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Transportation staff seeks committee support to add site to retaining-wall contract, citing 35% increase request
Summary
Staff told the Transportation Committee a construction contract for retaining-wall repair needs an estimated 35% increase (about $120,000) because of standard change orders and a newly cleared right-of-way that allowed adding a second wall to the existing contract.
Transportation Division staff told the DuPage County Transportation Committee on April 1 that a retaining-wall construction contract issued in August 2024 requires an increase of about 35 percent, roughly $120,000, to cover change orders and to add a wall at a location that was excluded from the original bid when right-of-way wasn’t cleared.
Staff said roughly 15 percent of the increase stems from standard change-order items such as extra length on a wall and higher railroad permitting costs. The remaining approximately 20 percent (about $70,000) would pay for adding the newly cleared site on Naperville Road just south of Roosevelt, near a cross street in Elm, where an old timber wall will be replaced with stone.
The vendor has agreed to honor original unit prices for the added work, staff said, and department staff recommended amending the existing contract rather than mobilizing a new contract, which they said would likely cost more. No formal contract amendment was approved at the meeting; staff said they would return with a formal amendment for committee action at a future meeting.
Member Deacon Garcia asked where the new wall is located; staff confirmed it will be on Naperville Road just south of Roosevelt. A committee member also asked whether tariff-driven material cost increases (for example, rebar) could affect prices; staff replied that Buy America federal provisions apply to federally funded work, but these repairs are not federally funded and therefore present a different procurement risk profile.
The committee heard the explanation in old business and did not vote to amend the contract at the meeting.
