PITTSBURGH -- For the next two weeks, single-lane closures will be taking place on the Roberto Clemente, Andy Warhol and Rachel Carson Street bridges.

Traffic will be restricted to a single lane from 9 a.m. to 3 p.m. so repairs can be made on the downtown sides of each of the three bridges.

The contracting firm hired to repair the bridges said the closures will only affect one bridge at a time for the next two weeks.