
Freeing Up the 55
This project will increase freeway capacity, reduce congestion and smooth traffic flow by adding new lanes and delivering operational improvements between interchanges.
Snapshot of Current Congestion
- SR-55 carries 295,000 vehicles per day
- Estimated to 332,000, an increase of 13 percent in the future
Upgrades
The new lanes and improvements will generally be delivered within the existing right of way. The project's major elements and segments consist of:
- Adding new lanes to SR-55 between SR-22 on the north and I-405 on the south
- Delivering improvements on SR-55 between SR-91 on the north and SR-22 on the south
In addition to these projects, federal and state funds will be used to deliver a new street overcrossing and carpool ramps at Alton Avenue.
All of these improvements will be developed in cooperation with local jurisdictions and communities.
Contact Information

Sarah Swensson
Senior Community Relations Specialist
(714) 560-5376 | sswensson@octa.net