What is the State Route 91/State Route 71 Interchange Improvement Project?

The project proposes to improve the connection between State Route 91 and State Route 71 and enhance mobility between Riverside County, Orange County, and San Bernardino County. This estimated $118 million project is a major element of RCTC’s 10-year Measure A delivery plan and a high priority within the region.

The Project Report and Environmental Document phase involves studying proposed improvements to the SR-91/SR-71 interchange between the Green River Road interchange and the Serfas Club Drive/Auto Center Drive interchange in Corona.

In addition to the “no-build” alternative, in which no improvements would be made, RCTC is examining one “build” alternative.  This alternative would include:

• Replacing the existing single-lane connection between eastbound SR-91 and northbound SR-71 with a new, two-lane, direct flyover ramp
• Building a new, separate eastbound road just south of and parallel to SR-91 to provide improved access between the Green River Road interchange and the SR-91/SR-71 interchange.