HomeMy WebLinkAbout2003-07-07 BRAA Memo Re Bridge Plan ReviewBonestroo
Memo 0 Rosene
Anderf ik &
Associates
Engineers & Architects
To: Dennis Postler
Date: 717103
From: Gary Morien
Re: Bridge Plan Review - Mclean Square, oak Park Heights
Dennis,
At your request I reviewed the Con Span bridge plans for McKean Square. This type of bridge system is
a good choice for this application. All materials are concrete which should provide a long lasting and
durable bridge. The stone facing planned for exposed wingwall and headwall faces should afford a nice
attractive appearance. My comments are:
1. Bridge plans should be stamped and sealed by a registered Professional Engineer, Licensed in the
State of Minnesota.
2. Soil exploration was conducted for the overall project site and geotechnical report prepared by Twin
City Testing ( #032374). The report does not specifically reference soil conditions at the bridge and
snake recommendations as to the type of foundation for the bridge. Plan assumes 4000 PSF bearing and
requires verification.
3. The design data shown on the bridge plans states HS20 design live load. Public bridges in Minnesota
are designed for HS25 loading.
4. Safety rails or barriers should be provided at the top of the bridge headwall and wingwalls in all areas
with greater than 18" drop. Areas designated as pedestrian use are at least 42" high and areas designated
as bicycle use are at least 54" high (measured from finished grade). openings between rail members
should be arranged in such a way as to meet current building codes.
5. Bridge plans show flow line (and top of footing) at elevation 929. Grading plans show the NWL at
931 and the flow line (pond bottom) closer to 926/927. What does the 929 elevation correspond to?
Bonestroo, Rosene, Anderlik and Associates, Inc.
2335 West Highway 36 ■ St. Paul, MN 55113 ■ Phone: 651 - 636 -4600 ® Fax: 651 -636 -1311
Julie Hultman
From: Postler, Dennis M dpostler a@bonestroo.com]
Sent: Tuesday, July 08, 2003 2:34 PM
To: Todd A. Erickson (E -mail)
Cc: Eric A. Johnson; Jay Johnson; Jim Butler; Julie Hultman; Pawelsky, Leo M; Erickson, Karen S
Subject: McKean Square - Bridge Plans
.... .......... �
W I
McKean Square
ridge Review Me...
Todd:
We have reviewed the preliminary Conspan Bridge plans we received at last week's site meeting and have the following
comments (see attached, internal 717103 memo from Gary Morien of our Structural Group). Please (have Julian M.
Johnson construction Corp.) address the five comments in that memo, in addition to any comments you may have, and
resubmit for approval. Thanks.
<< McKean Square Bridge Review Memo - GWM_7 -7 -03. doc»
Dennis M. Postler
Bonestroo, Rosene, Anderlik & Associates
2335 West Highway 36, St. Paul, M N 55113
Direct: (651) 604 -4815
Office: (651) 636 -4600, x4815
Fax: (651) 636 -1311
Cellular: (612) 865 -9187
E-mail: dpostler@bonestroo.com