Drivers will need to plan their trips around the thousands of runners who will be pounding the pavement in Seattle on Saturday, June 23, for the Rock ‘n’ Roll Marathon. The race will temporarily close the Alaskan Way Viaduct, the Interstate 90 express lanes as well as numerous ramps on Interstate 5.

The northbound lanes of State Route 99 will close from Diagonal Avenue S. in SoDo through the Battery Street Tunnel to Roy Street from 5 a.m. until 3:30 p.m. Ramps along the route will also be closed. The southbound lanes of SR 99 will remain open to drivers.

The I-90 express lanes will be closed at 4 a.m. and will reopen to eastbound traffic by 2 p.m.

The following ramps will be closed from 5 a.m. until 10 a.m.:

• Southbound Rainier Avenue South on-ramp to eastbound I-90
• East and westbound I-90 off-ramps to Rainier Avenue South
• All ramps to and from Dearborn Avenue to I-5.