The Point: Avoid the area or expect significant travel delays, Friday night to Monday morning

Travel on southbound Interstate 15 will take longer than usual this weekend, due to the closure of all lanes on southbound I-15 just north of the 91 in Corona. Lanes will be closed from Friday, June 10 at 9 p.m. to Monday, June 13 at 5 a.m. The closure will allow crews to place support structures over I-15 as part of RCTC’s 15/91 Express Lanes Connector Project.

To support the full closure, the southbound 15 Express Lanes from Route 60 to the 15/91 Interchange will be closed along with the southbound I-15 on-ramps at Second Street and Hidden Valley Parkway in Norco. The southbound 15/westbound 91 connector will remain open. All lanes on northbound I-15 and the northbound 15 Express Lanes also will be open.

Please avoid the area by using regional detours, including Route 60, Route 71, or Interstate 215 to connect to southbound I-15 and allow extra travel time. Motorists who must travel on southbound I-15 should expect significant delays and may follow local detours using Main Street, Hidden Valley Parkway, or Second Street. See detour map.

SB15 closure regional detour map FINAL

Construction activity is subject to change due to wind or other factors. If the scheduled work cannot be completed the weekend of June 10-13, it may be rescheduled for the weekend of June 24-27.

Placing the support structures over I-15 is a key component of construction of the 15/91 Express Lanes Connector. The June weekend closure is the second in a series of four weekend closures that are needed for the project. The first occurred in January to place support structures over the 91. The two remaining weekend closures will allow crews to remove the support structures. Please watch for future information.

RCTC, in partnership with Caltrans, began construction of the connector in April 2021 to build a seamless link between the 15 Express Lanes and the 91 Express Lanes. The $270 million design-build investment is expected to help reduce traffic congestion, enhance safety due to less weaving among lanes, and improve travel time reliability between the two tolled facilities. The connector is anticipated to open in 2023.

To register for construction updates, visit or text CONNECTOR to (844) 771-0995.