Road Closure Notice

91 Project in Corona to Require Weekend Full Closure of Eastbound and Westbound 91 Between the 71 and I-15


By fully closing the roadway, these significant construction efforts can be consolidated into one weekend, rather than extending the project over multiple weekends. The full closure will also help ensure the safety of construction crews and the traveling public by eliminating cars and construction equipment on the road.

To minimize travel delays and impacts during the closure, Riverside County Transportation Commission's strongly recommends that motorists plan ahead and completely avoid travel on and near the 91 in Corona. If travel cannot be avoided, motorists can use the 57, 60 and I-10 as alternate routes. Motorists traveling on the 91, 71 or I-15 near the project area during the closure period can expect delays of three to four hours. Please see detour map below.

Once the weekend construction activities are completed, more work is on the way for the Maple Street area during the coming months. Crews will rebuild the Maple Street bridge and construct the flyover ramp bridge across the 91. Nightly full closures of eastbound 91 likely will be required for about a week following the full weekend closure; additional periodic nighttime closures will occur in the future. Once the flyover ramp bridge at Maple Street is completed this summer, another full closure of the 91 may take place to remove the temporary support beams that will be placed during the weekend of February 19-22.

For questions, please call the project helpline at (877) 770-9191 or visit We thank you for your patience and understanding.