ANTIOCH -- City leaders this week approved awarding a $10.3 million construction bid for a Wilbur Avenue overcrossing.

ProVen Management Inc. will seismically retrofit the existing bridge that crosses over the BNSF railroad track in the northeast area of town and widen it from two to four lanes.

The project is aimed at improving traffic circulation and safety in that corridor, which has been identified by city leaders as having potential for future business development.

The current two-lane bridge, that is about an eighth of a mile long, fails to meet city and state standards.

The San Francisco-based company will start work in January, with construction being completed in summer 2014, according to a city staff report.

ProVen's bid was protested by Pleasanton-based California Engineer Contractors, who bid $10.45 million for the project, saying Proven did not submit painter certification and failed to submit some subcontractor names and bid item names.

ProVen disputed those claims, and city staff concurred.

The Wilbur project is being funded mainly by federal grant money for highway bridge rehabilitation and replacement, with a small portion from county transportation tax Measure J.

Contact Paul Burgarino at 925-779-7164. Follow him at Twitter.com/paulburgarino.