Wilshire I-405 Ramp to Close for 2 Weeks

The southbound 405 Freeway offramp to westbound Wilshire Boulevard will close for two weeks beginning Friday, March 8 as part of the continuing effort to improve the interchange, according to Metro.

It's duration shouldn't have the impact of the Westside's "Ramp Jam" from 2012, but Metro and Caltrans advise motorists to plan ahead, adjust travel times or share a ride. The latest Wilshire ramp closure begins Friday at 8 p.m and the new ramp is scheduled to open by 6 a.m. Friday, March 22.

The agency reported Monday that once the new, seismically updated and higher capacity ramps are complete, the project will reduce the traffic conflicts between Wilshire Boulevard and the I-405. The work, touted by Metro as one of the I-405 project's greatest local traffic improvements, should reduce backup at other north/south streets, and bring capacity to meet expected vehicle demands in 2031.

Once the ramp closes, the contractor, Kiewit Infrastructure West, will demolish the existing off-ramp, rebuild it, conduct roadway paving and shift K-rail. This is the third ramp to be demolished and rebuilt to date as part of the eight-ramp Wilshire interchange improvement work.

The detour route is as follows:

• Santa Monica Boulevard exit eastbound to Sepulveda Boulevard to Wilshire Boulevard. 
• A detour route map is available on www.metro.net/projects/I-405/segment-detours/.
• Changeable message signs will be used, and traffic control officers will be deployed to help direct drivers and mitigate traffic impacts.

The construction schedule is subject to change based on daily progress, weather and field conditions.

For additional project information or to obtain detour maps, visit www.metro.net/405.