Report to Mayor and City Council
Wednesday, November 07, 2018
Discussion
SUBJECT:
Title
STATUS UPDATE AND CONSIDER APPROVAL OF ADDITIONAL FUNDING FOR PROJ. 919: WILMINGTON AVENUE INTERCHANGE MODIFICATION AT THE I-405 FREEWAY (CITY COUNCIL)
Body
I. SUMMARY
The Carson Successor Agency and the City Council are undertaking Project No. 919: Wilmington Avenue Interchange Modification at the I-405 Freeway (Exhibit No. 1). The project includes the construction of a new northbound on-ramp, widening Wilmington Avenue from 223rd Street to 220th Street, modifying the existing southbound on-ramp, and constructing a right-turn lane from Wilmington Avenue northbound to 223rd Street eastbound by widening the existing bridge over the Dominguez Channel (Exhibit No. 2). The project also includes a renovated grade crossing and Union Pacific Railroad ("UPRR") Road right of way (UPRR).
Staff is providing update on the project and requesting the City Council and the Successor Agency Board to authorize additional funds in the amount of $1,500,000 to complete the project. There is no impact to the General Fund with this funding request. The contractor has completed 95% of the project. Project completion has been delayed since February 2018 to resolve a complex UPRR grade crossing signal communication issues between UPRR and Caltrans. Changes in the design by the California Public Utilities Commission resulted in additional grade crossing work costing $605,000. The City agreed in 2014 to reimburse UPRR for the "actual costs" of the crossing upgrade.
There are additional new requirements of traffic loops, pavement markings, and regulatory signs in addition to labor costs. Unexpected costs from new Caltrans requirements including crash cushions and the relocation of a traffic controller and modification to a concrete barrier wall at $790,000. There are also additional costs from the extended construction management due to the grade crossing delay, plus time-related delays from...
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