Octa's transportation blog

Improved Mobility Coming to SR-91 Corridor between SR-55 and SR-57

The SR-91 Improvement Project, scheduled to break ground soon, will improve 5.6 miles of SR-91 through Anaheim, Fullerton, Orange, Yorba Linda and Placentia.

The project 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.

The project will be constructed in three segments:

  • Segment 1 (SR-55 to Lakeview Avenue)
    • Reconstruct Lakeview Avenue overcrossing to include standard lanes, shoulders and sidewalks in each direction
    • Add new on-ramp from Lakeview connecting directly to southbound SR-55 to reduce weaving and merging at the westbound SR-91 and southbound SR-55 interchange
    • Realign westbound SR-91 on-ramp at Lakeview interchange
    • Separate westbound SR-91 and southbound SR-55 traffic
  • Segment 2 (La Palma Avenue to SR-55)
    • Add a new eastbound general-purpose lane
    • Reconstruct Kramer Boulevard and Tustin Avenue overcrossing to include standard lanes, shoulder and sidewalks in each direction
  • Segment 3 (Acacia Street to La Palma Avenue)
    • 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
    • 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

The $790 million project is funded through a combination of federal, state and local sources, including OC Go and excess toll revenue from the 91 Express Lanes. OC Go, also known as Measure M, is Orange County’s half-cent sales tax for transportation improvements.

For more information on the project and to stay connected with the project by signing up for email alerts, please visit here.