Closures Continue At Katella Avenue Ramps Due To $32M Freeway Project

LOS ALAMITOS, CA — As construction continues on the San Gabriel River (605) Freeway, drivers can expect occasional closures at the Katella Avenue on and off ramps that lead into Los Alamitos for at least the next year.

The closures come as part of a $32 million project from the Orange County Transportation Authority and Caltrans that will add improved safety features along the Freeway and Katella Avenue, according to city officials.

“We are pleased to continue delivering on the promises made to improve our transportation network,” OCTA Chair Doug Chaffee, also the county’s Fourth District Supervisor, said in a June statement. “This project is part of a holistic transportation approach that includes supporting public transit, active transportation, and improving streets and freeways to help people move more efficiently and safely throughout Orange County.”

Work on the project began on Wednesday, June 25, and is expected to be completed by the end of 2025, according to the Orange County Transit Authority.

Construction crews will be working weekdays between 6 a.m. to 4 p.m. Intermittent nighttime construction will occur between 9 p.m. and 5 a.m. to mitigate traffic issues.

Crews are currently working to reconstruct a new center median along Katella Avenue and Willow Street. Detours will be in place until at least Saturday morning.

The project differs from the "Super 605" project that has caused major freeway closures since mid-June. The $260 million corridor project will rehabilitate the freeway from Long Beach to the San Gabriel Valley.

The work includes "excavation, concrete work, asphalt paving, k-rail placement, striping, guardrail work, sign removal and installation, and electrical and drainage work," according to Caltrans. It will also impact freeway lanes from Telegraph Road to Katella Avenue.

For updates on the I-605/Katella Avenue Project, click here.