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WHAT:

Crews will demolish the concrete barrier along the east side of the SR-55 bridge over MacArthur Boulevard to accommodate the freeway improvement project.

This work will require closing MacArthur under the freeway as well as the northbound and southbound loop on-ramps. The off-ramps and the straight on-ramps will remain open.

WHEN:

9 p.m. to 5 a.m. nightly, beginning as early as Monday, Jan. 23, to Wednesday, Jan. 25.  

This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

OCTA, in cooperation with Caltrans, is improving 4 miles of SR-55 between I-405 and I-5. The project will improve traffic flow and reduce travel time by adding one regular lane and one carpool lane in each direction. Also, the project will add merge lanes between several interchanges and stripe carpool lanes for continuous access, augmenting safety on the freeway by making merging easier. These enhancements are expected to create a better, smoother driving experience for motorists.