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HomeMy WebLinkAboutComprehensive Street Plan Sept 1993x ' j o eights minnesota Comprehensive street Plan Oak Park Heights Minnesota ( ---� --!) eptember 199 File No. 55111 r �r / F U �� d Sonestroo Rosene Anderlik & Associates Engineers & Architects September 3, 1993 OW G. 8onesi= PE. H ,V A Santo PE. Agnes M. Rog, AJC.P Roam W Rowse. PE • K dm A Gaaon. PE PNap J. ".. PE. Joseph C. An M& PE. fi D n R. P *. PE. Thomas W. Petehaas PE. Md. L Spr ". P.E RkharC W Fosse. FE. kakhael C. Lynch. PE. RXPJM E. Tumor. PE. Diva a W"a. PE. James R. Mahal. PE. Gd R. Cook PE. Rotsert C. Russek AJA. Jerry D P e h. PE. mamas E. Nayea PE. Jerry A Bouaon. PE. Scan 1 Aganek PE. Robert G. khun i, PE. Mart A. Hanson. P.E. Kenneth P AMa . PE. Susan M. EDemn. CPA. Mahal T. Rautlnann. PE. Mark R. RoRS PE. 1 5e,i x Cwssukam Teo K. Flea. PE. Mark A. kip PE. Thomas R. AnEenon. ALA. Gary W Menem, PE. Dmaa C. Burga^JL PE. Daniel 1 ECgenan. PE, Thomas E. Angus PE, A.R0 5avnaL PE. Ismael Mamma, PE. Philp J. Camas. PE. MicNel P Rau. PE. Mart D WdU PE. Honorable Mayor and City Council City of Oak Park Heights P.O. Box 2007 Stillwater, MN 55082 Re: Draft Comprehensive Street Plan Our File No. 55111 Dear Mayor and Council: Mks 8. Janes. PE, L. Phllp Gael. PE. Kaien L. Wanes, PE. Gary D I4� PE. F Toap Fo PE. Ke'M R. yap, PE. Douglas 1 siro P.E. Sown D. Comb PE. Cecaa Owe.. PE. Pail G. Heuer PE. J P. Gamer. P.E. Chafes A. EMk Leo M. PaweWy Hafts M. aeon James F Enge ,,js In accordance with your authorization, we are pleased to submit the Draft Comprehensive Street Plan for the City of Oak Park Heights. This plan addresses the needs for rehabilitating the older streets in Oak Park Heights. The primary purpose of this plan is to provide the City Council and its staff with a planning tool to assist them in discussing street rehabilitation projects with its residents. The plan discusses street rehabilitation, cost estimates, assessments and a recommended capital improvement program for 1994. Please feel free to contact us at your convenience to discuss any portion of this plan. Yours very truly, BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC. Mark A. Hanson R. Encl. r ' OAK PARK HEIGHTS COMPREHENSIVE STREET PLAN TABLE OF CONTENTS Page No. EXECUTIVE SUMMARY 1 INTRODUCTION 3 Street Life Cycle 3 Figure No. 1 Street Life Cycle 4 Figure No. 2 Seal Coat Projects 5 EXISTING CONDITIONS 6 Street Areas/Conditions 6 Figure No. 3 Street Areas 7 Evaluation 9 Figure No. 4 Pavemnet Condition Index 10 PROPOSED IMPROVEMENTS 11 Street 11 Figure No. 5 Typical Street Sections 12 Storm Sewer 13 Figure No. 6 Storm Sewer Extensions - Area A 14 Utility Repairs 13 COST ESTIMATE 15 ASSESSMENTS 17 REVENUE 20 55111\comp.rpt Page No. STREET PROJECT - 1994 22 Figure No. 7 Street Project 1994 23 APPENDIX A Deflection Testing Analysis /Core Samples 24 APPENDIX B Cost Estimate APPENDIX C Properties in Area A APPENDIX D Sample Notice for Area A 26 29 31 55111 \comp.rpt 0 EXECUTIVE SUMMARY In May 1993 the City of Oak Park Heights authorized the preparation of a Comprehensive Street Plan to develop a street rehabilitation program for its older streets. The plan identifies the pavement condition for each street and at what point in a street's life is the most cost effective maintenance. The Comprehensive Street Plan proposes a street reconstruction project for the streets in Area A, as presented on Figure No. 7 (Area A includes 296 parcels). It also recommends the streets in Areas B and C be reviewed further in 1995 to develop a program for rehabilitating these streets. Listed below is the estimated cost to completely reconstruct the 9.16 miles of streets reviewed in this plan and the City's cost based on the assessment policy presented in this plan. In the event certain streets are not totally reconstructed, the total cost and the estimated cost to the City may be reduced. Length City Cost Areas A -E 9.16 miles $2,371,768 Amount Assessed $1,939,662 Total % Assessed $4,311,430 45.0% The proposed assessments are based on a front foot basis, assuming a 75' minimum and 90' maximum assessable footage to residential property where new concrete curbs are constructed and existing concrete curbs are repaired. The assessments to residential property are summarized below. New Concrete Curb (remove existing bituminous curb) 75' minimum $2,250.00/lot 55111 \comp.rpt $2,700.00/lot 1 Existing Concrete Curb (repair only deteriorated curbs) 75' minimum ". IT, To M $1,237.50/lot $1,485.00/lot The street project proposed in 1994 is presented on Figure No. 7 and its cost is summarized below: Length Year miles Proiect Cost 1994 3.18 $1,795,350 City Cost $1,089,119 % Assessed 39.3% The Comprehensive Street Plan also suggests the City has different options how it elects to rehabilitate its streets, because many of its streets have not deteriorated to a point where total reconstruction is required. However, the streets recommended for consideration in 1994 are proposed to be reconstructed. The streets included in future projects may not require total reconstruction and should be reviewed further. It's recommended the City conduct an informational meeting with the residents in Area A, presenting the Draft Comprehensive Street Plan and the project being considered for 1994. If the City Council is comfortable with the results of the informational meeting, the preparation of a feasibility report would be authorized in conjunction with the required formal public hearings. Appendix C identifies the properties in Area A impacted by the project proposed in 1994. Appendix D presents a proposed sample notice to be sent to the properties in Area A notifying them of the informational meeting. 551111comp.rpt 2 INTRODUCTION STREET LIFE CYCLE The City of Oak Park Heights, similar to other communities with local streets approaching the end of their useful life, must consider other programs to maintain its streets, other than routine seal coats. Figure No. 1 identifies the life cycle of a typical street and the required maintenance based on its condition. As noted in the early years of a street's life, crack repair /seal coat is the recommended maintenance. The City of Oak Park Heights has routinely seal coated its streets every 5 -7 years. Figure No. 2 identifies the more recent seal coat projects since 1987 and the recommended seal coat project for 1993. The recommended interval between seal coat applications is 4 -8 years. ' As noted on Figure No. 1, as the pavement condition begins to deteriorate and streets become older, seal coat applications are no longer recommended as the most cost effective maintenance. In addition, a street's condition will deteriorate 40 %n during the first 75% of its life, while the next 12% of its life it will deteriorate another 40 %. Therefore, a street's condition will deteriorate quite quickly beyond 75% of its life. When a street approaches this point, City officials and staff are expected to make difficult decisions how to maintain their streets. Basically, three maintenance programs can be considered for maintaining public streets. Each program is listed below, noting at what point in a street's life each maintenance program should be considered, and its estimated cost per square yard. 5511 hcomp.rpt 3 9 NUMBER VERBAL CONDITION RATI RATING GROUPING 100 -------- __ - 1 Excellent 90 Pavements that have little or 8 no distress. ^ Very Good 70 _O F-- p 60 Good Z O U 50 Z W Fair M > 40 Q D Poor NEI 20 Very Poor 10 O Failed 3 T YPICAL - MAINTENANC E NUMBER R Typical Street Life Pavements that have a significant level of distress. non —load related. Pavements that have a significant level of distress. load related. Pavements that have major distress. Pavements that have significant amounts of major distress. 115 (YEARS) Seal Coat ($0.45 — $0.80) (50 -100) \ 1 Overlay ($2.00 — $7.00) (30 -60� \ Reconstruction $9.00— $15.00) (0-40) \ 20 25 STREET LIFE CYCLE' Boneatroo 0 Posene OAK PARK HEIGHTS, MINNESOTA FIGURE 1 A t s As socisoci ates COMPREHENSIVE STREET PLAN K: \55 \55111 \55111F01 JULY 1993 COMM. 55111 N i 0 7w 500 SEAL COAT PROJECTS (1987 -1993) OAK PARK HEIGHTS, MINNESOTA FIGURE 2 COMPREHENSIVE STREET PLAN K: \55 \55111 \55111F02 JULY 1993 COMM. 55111 Bonestroo A 0 Rosene Anderlik Q Associates Maintenance Crack Repair/Patch /Seal Coat Patch /Overlay Existing Surface Reconstruct Percent in Life Cycle to be Considered 0- 75% 60- 85% Estimated Cost Per Sq. Yd. $0.45 - $ 0.80 $2.00 -$7.00 $9.00 - $15.00 The estimated cost per square yard varies considerably, due to the amount of patching and drainage improvements that are being considered as part of each improvement. Typically, communities like Oak Park Heights will finance seal coat projects internally through their general fund. However, due to the cost of overlay and reconstruction type projects, it's difficult for cities to finance these types of projects internally. Therefore, additional revenue sources must be considered, which typically means assessing the abutting property. EXISTING CONDITIONS STREET AREAS /CONDITIONS For purposes of this report the older streets in Oak Park Heights have been divided into five areas (A -E), as shown on Figure No. 3. The area designations for the most part correspond with Oak Park Heights' Seal Coat Program. In addition, Areas A, D, and E have bituminous curb, while Areas B and C have concrete curb. General information pertaining to each area is listed below. 55111 \comp,rpt 6 N 1 S TREE T A OAK PARK HEIGHTS, MINNESOTA FIGURE 3 COMPREHENSIVE STREET PLAN K: \55 \55111 \55111F03 JULY 1993 COMM. 55111 Bones troo 0 Rosene Anderlik d Aaeociatea Last Seal Coated 1987 1987 1987, 1989 1989 Proposed 1992 Curb Twe Bituminous Concrete Concrete Bituminous Bituminous The condition of a street will vary for a number of reasons. A few of these reasons are listed below. Surface condition (amount of cracking) Drainage (street profile /cross- section/storm sewer) Street section (bituminous/gravel base thickness) Subgrade soil (sand, clay, silt) Amount/type of traffic - Age - Maintenance (sea] coat/patching) All of the above items contribute to whether a street will be in poor or good condition. In addition, it's not uncommon for streets in the same area and constructed at the same time to vary in condition, which makes it difficult to develop an efficient street rehabilitation program that will satisfy everyone. 1 55111 \comp.rpt 8 Length Age of Streets miles Years Area A 3.18 16 -26 Area B S 0.97 3 -15 Area C 0.37 10 -18 Are 2.27 26 Lc- Area E Z3Z J, O 26 ([,owIr OQ 9.106' "" 4 Last Seal Coated 1987 1987 1987, 1989 1989 Proposed 1992 Curb Twe Bituminous Concrete Concrete Bituminous Bituminous The condition of a street will vary for a number of reasons. A few of these reasons are listed below. Surface condition (amount of cracking) Drainage (street profile /cross- section/storm sewer) Street section (bituminous/gravel base thickness) Subgrade soil (sand, clay, silt) Amount/type of traffic - Age - Maintenance (sea] coat/patching) All of the above items contribute to whether a street will be in poor or good condition. In addition, it's not uncommon for streets in the same area and constructed at the same time to vary in condition, which makes it difficult to develop an efficient street rehabilitation program that will satisfy everyone. 1 55111 \comp.rpt 8 EVALUATION The City of Oak Park Heights evaluated the condition of its streets in 1987. The 1987 study, for the most part, indicated the streets were in reasonably good condition, such that another seal coat application over the next 4 -8 years would be the most cost effective maintenance. As part of this plan a similar evaluation was done for the streets in Area A because these streets were last seal coated in 1987 and for the most part are in a poorer condition than streets in other areas. The results of that evaluation are presented on Figure No. 4. The pavement condition corresponds to the rankings which are presented on Figure No. 1 and summarized below: Maintenance Pavement Recommended Condition Seal Coat 50- 100 Overlay 30- 60 Reconstruct 0- 40 In addition to the pavement condition evaluation, a deflection testing analysis and core samples were taken in each roadway and are presented in Appendix A. The results of each analysis indicate the streets in Area A are beginning to approach a time in their life where a seal coat application is not the most cost effective maintenance. The street conditions in Areas B, C, D and E are also deteriorating, but not to the extent they appear to be in Area A. The pavement condition for these areas was completed in 1987. It's recommended a similar evaluation be done for these areas before their next seal coat application is considered. 55111\comp.rpt 9 _ s OSGOOD AVE. N Co. Rd. 67 N OR�N AVE. 51 6 Z OMAR AVE. N to w z s 71` OMAHA AVE. H OLENE AVE. N 9 Z v 4 66 AVE. N LO OLINDA I U-Ji- Z 31 z OLDFIELD OLDFIELD AVE. N V) � AVE. N U) O'BRIEN AVE. N 5Q Pci - z ® sw. H r..t P A V EMENT CONDITION INDEX Boneatroo 0 Rosene OAK PARK HEIGHTS, MINNESOTA FIGURE 4 A t s Associ asocfes COMPREHENSIVE STREET PLAN K: \55 \55111 \55111F04 JULY 1993 COMM. 55111 STREET Various street improvements can be considered when a seal coat application is no longer cost effective. Each improvement is discussed below. -- Mill, patch and overlay existing bituminous surface if existing street condition will accept an overlay. Specific areas may have to be reconstructed; however, it's not expected these areas will be more than 25% of the total street surface area. -- Remove existing bituminous surface and upgrade existing gravel base where required. Construct a new bituminous surface over existing gravel base. -- Remove existing bituminous surface and gravel base. Construct new gravel base and bituminous surface to required thickness. Figure No. 5 presents each typical section for each street improvement. It should be noted the cost for each improvement is substantially higher when more patching and reconstruction is done. In addition, on streets with bituminous curbs in Areas A, D and E, it's recommended the bituminous curbs be removed and new B618 concrete curb and gutter be constructed. If a B6 bituminous curb exists, it is feasible to construct a B618 concrete curb and gutter adjacent to the existing bituminous surface and match the existing boulevard grades, allowing a new bituminous overlay to be constructed over the existing bituminous surface. If this construction is considered, it will have to be reviewed further during the preparation of the feasibility report. For streets with existing concrete curbs it's recommended only the curbs in disrepair be removed and replaced. 55111 \comp.rpt 11 Variable Variable Existing Concrete Curb and Gutter 0.02' /ft. 0.02' /ft. PATCH AREA Type 41 Bituminous Wear Course Type 31 Bituminous Base Course Aggregate Base Course MILLED AREA CL Variable Variable Existing Concrete Curb and Gutter 0.02' /ft. 0.02' /ft. Type 41 Bituminous Wear Course Type 31 Bituminous Base Course Ex. Aggregate Base REMOVE EXIST. BITUMINOUS SURFACE, CONSTRUCT NEW BITUMINOUS SURFACE OVER Ex. GRAVEL BASE CL NEW CONCRETE CURB & GUTTER Variable Variable Existing Bituminous Curb (REMOVAL RECOMMENDED) 0.02' /ft. 0.02' /ft. Type 41 Bituminous Wear Course Type 31 Bituminous Base Course — Aggregate Base Course REMOVE EXIST. BIT. AND GRAVEL SURFACE CONSTRUCT NEW BIT. AND GRAVEL SURFACE TYPICAL STREET SECTIONS M Sonestroo 0 Rosene OAK PARK HEIGHTS, MINNESOTA FIGURE 5 Anderlik 6 Associates COMPREHENSIVE STREET PLAN K: \55 \55111 \55111F05 JULY 1993 COMM. 55111 STORM SEWER When street improvements are being considered, it's also necessary to review the existing storm sewer system. The design standards for storm sewer construction have improved since many of the streets and storm sewers were constructed in Oak Park Heights. Presently it's recommended the upstream drainage area from the end of the s torm sewe sy stem not be larger than 3 -5 acre, In the case of the existing storm sewers in Area A, many of the ups tream drainage areas are larger than 10 acres. The benefit of extending storm sewer is to reduce the amount of storm water runoff being conveyed down a street's surface and improve intersection drainage. Figure No. 6 shows the proposed storm sewer extensions in Area A. A brief review of Areas B, C, D and E indicates additional storm extension won't be required to the extent they are proposed in Area A. However, a more detailed review is recommended during preparation of the feasibility reports for these areas. In addition to storm sewer extensions, draintile construction may be required in isolated areas to properly drain the subgrade soil. It's also recommended the discharge of sump pumps into streets and backyard drainage problems be reviewed to determine if additional storm sewer extensions are required. UTILITY REPAIRS When overlay and reconstruction type projects are considered for an area, it's also recommended the existing sanitary sewer and water main system be reviewed. Typically, sanitary sewers will be televised and the history of water main breaks will be reviewed. After this review, if repairs /upgrades are required, it's recommended they be done as part of the street improvement project. 551111camp.rpt 13 C ��\ I 61 91 c 6 1 st L ST. N S CT. Ex. 36' STORM SEWER Wor 10 1010 a a a a a a a a a am a 0 a a a am 0 ■olp STATE T.H. 36 L; PROPOSED z i STORM SEWER z Li cn w w z z z 0 Lj z 0 V) �z Q z PROPOSED L) 58th w z N fX ST. w z 57th ST. STORM SEWER L'i N. z 0 56th ST, N, I I 0 56th ST. N. 57th bl- N • X. 36" STORM SEti OLDFIELD 3" STORM SEWER ST. N COURT z m < Li 56th ST. N. z o¢ PROPOSED 0 55th — ST. N I a Ex. STORM SEWER STORM SEWER donne ■ ■ I � � ■ z ■ Z:) O 0 0 0 300 Scot In feat STORM SEWER EXTENSIONS (AREA A) Sonestroo Rosene d OAK PARK HEIGHTS, MINNESOTA FIGURE 6 Aesocla Anderilk tes COMPREHENSIVE STREET PLAN K.\55\55111\55111FO6 JULY 1993 COMM. 55111 COST ESTIMATE The costs associated with street rehabilitation will vary, depending upon the construction. The costs to remove and reconstruct the existing bituminous and gravel base surfaces will obviously be much greater than milling, patching, and constructing a bituminous overlay. In addition, streets with bituminous curbs where it's recommended they be removed and reconstructed with new concrete curbs will be much greater than areas which have existing concrete curbs and only the curbs in need of repair are removed and reconstructed. The pavement condition will determine if patch and overlay is feasible. Therefore, for purposes of this report, the estimated cost for lineal foot of street rehabilitation is separated into streets with existing bituminous curbs and existing concrete curbs. The cost for street repair between the curbs is separated into streets requiring mill, patch, overlay and streets requiring total reconstruction. Estimated costs for mill, patch, overlay assume 5% of the existing concrete curbs and 15% of the existing bituminous surface, including gravel base, will be removed and reconstructed. A detailed cost estimate for each construction is presented in Appendix B and summarized below: Areas with Existing Bituminous Curb (remove /reconstruct concrete curb) Street New Concrete Curb Reconstruct $54.00/L.F. $36.00/L.F. Mill, Patch, Overlay $33.00/L.F. $36.00/L.F. Areas with Existing Concrete Curb (remove /repair only bad curbs) Street (includes 5% curb repair) Reconstruct $44.00/L.F. Mill, Patch, Overlay $33.00/L.F. Total $90.00/L.F. $69.00/L.F. 55111 \comp.rpt 15 In addition to the above costs for street, storm sewer costs also need to be determined. t Storm sewer costs are estimated at $60/lineal foot for the lineal feet of main storm sewer line constructed, which includes manholes, catch basins, catch basin leads and drain tile. It should be noted the above cost estimates per lineal foot include 10% contingencies and 30% indirect costs, which include legal, engineering, administrative, construction interest, and all miscellaneous costs not directly related to construction. The estimated project cost for Areas A -E, assuming total street reconstruction and new concrete curb in Areas A, D and E, is listed below: Street Length �1 i Area a F.) �tre A 810 Area C 1,960 STREET RECONSTRUCTION cy ( s b t r STREET STORM SEWER Total Rate/ Total Lineal Rate/ Storm 72 L.F. . Street Feet L.F. Sewer Total /O $90.00 $1,513,350 4,700 $60.00 $282,000 $1,795350 ( , l , ( ' , � v t e r A t o aW x8o 44.00 224,840 - - ' 224,840 44.00 86,240 - -- - -- - -- 86,240 Area D 12,000 90.00 1,080,000 - -- - -- - -- 1,080,000 Area E 12 5,2 C' 90.00 t l 8/ 06, C)- - -- - -- 1.125.000 Total 48,385 $4,311,430 As noted, s torm sewer extensions are not included in Areas B -E. Wh Areas B -E are considered for street improvements in the future, storm sewer extensions will have to be reviewed at that time. The total estimated project cost is approximately $4,300,000, which assumes no storm sewer extensions in Areas B -E, new concrete curb and gutter construction in Areas A, D, and E, and total street reconstruction in all areas. In the event the City 55111 \comp.rpt 16 elects to mill, patch, overlay those streets where the pavement condition is greater than 40, the project cost will be less, and is listed below. STREET MILL, PATCH, OVERLAY As noted, the project cost is about 20% less (approximately $900,000 for 9.16 miles) if street rehabilitation includes mill, patch, overlay as opposed to total reconstruction. However, in the event the patching effort is more than 15 % of the total street surface area, the cost difference will be less. The cost for utility repairs (sanitary sewer, water main) is not included and will have to be considered at the time each street project is developed. Street improvement projects, whether new or reconstruction, are typically assessed in part to the abutting property. These costs are typically assessed on a front foot basis. The City of Oak Park Heights needs to develop a policy for assessing street reconstruction type projects. The purpose of this Comprehensive Street Plan is to present a proposed 551111comp.rpt 17 STREET STORM SEWER Street Total Length Rate/ Total Lineal Rate/ Storm Area (L_F.) L.F. . Street Feet L.F. Sewer Total Area A 3,200 $90.00 $288,000 2,100 $60.00 $126,000 $414,000 13,615 69.00 939,435 2,600 60 156,000 1,095,435 Area B 5,110 33.00 168,630 - -- 168,630 Area C 1,960 33.00 64,680 - -- 64,680 Area D 12,000 69.00 828,000 - -- 828,000 Area E 12,500 69.00 862,500 - -- 862.500 Total 48,385 $3,433,245 As noted, the project cost is about 20% less (approximately $900,000 for 9.16 miles) if street rehabilitation includes mill, patch, overlay as opposed to total reconstruction. However, in the event the patching effort is more than 15 % of the total street surface area, the cost difference will be less. The cost for utility repairs (sanitary sewer, water main) is not included and will have to be considered at the time each street project is developed. Street improvement projects, whether new or reconstruction, are typically assessed in part to the abutting property. These costs are typically assessed on a front foot basis. The City of Oak Park Heights needs to develop a policy for assessing street reconstruction type projects. The purpose of this Comprehensive Street Plan is to present a proposed 551111comp.rpt 17 assessment policy which can be developed in more detail beyond the scope of this report and adopted by the City Council in accordance with its requirements. It's recommended the City assess property abutting street reconstruction projects on a front =foot in accordance with the rates established in this Comprehensive Street Plan. For areas with eadsting bituminous curb it's recommended 75% of the new concrete curb rate be assessed to residential property (75% of $18/FF = $13.50/FF), while 100% of the rate for mill, patch, overlay be assessed for the street portion (100% of $16.50/FF). For areas with existing concrete curb it's also recommended 100% of the rate for mill, patch, overlay be assessed for the street portion. The intent in assessing only 75% of the concrete, curb rate is that the itv nr .fers concrete cu construction over bitum curb. Therefore, having the C p artic ip at e in its cost will encourage the_ property_owners to ac cept the concrete cur construction over bituminous curb. The intent in assessing 100% I of the mill, patch, overlay rate is that the City will ?t .uume--any_additisLAal cost or J reconstruction above the overlay — YA,% Therefore, if the City prefers reconstruction, it will assume the additional cost for reconstruction versus overlay. In a if the prope owner feels, based on a street's pavement condition, that only an overlay is required and the City prefers reconstruction, t p roperty o will not be responsible for the additio cost associated with reconstructi It's reco residential property be assessed a minimum 75 fro feet (F.F.) an d a maximum 90 F.F. on its short side regardless of sideyards or backyards. Listed below is the assessment range for residential property for areas where new concrete curb is constructed and areas where concrete curb already exists. 551111comp.ipt 18 New Concrete Curb Residential Min. 75' FF Residential Max. 90' FF Existing Concrete Curb Residential Min. 75' FF Residential Max. 90' FF Curb Rate Mill /Patch /Overlay Total 75% Total 100% Total Rate $13.50/FF $16.50/FF $30.00/FF 13.50/FF 16.50/FF Mill/Patch /Overlay 100% Total $16.50 16.50 30.00/FF Total Assessment $2,250 2,700 Total Assessment $1,237.50 1,485.00 It's also recommended multiple density property be assessed similar to residential property. Listed below is a suggested front foot amount for each unit based on property type and the estimated percentage of value compared to residential property. Duplex (80 % of 75 FF) Townhomes - Less than 12 units (60% of 75 FF) Apartments - More than 12 units (40% of 75 FF) 30 FF It's recommended all other property (commercial, industrial, school, and City [park and other]) be assessed the full rate, based on the construction incurred. It's also recommended these properties be assessed for their entire frontage abutting the street project. However, if commercial/industrial properties have minimal frontage abutting a street project, it may be appropriate to assess on a per lot basis or based on assessed valuation. In the case of storm sewer extensions and repa /upg rades to the existing storm sewer system, it's recommended these costs not be assessed. It's also recommended repa to the FF nit 60 FF 45 FF 55111\comp.rpt 19 sanitary sewer and water main system not be assessed, unless it's felt a benefit or upgrade results to the abutting property. REVENUE The project costs will be financed in part through special assessments. However, the estimated assessments presented herein will not finance the cost of the entire project. Therefore, the City will have to finance a portion of each project We have estimated the City's financial responsibility for Street Reconstruction and Mill, Patch, Overlay projects for each area, which is summarized in the following tables. It's assumed, for purposes of the Comprehensive Street Plan, only 70% of the total front footage for each area, which includes residential property, is assessable. Non - assessable footage includes front footage abutting intersections and lots with front yards, including sideyards, having more than 90' of front footage. In addition, we have attempted to estimate front footage where property other than single and multi -family exists to estimate the City's responsibility. STREET RECONSTRUCTION Area Curb Area A $287,540 Area B --- Area_C - -- Area D 205,200 Area E 213,750 Totals 55111 \compapt CITY COST Storm Street Sewer $519,428 $282,000 106,800 - -- -0- - -- 370,800 386,250 1 City Total $1,088,968 106,800 -0- 576,000 600.000 $2,371,768 20 D 9` Amount Assessed $706,362 118,040 86,240 504,000 525,000 $1,939,662 Total $1,795,350 l 224,840 86,240 1:1 111 1.125.000 $4,311,430 % Assessed 39.3% 52.5% 100.0% 46.7% 46.7% 45.0% STREET MILL, PATCH, OVERLAY As noted, the amount assessed for Street Reconstruction and Street Mill, Patch, Overlay is approximately the same ($1,900,000), because it's not intended to assess more than the mill, patch, overlay rate. It should also be noted Area C, which for the most part includes commercial/industrial property, is proposed to be assessed the full project cost. The difference between the City's cost for Street Reconstruction and Street Mill, Patch, Overlay, is approximately $900,000 for 9.16 miles of street. The additional cost for street reconstruction is approximately $98,000 /mile versus a mill, patch, overlay project, assuming the street is in a condition that will accept an overlay. 55111 \comp.rpt 21 CITY COST Storm City Amount Area Curb Street Sewer Total Assessed Total % Assessed Area A $287,535 $233,670 $282,000 $803,205 $706,230 $1,509,435 46.8% Area B - -- 50,590 - -- 50,590 118,040 168,630 70.0 % Area C - -- - -- - -- - -- 64,680 64,680 100.0% Area D 205,200 118,800 - -- 324,000 504,000 828,000 60.0% Area E 213,750 123,750 - -- 337.500 525.000 862,500 60.0% Totals $1,515,295 $1,917,950 $3,433,245 55.9% As noted, the amount assessed for Street Reconstruction and Street Mill, Patch, Overlay is approximately the same ($1,900,000), because it's not intended to assess more than the mill, patch, overlay rate. It should also be noted Area C, which for the most part includes commercial/industrial property, is proposed to be assessed the full project cost. The difference between the City's cost for Street Reconstruction and Street Mill, Patch, Overlay, is approximately $900,000 for 9.16 miles of street. The additional cost for street reconstruction is approximately $98,000 /mile versus a mill, patch, overlay project, assuming the street is in a condition that will accept an overlay. 55111 \comp.rpt 21 STREET PROJECT - 1994 It's recommended each street project be developed based on the condition of the street. Figure No. 7 identifies a proposed project in 1994. The street project for 1994 is summarized below and assumes complete street reconstruction. In the event portions of the existing gravel base can be maintained, the City cost will be reduced. Street Length Amount Year (L.F.) Proiect Cost Assessed City Cost 1994 16,815 $1,795.350 $706,231 $1,089,111 % Assessed 39.3% 551111comp.rpt 22 -5 Lm .e 7 z w W Y O V` Z W_ m 41 0¢ COURT 57th ST. 61st 61st ST. N ST. CT. 60th ST. N D STATE T.H. 36 w a x a 0 z 56th ST. S7. N o f i + N C� a 3 Swle in leer z Z z W ^ w w w ¢ a .� z v w U w Z W_ m 41 0¢ COURT 57th ST. 61st 61st ST. N ST. CT. 60th ST. N D STATE T.H. 36 w a x a 0 z 56th ST. S7. N o f i + N C� a 3 Swle in leer W z w 0 0 0 0 1994 PROPOSED STREET PROJECT Eone ® Rose A OAK PARK HEIGHTS, MINNESOTA FIGURE 7 s Associ k ates COMPREHENSIVE STREET PLAN K: \55 \55111 \55111F07 JULY 1993 COMM. 55111 SR1n CT 56th ST. I z W ^ a m .� z v J O U W z w 0 0 0 0 1994 PROPOSED STREET PROJECT Eone ® Rose A OAK PARK HEIGHTS, MINNESOTA FIGURE 7 s Associ k ates COMPREHENSIVE STREET PLAN K: \55 \55111 \55111F07 JULY 1993 COMM. 55111 SR1n CT 56th ST. I x H Q z w a a N C 0 C n Lv u J "r :J :J C 1 1 a �W o� A 0 N C O V d u r u 0 u A N E N N � N C N Y ' u H L C � Y C U O L •" U � = o � Z A d d 6 U d v v a s > o� u � d> u o i L s U W i . A A u � � a d � u '.00J •� � o` r rn rn o+ oo a c� o. o, oo a t c o. rn a V cn U 3 7 P O r N N CN M O N O O O N N C, O M r - — •� - N a _• C 10 y� F ` � N V'i I� N N � N N (� ° M � CD . a U A En .Y A O a � A W Sr W _ L c Ltl p •_ n ti L c o E cn c� ,n W O > > > > > t y O O O ¢ O O O t t Q Q Q O > > b b C • �7. Vl > G Q G in in h ti `v .. u u in OD Od N a u V u L L L L L L G 6 cu 0 0 0 0 0 0 n n o O n v O VI CA U a fn �. �• �- H In cn v v c E c v'ni c v h v O O O O 0 O C 1 1 a �W o� A 0 N C O V d u r u 0 u A N E N N � N C N Y ' u H L C � Y C U O L •" U � = o � Z Soil Sampling Results for Oak Park Heights Road Terntini Bit. Thickness (inches) Base Thickness (inches) Subgrade Soil 55th St 1750' W of E end of pvmt 6 10 Gravelly SC Upper 55th St 250' E of Osgood Av 2 3/4 8 Gravelly SC 56th St 250' W of Oldfield Av 3 8 Gravelly SC Upper 56th St 500' W of Osgood Av 5 8 Gravelly SP -SM Upper 56th Ct No core taken 5* 57th St 950' W of Oren Ave 3 10 Gravelly SM 58th St 125' W of Olene Av 3 1/2 9 SM w/ Gravel 59th St 200' W of Olene Av 3 10 SM w/ Gravel O'Brian Av 615' S of 57th St 6 10 Gravelly SC Oldfield Av 700'S of 57th St 7 10 Gravelly Sr- Oldfield Av 490' S of 60th St 3 5 SM w/ Gravel Oldfield Ct 250' W of Oldfield Av 6 10 Gravelly SC Olene Av 500' S of 60th St 3 1/2 10 Obstruction Olinda Av 250' S of 59th St 3 1/4 9 SM w/ Gravel Omaha Av 500' S of 57th St 6 10 Gravelly SM Omar Av 225' S of Upper 56th St 6 10 Gravelly SM Oren Av No core taken 5* * Thickness assumed for analysis APPENDIX B COST ESTIMATE OAK PARK HEIGHTS COMPREHENSIVE STREET PLAN I. AREAS WITH EXISTING BITUMINOUS CURB A. Remove Existing/Construct New Concrete Curb uanti Item 2 LF B618 Concrete curb @ $6.00/LF 0.019 EA Driveway apron repair @ $500.00 EA 1.6 SY Boulevard sodding @ $2.00 /SY + 10% Contingencies + 30% Indirect Costs TOTAL B. Street - Reconstruct Q uanti1y Item Cost/Lineal Foot $12.00 9.50 3.20 $24.70 2.50 $27.20 8.80 $36.00 Cost/Lineal Foot 3.6 SY Remove bituminous @ $ 1.50 /SQ 1.3 TN Class 5 aggregate base (6" thick) @ $9.00/TN 0.75 TN Bituminous surface (3 thick) @ $24.00nN 0.006 EA Adjust structures @ $200.00 EA + 10% Contingencies + 30% Indirect Costs TOTAL $ 5.40 11.70 18.00 1.20 $36.30 3.70 $40.00 14.00 $54.00 55111\comp.rpt 26 C. Street - Mil]/Patch/Overlay uanti Item Cost/Lineal Foot 0.7 SY Remove bituminous @ $1.50 /SQ $ 1.05 0.20 TN Class 5 aggregate base @ $9.00/1N 1.80 0.173 TN Bituminous patch (estim. 15 %) @ A$40.00TIN 6.95 0.10 TN Bituminous leveling @ $25.00/IN 2.50 0.40 TN Bituminous wear course (2" thick) @ $24.00(IN 9.60 0.006 EA Adjust structures @ $200.00 EA 1.20 $23.10 + 10% Contingencies 2.30 $25.40 + 30% Indirect Costs 7.60 TOTAL $33.00 II. AREAS WITH EXISTING CONRETE CURB A. Street - Reconstruct uanti Item 0.1 LF Curb removal & replacement (estim. 5 %) @ $10.00/1-F 3.6 SY Remove bituminous @ $1.50 /SQ 0.572 TN Class 5 aggregate base @ $9.00r N 0.75 TN Bituminous surface (3 thick) @ $24.00frN 0.006 EA Adjust structures @ $200.00 EA + 10% Contingencies + 30 % Indirect Costs TOTAL Cost/Lineal Foot $ 1.00 5.40 5.15 18.00 1.20 $30.75 3.10 $33.85 10.15 55111 \comp.rpt 27 B. Street - Mill/Patch/Overlay Q uantity Item Cost/Lineal Foot 0.1 LF Curb removal & replacement (estm. 5 %) @ $10.00/1,17 $ 1.00 0.25 TN Class 5 aggregate base @ $9.00/TN 2.25 1.7 SY Mill @ $1.00 /SY 1.70 0.101 TN Bituminous patching (estim. 15 %) @ $40.00/TN 4.05 0.10 TN Bituminous leveling @ $25.00/TN 2.50 0.40 TN Bituminous wear course (2" thick) @ $24.00/1N 9.60 0.006 EA Adjust structures @ $200.00 EA 1.20 $23.10 + 10% Contingencies 2.30 $25.40 + 30% Indirect Costs 7.60 TOTAL $33.00 55111 \comp.rpt 28 APPENDIX C PROPERTIES IN AREA A OAK PARK HEIGHTS COMPREHENSIVE STREET PLAN PARCEL DESCRIPTION Swager Bros. 4th Addition St. Croix Mall P.U.D. Block 1 Lots 1 -7 Block 1 Lots 7, 8, 9, 10 Block 2 Lots 1 -7 Swager Bros. 5tb Addition Block 1 Lots 1 -12 Block 2 Lots 1 -7 Block 3 Lots 1 -7 Swager Bros. 6th Addition Block 1 Lots 1 -14 Block 2 Lots 1 -18 Block 3 Lots 1 -12 55111 \comp.rpt 29 Platted Parcels Alberts Addition Swager Bros. 7th Addition Block 1 Lots 1 -10 Block 1 Lots 1 -5 Block 2 Lots 1 -9 Block 2 Lots 1 -5 Block 3 Lots 1 -9 Swager Bros. Addition Block 4 Lots 1 -4 Block 1 Lots 1 -7 Block 2 Lots 1 -6 Swager Bros. 8th Addition Lots 1 -4 Swager Bros. 2nd Addition Block 1 Lots 1 -5 Brekke's Garden Hills Block 2 Lots 1 -19 Block 1 Lots 1 -21 Block 2 Lots 1 -10 Swager Bros. 3rd Addition Block 3 Lots 1 -6 Block 1 Lots 1 -12 Block 2 Lots 1 -2 Brekke Heights Block 3 Lots 1 -7 Block 1 Lots 1 -7 Block 4 Lots 1 -5 Block 2 Lots 1 -6 Swager Bros. 4th Addition St. Croix Mall P.U.D. Block 1 Lots 1 -7 Block 1 Lots 7, 8, 9, 10 Block 2 Lots 1 -7 Swager Bros. 5tb Addition Block 1 Lots 1 -12 Block 2 Lots 1 -7 Block 3 Lots 1 -7 Swager Bros. 6th Addition Block 1 Lots 1 -14 Block 2 Lots 1 -18 Block 3 Lots 1 -12 55111 \comp.rpt 29 Registered Land Survey (R.L.S.) N 1 /z Section 4 T 29 R 20 R.L.S. No. 19 Tract A, B, C, D, E, F, G, H, I, J R.L.S. No. 53 Tract A, B, C, E, G, H, I, J R.L.S. No. 70 Tract A R.L.S. No. 76 Tract A, B, C, D, E, F, G, H, I, J, K, L, M Tract E (parcel in southwest corner County Road 67 and Upper 56th Street N.) Unalatted Parcels North 1 /z Section 4 T 29 R 20 Parcel 2550, 2800, 2900 Parcel 3400, 3410, 3450, 3550, 3600, 3650, 3700, 3750, 3800, 3850, 3950, 4000, 4200 55111 \comp.rpt 30 APPENDIX D r OAK PARK HEIGHTS INFORMATIONAL MEETING EXISTING STREET CONDITION /IMPROVEMENTS PLACE: D ATE / TIME: Dear Oak Park Heights Property Owner In Area A: The City of Oak Park Heights has scheduled an informational meeting for the residents in Area A (shown below) to discuss the existing condition of your streets. The purpose of the informational meeting is to present information on the older streets in Oak Park Heights and streets in your neighborhood. Street improvements, their estimated cost, and proposed assessments to the benefitting property will also be discussed. After a short presentation, we welcome your input and will answer any questions. City Clerk, LaVonne Wilson 6th ST. N u STATE T.H. 36 x Lj z z a z W a � a a � � z 3 w 0 0 y AREA "A " z u U Q 0 ^. z z i w Z z : a W Q � O O C, 8t T. N. O N 0 57th ST• N. 56th ST. N. r n �o °,� 55th ST. N.