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WHAT:

Crews are expected to reconstruct the northbound SR-55 Dyer Road loop on-ramp, which will require an extended closure of the ramp.

WHEN:

The on-ramp is expected to close as soon as 9 p.m., Friday, Oct. 24 and reopen to motorists by 5 a.m., Sunday, Nov. 23.

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

Crews are expected to reconstruct the northbound SR-55 Dyer Road straight

on-ramp, which will require an extended closure of the ramp. Additional information will be provided in future communications.

This section will feature progress and milestones the construction crews are making behind k-rail.

Crews are hard at work reconstructing the bridge over the railroad tracks, with completion expected for early 2026. Contractors are currently building the bridge footing and pier protection wall. Next, crews are expected to remove temporary shoring and drill piles for the abutments.

Visit octa.net/55Construction to stay informed on construction progress.

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.