Completed Construction

The Riverside County Transportation Commission, in partnership with Caltrans, repaved lanes and made repairs to sound walls and associated concrete barriers along the outer portions of eastbound and westbound 91 in Corona. Work took place mainly between the Lincoln Ave interchange and Interstate 15, an area with a long history of roadway settlement. This work was part of an ongoing investment in the heavily traveled 91 corridor.

The “91 Refresh” work took place from summer of 2022 through the fall of 2023.

The I-15 Interim Corridor Operations Project was the result of an agency task force led by staff from RCTC, Caltrans, the City of Corona, and the County of Riverside. The group began meeting in June 2021 to study alternatives and develop near-term improvements to help improve traffic operations. The CHP also provided input regarding safety and vehicle pull-over locations.

The project added a non-tolled lane to southbound I-15 between the Cajalco Road on-ramp and the Weirick Road off-ramp, a distance of just under one mile. To add the lane, crews strengthened the pavement of the outer and inner I-15 shoulders to handle traffic loads. Crews restriped the roadway to provide three 11-foot wide lanes, one 12-foot wide lane, a varying 3 to 8-foot wide outer shoulder, and a varying 2 to 5-foot wide inner shoulder. The new lane opened July 23, 2022.

The I-215 Placentia Avenue Interchange in Perris is the first construction project of the Mid County Parkway, a new 16-mile transportation corridor between the San Jacinto and Perris valleys. The Mid County Parkway is designed to reduce travel times between these areas. Please see the Mid County Parkway Ramona Expressway page for details about this corridor.

Designed to meet the needs of a growing population, the Placentia interchange project provides a new way to enter and exit I-215. The new interchange is located between Ramona Expressway to the north and Nuevo Road to the south. It was designed to improve access, traffic flow, and air quality by adding on-ramps and off-ramps to Placentia Avenue, realigning East Frontage Road, widening the Placentia Avenue overcrossing, and adding lanes to Placentia Avenue between Harvill Avenue and Indian Avenue.

The Riverside County Transportation Commission is building the Route 91 Pachappa Underpass in Riverside. The project will include construction of a retaining wall and removal of part of an overhead railroad bridge. Construction began in April 2020 and was completed in October 2021.

RCTC, in partnership with Caltrans, constructed the 15/91 Express Lanes Connector, linking the 15 Express Lanes to the 91 Express Lanes. The project provides a new connection from the eastbound 91 Express Lanes to the northbound 15 Express Lanes and from the southbound 15 Express Lanes to the westbound 91 Express Lanes.

The 15/91 Express Lanes Connector was designed to provide a seamless transition between these Riverside County tolling systems for reliable, convenient travel for residents of Corona, Norco, Jurupa Valley, Eastvale, and points north in San Bernardino County, as well as express buses. The project also extended both the eastbound 91 outside general purpose lane and the eastern end of the 91 Express Lanes approximately one-half mile east to Promenade Avenue to help with vehicle merging in this area.

Project benefits and features include:

• Reduce congestion and improve traffic operations
• Enhance safety
• Create a seamless transition and increase travel time reliability between these two tolled systems

The Riverside County Transportation Commission, in partnership with Caltrans and the City of Lake Elsinore, upgraded the Interstate 15 Railroad Canyon Interchange in Lake Elsinore.

The project was built to address the needs of the area’s growing number of residents and recreational visitors. The project also was designed to improve traffic flow for people traveling to and from Canyon Lake. Benefits and features included:

• Safety: Built auxiliary lanes on I-15 to help drivers enter and exit the highway and reduce traffic back-ups
• Capacity: Added two new lanes on Railroad Canyon Road through the interchange and new lanes to the on-ramps and off-ramps with I-15
• Traffic Flow: Replaced the northbound diamond off-ramp with hook-style on– and off-ramps that both connect to Grape Street
• Cleaner Air: Reduced the number of idling vehicles waiting to enter/exit I-15, for improved air quality
• Access: Constructed sidewalks and bike lanes along Railroad Canyon Road

The Riverside County Transportation Commission, in partnership with Caltrans, the Orange County Transportation Authority, the City of Corona and the Transportation Corridor Agencies, opened the new westbound 91 lane between Green River Road in Corona and the 241 Toll Road in Anaheim on January 6, 2022. This new lane was the centerpiece of the Route 91 Corridor Operations Project. RCTC led the project through construction.

RCTC, in partnership with Caltrans, widened a 4.5-mile section of Route 60 from Gilman Springs Road to 1.4 miles west of Jack Rabbit Trail in Riverside County’s Badlands between Moreno Valley and Beaumont. The project was within mountainous terrain with a curving alignment and steep grades. The project was designed to improve safety and efficiency of travel between the Coachella Valley and western Riverside County.  Click here to view project videos. 

Project features included:

• Constructing an eastbound truck climbing lane
• Constructing a westbound truck descending lane
• Widening shoulders to standard widths – 12-foot exterior shoulders and 11-foot interior shoulders
• Establishing two wildlife crossings and placing wildlife fencing
• Improving motorist sight distance by flattening roadway curves