Motorists traveling eastbound on 13th Street in Paso Robles will be detoured at Spring Street at the end of this month or early June for about nine months as Caltrans reduces the 13th Street Bridge to one lane.
The closure is expected to be a major change in Paso Robles as the bridge is one of only three east-west routes across Highway 101 in the city and the main route into downtown.
Those who attempt to cross the bridge’s one lane configuration should expect delays of up to 30 minutes, with the morning and afternoon commutes to be the heaviest traffic periods, officials said.
Traffic going eastbound on 13th Street from Spring Street will not be able to cross or make a left turn at Riverside Avenue during the closure, according to a city news release. Motorists will instead be detoured at two points:
Those heading north on Spring Street will be directed to turn right on 10th Street, left on Riverside Avenue, then right on 13th Street.
Those heading south on Spring Street will be directed to turn directed to turn left on 16th Street, right on Riverside Avenue and then left on 13th Street.
Alternately, the 24th Street Bridge to the north and the Niblick Bridge to the south also allow motorists to cross from east to west.
The closure is part of a $10 million grant to carry out road construction projects at Highway 46 east and Highway 101, on Riverside Avenue between 13th and 17th streets and on the 13th Street Bridge over Highway 101.
Upon completion of the bridgework, there will be signal upgrades at Riverside Avenue and Paso Robles Street and three lanes for westbound traffic.
The eastbound closure allows crews to work at the south side of the bridge.
The open lane will change in about nine months when construction switches to the north side of the bridge, officials said. Another closure will be set up at that point to last another six to nine months while the north end of the bridge is worked on.