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SR-91 Eastbound Lane Addition Project (SR-241 to SR-71)

This project was completed in 2010.

The Riverside Freeway (SR-91) Eastbound Lane Addition Project was the first in a series of projects intended to increase capacity, relieve congestion and improve mobility on SR-91.

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Project Overview

The Orange County Transportation Authority (OCTA), in cooperation with the California Department of Transportation (Caltrans) and the Riverside County Transportation Commission (RCTC), added a lane to the eastbound Riverside Freeway (SR-91) between the Eastern Toll Road (SR-241) in eastern Orange County and the Corona Expressway (SR-71) in western Riverside County. This project length is approximately 6 miles.

Project Benefits

  • Added one lane to eastbound SR-91 between SR-241 and SR-71.

  • Widened all lanes and shoulders in the project area to full standard widths.

  • Widened five bridges.

  • Helped relieve bottlenecks at the merger of northbound SR-241/SR-91 and at the interchange of SR-91/SR-71.

  • Improved the general flow of eastbound traffic on SR-91 in the project area.

At a Glance

Affected Cities
Total Cost
Funding Source
Approximately 6 miles Anaheim and Yorba Linda $57.77 million OC Go, Federal and Local funds

SR-91 (SR-241 to SR-71) Map