SAN PABLO -- Caltrans plans to close up to three lanes of westbound Interstate 80 starting Tuesday night to repair damage caused when a truck carrying an excavator clipped a pedestrian overpass on Aug. 15.

The incident gouged a chunk out of the concrete at the bottom of the Riverside Avenue overpass, causing a backup that lasted more than eight hours. The overpass is located just south of the San Pablo Dam Road exit.

California Highway Patrol officials said earlier this month that the company responsible for the truck, Pio's Trucking of El Sobrante, may not have had the proper permits for an oversize load, which could leave them liable for repair expenses and sizable fines. A Caltrans spokesman could not immediately say whether the agency was planning to pursue such penalties.

The closures are planned from 9 p.m. to 5 a.m. Tuesday through Thursday. Up to three lanes will be closed, along with the San Pablo Dam Road on-ramp and the McBryde Avenue off-ramp.

At least one westbound lane will remain open during the repair work.

Caltrans advises residents in the immediate area that they may be disturbed by construction noise, but said officials will work with contractors to minimize the impact.

Contact Daniel M. Jimenez at 510-262-2728. Follow him at Twitter.com/DMJreports.