Traffic shift coming this weekend to southbound I-405 near SR 167 interchange

March 29, 2018 11:30 am
The I-405/SR 167 interchange is one of the most heavily congested interchanges in the state. Through this project, WSDOT will build a new flyover ramp connecting the HOT lanes on SR 167 to the carpool lanes on I-405 in Renton. This ramp is designed to improve traffic flow and safety at this critical interchange. COURTESY MAP, WSDOT

For the Reporter

Drivers who use southbound Interstate 405 near State Route 167 in Renton should prepare for a new traffic configuration in this area as soon as Sunday morning, April 1.

Overnight Friday, March 30 and Saturday, March 31, construction crews working for the Washington State Department of Transportation plan to complete striping work to move the southbound I-405 lanes farther to the right side of the roadway. The same number of lanes will remain in place after the shift is complete.

This traffic change is necessary to provide crews enough space to create a new construction work zone in between the southbound and northbound lanes of I-405. They will use this area to continue building the future flyover ramp for the I-405/SR 167 Interchange Direct Connector Project.

This work requires lane and ramp closures on southbound I-405 near the SR 167 interchange. The construction activities are weather dependent and subject to change. If crews cannot complete the work this weekend, they will postpone their work to the next dry nights.

Lane closures:

• Friday, March 30, to the morning of Sunday, April 1 – Rolling slowdowns are scheduled on southbound I-405 between SR 900 and SR 167 from midnight to 4 a.m.

• Friday, March 30, to the morning of Saturday, March 31 – Up to two lanes of southbound I-405 between SR 900 and the Benson Road South bridge will be closed from 11 p.m. to 6 a.m.

• Saturday, March 31, to the morning of Sunday, April 1 – Up to two lanes of southbound I-405 between Talbot Road South and SR 167 will be closed from 10 p.m. to 9 a.m.

Ramp closures:

• Friday, March 30, to the morning of Sunday, April 1 – The southbound I-405 ramp to southbound SR 167/Rainier Avenue South will be closed from 11 p.m. to 6 a.m. A signed detour will be in place.

• Friday, March 30, to the morning of Saturday, March 31 – The northbound SR 167 ramp to southbound I-405 will be closed from 11 p.m. to 6 a.m.

• Saturday, March 31, to the morning of Sunday, April 1 – The northbound SR 167 ramp to southbound I-405 will be closed from 10 p.m. to 6 a.m.

For the latest construction closure information for this project, please visit the I-405 Construction Updates page and the King County Construction Updates page.