Construction Alert As of April 20

As of April 20, 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.

Project Activities

Please be advised that his work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

RAMP & LANE CLOSURES

Intermittent ramp closures, from 11 p.m. to 5 a.m., Monday night, April 20 to Tuesday morning, April 21 and again on Friday night, April 24 to Saturday morning, April 25.

Northbound (NB) Orangewood Avenue Loop On-Ramp
NB Orangewood Avenue Straight On-Ramp

Ramp closure, from 11 p.m. to 5 a.m., starting Friday night, April 24 to Saturday morning, April 25

NB Katella Avenue Off-Ramp

Lane closures, from 10 p.m. to 5 a.m., starting Friday night, April 24 to Saturday morning, April 25

NB SR-57 lane closures between Chapman Avenue and Katella Avenue

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

Road closures, from 10 p.m. to 6 a.m., starting Friday night, April 24 to Saturday morning, April 25

EB/WB Orangewood Avenue at SR-57

PILE INSTALLATION ACTIVITIES

Orangewood Avenue

Crews will continue installing piles at Orangewood Avenue adjacent to the northbound SR-57.

Ongoing from 6:30 a.m. to 4 p.m. for approximately two weeks.

Crews may mobilize as early as 6 a.m.

Santa Ana River

Crews will continue installing piles at the Santa Ana River adjacent to the northbound SR-57.

Ongoing from 6:30 a.m. to 4 p.m. and may continue for several weeks.

Flaggers will assist cyclists and pedestrians, as needed.

The SR-57 Community Outreach Team will provide updates in future alerts.

Crews may mobilize as early as 6 a.m.

CONSTRUCTION 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.

Speed Limit/Safety Reminder: Please look out for posted speed limit and traffic control signs. Slow down within construction work zones, for the safety of motorists and crews.

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!