Starting Friday, June 20 at 9 p.m. through Monday, June 23 at 6 a.m., RCTC’s 71/91 Interchange Project will require a full weekend closure of the eastbound 91 Green River Rd. on-ramp in Corona to perform a traffic switch for the new, non-tolled eastbound 91 to northbound 71 connector and realigned eastbound 91 Green River Rd. on-ramp.

This weekend closure will also allow crews to safely complete final construction work. This work includes final lane striping, guardrail and roadway signage installation, and electrical work. During this full weekend closure, crews will permanently close the existing eastbound 91 to northbound 71 loop connector. Crews will also be realigning the eastbound 91 Green River Rd. on-ramp for direct access to the new northbound 71 connector and eastbound 91.

All this phased work is required for crews to safely open the new interchange on Saturday morning, June 21, and the realigned on-ramp on Monday morning, June 23.

Motorists are encouraged to plan ahead, follow posted detours, and allow for extra travel time during these weekend closures.

The following closures are scheduled:

Eastbound 91 Green River Rd. On-Ramp Closure Detour

During the full weekend closure, the eastbound 91 Green River Rd. on-ramp will not be accessible to motorists. To access eastbound 91, motorists are encouraged to use the Green River Rd. local road to eastbound Palisades Dr. to northbound Serfas Club Dr./ Auto Center Dr.

To avoid lengthy delays, motorists are highly encouraged to use alternate routes to access eastbound 91.

Northbound 71 Full Closure Detour

Starting Friday, June 20 at 11 p.m. through Saturday, June 21 at 6 a.m., the eastbound and westbound 91 to northbound 71 connectors will be fully closed. Motorists traveling to destinations along the 71 such as Chino, Chino Hills, and Pomona are encouraged to use alternate routes and avoid the 71/91 interchange. Regional detours include the northbound I-15 and northbound SR-57 to the SR-60 as alternate routes.

New Eastbound 91 to Northbound 71 Connector Opening

On Friday, June 20, at 11:59 p.m., the existing eastbound 91 to northbound 71 loop-connector will be permanently closed. On Saturday morning, June 21, at 6:00 a.m., the new direct, overhead connector will be opened. Once the new connector is open, motorists should pay close attention to new traffic signs and drive carefully through the new configuration.

Realigned Eastbound 91 Green River Rd. On-Ramp Opening

On Monday morning, June 23, at 6:00 a.m., the newly realigned eastbound 91 Green River Rd. on-ramp will open to motorists. Once open, the on-ramp will include direct access to both the new northbound 71 connector and eastbound 91 general purpose lanes.