Lane and ramp closures will occur on the 405 Freeway between the 10 and 101 freeways for about a month beginning Tuesday.
The closures, from 10 p.m. to 6 a.m. on weeknights, will affect portions on the northbound and southbound lanes on alternate days, according to the Metropolitan Transportation Authority.
The closures will allow workers to place concrete barriers on the right shoulders of the freeway as part of a project to build a 10-mile northbound carpool lane, the transportation agency said.
Motorists can find details on the closures at the MTA’s project web page and Twitter account.
— Robert J. Lopez