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SR-91 (SR-57 to SR-55) Improvement Project

SR-91 (SR-57 to SR-55) Improvement Project

The Orange County Transportation Authority (OCTA), in partnership with the California Department of Transportation (Caltrans), is improving State Route 91 from State Route 57 to State Route 55.

OCTA and OCGO Logo DarkBlue   SR-91 Improvement Project Logo

Project Overview

The project, which is in the design phase, will improve mobility throughout the corridor, reduce weaving and merging between ramps, and improve on- and off-ramps, sidewalks and bike lanes at the Glassell Street, Tustin Avenue and Lakeview Avenue interchanges. OCTA and Caltrans are working with the neighboring cities of Anaheim, Orange, Placentia and Fullerton.

Project Schedule


Segment 1
Segment 2
Segment 3

Late 2024 to Early 2028

Mid-2026 to Early 2030

Late 2025 to Mid-2029

Contact the SR-91 Community Outreach Team

If you have questions or would like to request information in other language, please contact the Outreach Team at (888) 280-7966 or email 91project@octa.net.