HomeMy WebLinkAbout2023-04-04 Correspondence Item Number: 8.a.
CITY OF OF IOWA CITY
COUNCIL ACTION REPORT
April 4, 2023
Memo from City Engineer: Gilbert Street Bridge Replacement
Attachments: Gilbert Street Bridge Memo
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CITY OF IOWA CITY
MEMORANDUM
Date: March 30, 2023
To: City Council
From: Jason Havel, City Engineer
A bid letting was held for the Gilbert Street Bridge Replacement Project at the Iowa Department
of Transportation on Tuesday, March 211'. At that bid letting, no bids were received for the Project.
City staff is currently working with our consultant to evaluate options for rebidding the project,
which is expected to occur later this year. A new bidding process will be initiated once the Project
is ready to be rebid.
The project generally includes the removal and replacement of the existing four-lane concrete
bridge with a new continuous concrete slab bridge over Ralston Creek, designed to meet local
and state guidelines for traffic and pedestrians, six-foot sidewalks on both sides, and aesthetic
improvements to enhance the neighborhood and views of the creek. Streambank stabilization
will occur upstream and downstream of the new bridge with the addition of fabric formed concrete
revetment and Class E revetment. Storm sewer will also be upsized from 15" to 30" diameter
RCP pipe to provide additional capacity from Court Street to Ralston Creek, where localized
flooding during heavy rainstorms has been reported. Water main improvements will also occur
immediately north of the bridge to prepare for a future project. In connection with the project, the
undergrounding of overhead private utilities within the project corridor will also occur.