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WHAT:

Crews are underway reconstructing the northbound (NB) SR-55 Dyer Road straight on-ramp, which requires an extended closure of the ramp. During this period, crews are also expected to perform an extended closure of the NB Dyer Road loop on-ramp, as well as the NB SR-55 outside lane between Dyer Road and Warner Avenue for paving work.

WHEN:

The straight on-ramp closed at 9 p.m., Tuesday, April 21 and is expected to reopen to motorists by 5 a.m., Friday, May 1.

The loop on-ramp and outside lane are expected to close as soon as 9 p.m., Friday, April 24 and reopen by 5 a.m., Monday, April 27.

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

Northbound Dyer Road Straight On-Ramp Detour Map

Northbound Dyer Road Loop On-Ramp Detour Map

WHAT:

Crews are expected to perform concrete paving work along the southbound SR-55 McFadden Avenue on-ramp, which will require a 30-day closure of the ramp.

WHEN:

The on-ramp is expected to close as soon as 9 p.m., Wednesday, May 6 and reopen to motorists by 5 a.m., Friday, June 5.

Visit www.octa.net/55Construction to view updates regarding construction activities and closures. 

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

Bridge reconstruction at Dyer Road and the railroad continues to make progress as crews aim to complete both bridges before the end of this year.

At the Dyer Road bridge, crews are pouring concrete at the abutments. At the Railroad bridge, contractors are constructing the bridge deck and are expected to remove falsework, or temporary support structures, in mid-May.

Bookmark the closures and detours map for quick access to real-time construction information. Click on the construction icons to view activities and closures.

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.