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Maintenance Center
17073 Adelmann Street S.E.
Prior Lake, Minnesota 55372
CITY COUNCIL WORKSHOP AGENDA REPORT
MEETING DATE: August 2, 2004
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PREPARED BY:
AGENDA ITEM:
DISCUSSION:
7/30/200<1
Bud Osmundson, Director of Public Works
COUNTY HIGHWAY 82 UNDERPASS
The County Highway 82 reconstruction from CH 21 to County Highway 1 7
is scheduled for 2005. T he consultant, T KDA, is n ow in the final design
phase of the project. We had previously contracted with TKDA to look into
the feasibility of constructing an underpass somewhere near the intersection
of CH 82 with Fremont and Wilds Parkway. Initially the construction cost
estimate was about $300,000. With the latest information available, this
estimate has now risen to $725,000.
The main reason for the huge increase is trying to meet State Aid and ADA
standards and the desire not to push the trail on the north side outside the
existing right of way and close to the houses. This drives up the need for
long retaining walls on both sides of the trail resulting in the huge price
increase. The trail on the north side is the "Regional Trail" and therefore
must be constructed to tight ADA specifications.
Staff feels that at this price that the underpass is not worth constructing. Our
recommendation is to work with the County staff on some other form of
pedestrian crossing in this area.
www.cityofpriorlake.com
Phone 952.440.9675 / Fax 952.440.9678
Bud Osmundson
From:
Sent:
To:
Cc:
Subject:
Brent D. Paulsen [paulsen.bd@tkda.com]
Friday, July 16, 2004 9:39 AM
Bud Osmundson; Steve Albrecht
IIkka, Gregory; Joseph M. Weaver
Comm#12946-01: Revised Underpass Estimate
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undrps_const_est_r
eV.xls (30 K...
Bud:
Attached is the revised construction cost estimate for the CSAH 82 pedestrian underpass.
The following criteria was followed to complete the preliminary design of the trail,
retaining walls, and underpass:
1. Based on your direction, we revised the trail alignment to minimize right-of-way
impacts. As a result, additional retaining wall is necessary.
2. The trails on the north and the south side of CSAH 82 will be designed to meet State
Aid rules and bikeway standards. If the trails were less than 8' wide, the design would
not have to meet the rules and standards, which would allow us to minimize trail and
retaining wall quantities. The south trail is currently 8' in width, based on your
direction, and will remain 8' wide. The north trail is 10' in width.
3. The State Aid rules require 10 feet of vertical clearance. The preliminary design of
the underpass includes a 12'x10' box culvert, which would meet the vertical clearance
requirements. However, a bituminous overlay is generally applied to the bottom of
underpasses to provide better ride quality and to protect the joints between the box
culvert sections. The addition of a bituminous overlay to the box culvert would result in
a vertical clearance less than the required 10'. A 12' high box would be necessary to
accommodate the vertical clearance requirements and a bituminous overlay. Based on Steve
Albrecht's direction, our preliminary design includes a 10' high box culvert without a
bituminous overlay.
Please review the above criteria and the attached construction cost estimate and provide
direction regarding TKDA revising the fee estimate associated with the underpass design.
Thank you.
The attached files are transmitted for your convenience and are the sole property of TKDA.
By accepting delivery the recipient agrees to indemnify and hold TKDA harmless from any
liability arising from the use of this data. By acceptance of this data, the user agrees
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Brent D. Paulsen, Professional Engineer
phone: 651/292-4602
fax: 651/292-0083
e-mail: paulsen.bd@tkda.com
TKDA
1500 Piper Jaffray Plaza
444 Cedar Street
Saint Paul, Minnesota 55101-2140
1
CITY OF PRIOR LAKE
PEDESTRIAN UNDERPASS FEASIBILITY
CONSTRUCTION COST ESTIMATE
ITEM
NO. NOTE DESCRIPTION QUANTITY UNIT UNIT PRICE AMOUNT
1 1 REVISE EXISTING WATERMAIN 1 LS $ 10,000.00 $ 10,000.00
2 2 ADDITIONAL COST TO PROPOSED SANITARY SEWER 1 LS $ 11,250.00 $ 11,250.00
3 STRUCTURE EXCAVATION 1 LS $ 9,000.00 $ 9,000.00
4 BITUMINOUS PAVEMENT 25 TON $ 35.00 $ 875.00
5 12" RC PIPE SEWER 250 LF $ 25.00 $ 6,250.00
6 12" RC PIPE APRON 1 EACH $ 350.00 $ 350.00
7 DRAINAGE STRUCTURE 1 EACH $ 1,000.00 $ 1,000.00
8 3 12'X10' PRECAST CONCRETE BOX CULVERT 1 LS $ 94.800.00 $ 94.800.00
9 CONCRETE RETAINING WALL 1 LS $ 454,250.00 $ 454,250.00
10 4 ELECTRIC LIGHTING SYSTEM 1 EACH $ 12.500.00 $ 12,500.00
11 WIRE FENCE 1,100 LF $ 25.00 $ 27.500.00
SUBTOTAL $ 627.775.00
15% CONTINGENCIES $ 94,166.25
TOTAL $ 721,941.25
ROUNDED TOTAL S 725,000.00
NOTES:
ESTIMATE DOES NOT INCLUDE RIGHT-OF-WAY COSTS
A 15% CONTINGENCY IS ADDED TO ADDRESS ITEMS THAT WILL NOT BE QUANTIFIED UNTIL FINAL DESIGN
1. ASSUMES INSTALLING 45 DEGREE BENDS AND LOWERING UNDER THE UNDERPASS
2. ASSUMES INSTALLING UNDER THE UNDERPASS AND INCLUDES AN ADDITIONAL MANHOLE AND ADDITIONAL EXCAVATION
3. INCLUDES DAMPPROOFING AND SELECT GRANULAR BACKFILL
4. INCLUDES FIXTURES, WIRING, CONDUIT. AND CONNECTION TO SOURCE OF POWER
7/16/2004