Project Overview

The Orange County Transportation Authority (OCTA), in partnership with the California Department of Transportation (Caltrans), is improving State Route 91 (SR-91) from State Route 57 (SR-57) to State Route 55 (SR-55). OCTA and Caltrans are working with the neighboring cities of Anaheim, Orange, Placentia, Fullerton and Yorba Linda. The project will improve mobility throughout the corridor by making operational improvements that will reduce weaving and merging between ramps and interchanges.

Project Map

Segment 1, SR-91/Lakeview Avenue Interchange

• Reconstruct Lakeview Avenue overcrossing to include standard lanes, shoulders and sidewalks in each direction

• Realign westbound State Route 91 (SR-91) on-ramp at Lakeview interchange

• Add new on-ramp from Lakeview connecting directly to SR-55

• Separate westbound SR-91 and southbound SR-55 traffic

Segment 2, Between SR-55 and SR-57

• Add new eastbound general purpose lane

• Reconstruct Kramer Boulevard and Tustin Avenue overcrossings to include standard lanes, shoulders and sidewalks in each direction

Segment 3, SR-91/SR-57 Interchange

• Improve westbound SR-91 to northbound and southbound SR-57 connectors Add an auxiliary lane from SR-57 to Raymond Avenue/East Street off-ramp

• Reconstruct La Palma Avenue overcrossing to include standard lanes, shoulders and sidewalks in each direction

• Add bypass ramp for northbound SR-57 Orangethorpe Avenue off-ramp prior to SR-91, eliminating the need to merge across multiple lanes at the interchange

Funding

The project cost is $779 million and is funded by Federal, State and Local sources.

Project Schedule

Segment 1	Segment 2	Segment 3
Early 2025 to Late 2027	Early 2026 to Early 2030	Late 2025 to Mid-2029

*Schedule subject to change