CR2002-146 Change Order Lake ST Bridge
CITY OF
~
HOPKINS
. August 29,2002 Council Report 2002-146
Approve Construction Change Order - Lake Street Bridge Reconstruction Project,
Project No. 99-03
Proposed Action.
Staff recommends adoption of the following motion: Move that Council approve
additional construction costs in the amount of $142,210.64 for construction work
provided bV Lunda Construction Co, and its subcontractors on the Lake Street Bridqe
reconstruction project.
Overview.
Difficulties in constructing the utility pipe improvements have resulted in much higher
construction costs. The major factors that led to these higher costs include:
- Location of MCES force main different than shown on MCES as-builts
- Presence of old wood pilings under bridge
The attached SRF memo goes into more detail on construction changes caused by the
above factors, The cost increases caused by these factors amount to about $110,000.
An additional cost increase, $32A79.52, is due to increased labor costs caused by the
one-year construction delay. The original construction contract was awarded for
. $552,187,00, The majority of the additional costs are divided between the water and
sanitary sewer utilities.
The attached itemized cost sheet shows contract bid items not done because of the
differing site conditions and the new work and associated costs of the actual work
completed.
Primary Issues to Consider.
. Additional Fee Justification: These costs were based on hourly-negotiated fees that
were agreed to last November when it became apparent that the utility work could
not be done according to the construction plan. All construction done under the
hourly fee was inspected to verify the actual additional costs,
Supportinq information.
. M~):O~ memo
Steven J. Stadler, Public Works Director
Financial Impact: $ 142,210.64 Budgeted: Y/N N Source: Utility funds
. Related Documents (CIP, ERP, etc.):
Notes: Utility Funds: $142,210,64
,
rmD CONSULTING G ROUP, I N C.
. Transportation. Civil' Structural · Environmental' Planning. Traffic. Landscape Architecture' Parking
MEMORANDUM SRF No. 0993426
TO: Steve Bot, City of Hopkins
FROM: Robert Moore, SRF
DATE: March 19, 2002
SUBJECT: LAKE STREET OVER MINNEHAHA CREEK
HoPKil'JS PROJECT No. 99-03
SAP No. 136-080-01
Following is a summary of changes made to the Sanitary Sewer and Water Main on the above
referenced project:
. Moved valve on the east side further to the east to allow room for the jacking pit.
. Added an additional valve on the east side to keep water live to the new hydrant.
. Placed a temporary water service from the hydrant to the house on the north side of Lake
Street.
. . Moved the valves on the west side further west to allow room to construct the new Sanitary
Manhole. This required additional bends to tie in the water service to the south.
. Due to location of the MCES force main, the jacking pit has to be placed on the west side
rather than the east. This requires additional sheet pile to secure the water main and a bypass
pump set up to reroute the sanitary sewer service from the south, to do this a temporary
manhole was set.
. An additional sanitary manhole is placed on the east side to move away from the MCES
force main.
. During jacking operations an old wood piling was hit on the west side of the bridge. This
caused a change in the casing sizes from two IS-inch casings to a 42-inch casing with 2
separate casings inside. This change was made to be able to access the casing to remove the
piling and to avoid any conflicts with additional piling during the water main jacking.
. While jacking under the creek, the creek bed broke through to the jacking and flooded the
jacking pit. With a lot of pumping and effort, the contractor gets the jacking across and the
flooding stopped.
. The sanitary on the east side is realigned because MCES will not allow us to dig next to their
line.
. A new manhole is constructed on the west side and two sanitary services are tied in.
. Several additional bends are needed to tie the water main together.
. Two corporation stops are needed on the water main for testing so we can keep water live to
. the hydrant on the east side.
. Water service on the east side is hooked up permanently.
One Carlson Parkway North, Suite 150, Minneapolis, MN 55447-4443
Telephone (763) 475-0010. Fax (763) 475-2429. http:/ /www.srfconsulting.com
An Equal Opportunity Employer
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