CITY COUNCIL AGENDA ITEM
ACTION REQUESTED:
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Adopt the resolution approving an Intergovernmental Agreement between the City of Naperville and the Illinois State Toll Highway Authority regarding the inclusion of city work in the rehabilitation of the Washington Street Bridge over I-88
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DEPARTMENT: Transportation, Engineering and Development
SUBMITTED BY: Peter Zibble, Sr. Civil Engineer
BOARD/COMMISSION REVIEW:
N/A
BACKGROUND:
In 1999, the City of Naperville entered into an Intergovernmental Agreement with the Illinois Tollway to share costs associated with the reconstruction of the Washington Street Bridge over I-88. As part of that Agreement, the City agreed to accept future maintenance responsibilities for the upper portions of the bridge directly related to vehicular and pedestrian traffic along Washington Street. The City is responsible for the bridge deck, the approach slabs, parapets and railings, sidewalk, pavement markings, and lighting.
The Illinois Tollway programmatically schedules repairs and preventive maintenance for all bridges in their system 25 years after construction. As such, they hired a consultant to evaluate the condition of the Washington Street Bridge and prepare engineering plans. The scope of the work attributable to the City includes epoxy crack injection, deck slab repairs, expansion joint replacement and deck sealing to minimize water intrusion. The work also includes sidewalk repairs and modernization of the crash barrier terminals.
The Illinois Tollway is proposing to package the Washington Street Bridge along with six other bridges in the area and bid all of the work as a single contract. The size of the contact should result in more competitive bids.
DISCUSSION:
The Illinois Tollway has requested that the City enter into an Intergovernmental Agreement to allow the maintenance work, attributable to the City, to be completed under a Tollway contract. City staff believes that this approach is the most cost-effective way to maintain the bridge and extend its useful life. The total cost of the work for which the City is responsible is estimated to be $386,640. The City’s Bridge Program Manager has reviewed the construction plans and concurs with the proposed improvements.
FISCAL IMPACT:
CIP #: BR038
Washington Street Bridge over I-88 maintenance will be expensed to the Infrastructure account listed below. This work is scheduled to take place in 2026, and as a result expenses associated with this Agreement will not be realized until 2026. While the 2026 budget is still being developed, staff will ensure there is sufficient funding included in the budget to support this agreement in 2026.
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Account Number |
Fund Description |
Total Budget Amount |
|
30282200-551502 |
Capital Projects Fund |
TBD |