🚧 Construction Is Here on State Route 57 (Orangewood to Katella)

As of March 16, 2026

For more information about this project, please contact the Community Outreach Team, by calling (800) 440-0457, by email at 57NBproject@octa.net or visit octa.net/57NBproject.

Para obtener más información sobre este proyecto, comuníquese con el Equipo de Alcance Comunitario llamando al (800) 440-0457, enviando un correo electrónico a 57NBproject@octa.net o visite octa.net/57NBproject.

CONSTRUCTION IS HERE
for the SR-57 Northbound Improvement Project!

Improvements are coming to the SR-57 between Katella and Orangewood Avenue — and construction is now underway.

The Orange County Transportation Authority (OCTA), in partnership with Caltrans, is improving this one mile stretch to alleviate congestion, enhance freeway operations, and improve regional circulation of goods and services for the 120,000+ drivers who use it every day.

Project Activities

With construction activities underway, crews may begin implementing the following preliminary measures in the coming weeks to support upcoming work and ensure traffic safety and awareness:

Traffic Control Devices: Crews will install traffic control devices throughout the project area, including cones, barricades, and detour and temporary speed reduction signage, to safely guide motorists in the construction zones.

As part of the upcoming work, you may notice the following preliminary construction activities in your area*:

Temporary Striping: Crews will install temporary pavement markings; nightly full ramp closures are anticipated so crews can safely perform this work. More information will be provided in a future alert.
Vegetation Removal and Earthwork: Crews will remove vegetation and perform grading activities to allow crews safe access to the work area.
Utility Location and Surveying: Crews will take measurements and mark the ground to confirm exact locations for the work. Small, carefully controlled test holes (also called potholing) may be dug to safely locate existing underground utilities such as water, gas, or electrical lines.

*Nighttime lane closures on NB SR-57 will occur regularly throughout construction.

Freeway lane closures will occur regularly throughout the duration of the project’s construction.

RAMP & LANE CLOSURES

Nightly, from 10 p.m. to 5 a.m., starting Monday night, March 16 to Saturday morning, March 21

Northbound (NB) Orangewood Avenue on- and off-ramps
NB Katella Avenue off-ramp
NB SR-57 lane closures between Orangewood Avenue and Katella Avenue

At least one lane will be open to traffic at all times, unless otherwise specified.

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

Interactive Map

For a full list of weekly closures and detours, and the most up-to-date project information, please click on the project Google Map below.

Bookmark the closures and detours map above for quick access to real-time construction information. Click on the construction icons to view activities and closure and detour information. Plan for additional travel time through the area. Detour signs will be in place to assist motorists.

Stay Connected!

We invite you to sign up for project updates so you’ll be the first to know about upcoming construction activities, traffic changes, and community meetings and when we’ll be out in your community at local events — we hope you’ll stop by and say hello!