HomeMy WebLinkAbout2016-09-27 Response - 2016-06-09 Traffic Analysis from Kimley Horn Kimley>>>Horn
MEMORANDUM
To: Lee Mann, P.E.
Stantec, Inc. (Serving as City Engineer of Oak Park Heights)
From: Douglas Arnold, P.E.
Kimley-Horn and Associates, Inc.
Date: June 9, 2016
Re: Proposed Retail Development—SW Corner of 60th Street N & Krueger Lane
Traffic Analysis
Oak Park Heights, Minnesota
Introduction
The Driessen Group is proposing to redevelop a property at the southwest corner of 60th Street North
and Krueger Lane in Oak Park Heights, Minnesota. The total site area is just under 8 acres and is
currently undeveloped.The proposed development includes three lots with building area totaling 33,200
square feet.
A traffic letter has been requested by Washington County staff and will be included as part of a MnDOT
Access Permit. The purpose of this traffic letter is to provide existing conditions of surrounding
roadways, discuss site trip generation, distribution and assignment, and determine the need for a
dedicated right-turn lane at the proposed project driveways.
Existing Conditions
Krueger Lane is an existing north-south three-lane undivided roadway (two through lanes and center
turn lane)that is adjacent to the proposed development to the east. The posted speed limit is 30 mph.
60th Street North is an existing east-west three-lane undivided roadway(two through lanes and center
turn lane)that is adjacent to the proposed development to the north.The posted speed limit is 40 mph.
The existing AADT (average annual daily traffic) for Year 2015 was obtained from MnDOT Traffic
Forecasting for the surrounding roadways near the proposed development including Stillwater
Boulevard and TH 36. Stillwater Boulevard, south of TH 36, is 22,800 vehicles per day and Stillwater
Boulevard north of TH 36 is 20,700 vehicles per day. TH 36 east of TH5 is 29,000 vehicles per day.
Existing traffic counts on 60th Avenue and Kruger Lane were not readily available.
Exhibit 1 (attached) provides the proposed site location and a summary of existing AADT on the
surrounding roadways. This information was provided through MnDOT's Traffic Forecasting and
Analysis mapping application.
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Site Development Information
The development is anticipated to consist of three buildings; Lot 1 will contain a 6,000 square foot retail
building and Lot 3 will contain a 20,600 square foot retail building.At this time,the specific retail tenants
are not known, therefore general retail was assumed. Lot 2 will contain a 3,300 square foot fast food
restaurant with drive-thru and a 3,300 square foot high-turnover sit-down restaurant. Access to the
development will be provided by two full access driveways; one full access driveway on 60th Street
North and one full access driveway on Krueger Lane.
Trip generation for the development was calculated based on the Institute of Transportation Engineers
(ITE) Trip Generation, 9th Edition. ITE Land Use Code 826 (equation)was used for the retail portion of
the development in Lot 1 and Lot 3, because the specific type of retail use is unknown at this time. Land
Use Code 820 provides trip generation rates for general retail; however, the average sample size is
376,000 square feet, whereas the average sample size for Land Use 826 is 69,000 square feet. ITE
Land Use Codes 932 and 934(rate)were used for the two restaurants in Lot 2.
There is internal access between the land uses so an internal capture reduction of 20%was applied to
the external trip generation. Table 1 provides the trip generation for the proposed development. The
site is anticipated to generate 181 PM peak hour trips. The AM peak hour was not reviewed for this
study because retail is not typically open for business during the AM peak hour of the adjacent street.
A pass-by reduction was not applied for the restaurants as the existing roadway volumes along 60th
Street North and Krueger Lane are anticipated to be low.
Table 1 -Trip Generation Analysis
PM Peak Hour
Land Use Description ITE Intensity/Units
In Out Total
Specialty Retail Center 826 26,600 Sq.Ft 38 47 85
High-Turnover(Sit-Down) Restaurant 932 3,300 Sq.Ft 20 13 33
Fast-Food Restaurant w/D.T. 934 3,300 Sq.Ft 56 52 108
TOTAL NET NEW TRIPS 114 112 226
Internal Capture(20%) 23 22 45
TOTAL DRIVEWAY TRIPS 91 90 181
The estimated trip distribution of site generated traffic was based on ADT information and anticipated
travel patterns. Listed below are the assumed distributions.
• 25% east on 60th Street North
• 30%west on 60th Street North
• 20% east on 58th Street North
• 25%west on 58th Street North
kimley-horn.com 2550 University Avenue West, Suite 238N, St. Paul, MN 55114 651-645-4197
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Exhibit 2 (attached) shows the directional distribution of site generated trips. Exhibit 3 (attached)
shows the trip assignment of the site generated trips according the directional distribution.
Right Turn Lane Analysis
Based on the trip assignment, there is anticipated to be a peak hour volume of 27 for the eastbound
right turn movement on 60th Street North and a peak hour volume of 11 for the southbound right-turn
volume on Krueger Lane. Due to the low volume of right turn traffic, combined with the low volume of
advancing volume on 60th Street North and Krueger Lane, dedicated right-turn lanes are not
recommended. This is also consistent with other driveway access along the two roadways where
dedicated right-turn lanes are not provided.
Summary
The proposed development will consist of a 6,000 square foot specialty retail building, 3,300 high-
turnover sit-down restaurant, 3,300 fast food restraint with drive-thru and an additional 20,600 square
foot specialty retail. The proposed development includes two full access driveways; one on 60th Street
North and one on Krueger Lane. The anticipated trip generation of the development is 181 vehicles
during the PM peak hour. Due to the multiple access points and traffic being spread out in multiple
directions of arrival and departure, the site is not anticipated to have a significant impact on the
surrounding roadways and intersections. Additionally, right-turn lanes are not recommended at either
driveway to the site.
Feel free to contact me if you have any questions or comments via email doug.arnold(a_kimlev-
horn.com or by phone at 651-643-0466.
Sincerely,
Dom, .
Douglas Arnold, P.E.
kimley-horn.com 2550 University Avenue West, Suite 238N, St. Paul, MN 55114 651-645-4197
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