The San Mateo-Hayward Bridge will be shut down to vehicles tonight as the first of two planned weekend closures this month takes place.
The span will be off-limits to cars in both directions starting at 10 p.m. and lasting through 5 a.m. Monday. The bridge will be closed for the same duration the following weekend.
The closure is necessary so work crews can repair a damaged expansion joint, which allows the bridge to expand and contract under differing temperatures and seismic pressures. The total cost of the project is estimated to be $3 million, which will come from regional toll funds.
More than 16.2 million cars pass over the bridge every year.