The Interstate 405/State Route 167 Interchange Direct Connector Project is building a flyover ramp connecting the High Occupancy Toll Lanes on SR 167 to the High Occupancy Vehicle Lanes on I-405. The finished ramp will help to reduce congestion and minimize weaving issues at this interchange.
Weekend Closures planned
As part of the project, crews will repave northbound I-405 between the SR 167 interchange and SR 515/Talbot Road South. In order to repave this section of roadway, crews will close the two left lanes of northbound I-405 for a 54-hour weekend.
During the following weekend, crews will install a new fish-passable culvert at Rolling Hills Creek. The installation schedule is designed to minimize driver impact with traffic diverted around the work zone, requiring minimal weekend around the clock closures. However, in order to install the western half of the culvert, crews will close southbound SR 167 for one full weekend.
Performing this work in two separate weekends provides increased safety for construction crews and drivers. Paving during an around-the-clock 54-hour weekend closure helps to ensure higher quality outcomes when compared to work performed during the short work windows provided by nightly closures adjacent to live traffic.
August 24 to August 27 Closure
Weekend Closure of Southbound SR 167 – Stage 3 of Fish Passage Construction
During this final stage, from 8:30 p.m. Friday, Aug. 24 to 5 a.m. Monday, Aug. 27, crews will fully close:
- all lanes of southbound SR 167 between the I-405 interchange and South 180th Street
- the northbound I-405 ramp to southbound SR 167
- the southbound I-405 ramp to southbound SR 167
- the southbound SR 167 ramp to northbound I-405
Over the weekend, crews plan to:
- install the west half of the Rolling Hills Creek 195-foot-long fish-passable culvert that crosses under the southbound lanes of SR 167
- pave on southbound SR 167
- restripe on southbound SR 167
- install sign structures
Detour Options
Drivers driving northbound I-405 will have two detour options:
- Option 1: Take Exit 1 for southbound SR 181/ W Valley Hwy, take a right onto southbound SR 181 and follow detour signs to South 212th Street. Make a left turn onto South 212th Street and follow detour signs to merge onto southbound SR 167.
- Option 2: Take the SR 169/SR 900 exit and make a right turn onto SR 169. From there, take the on-ramp to southbound I-405 and follow the detour signs to the Rainier Ave exit. Make a left turn on Southwest 7th Street, turn left on Lind Ave Southwest, turn left onto Southwest 41st St. and from there merge onto southbound SR 167.
Drivers driving southbound I-405
- Take the Rainier Ave South exit. Make a left turn on Southwest 7th Street, left turn on Lind Ave Southwest, left onto Southwest 41st St. and from there merge onto southbound SR 167.
Drivers driving westbound on Southwest Grady Way
- Follow detour signs to Lind Ave Southwest. Make a left turn on Lind Ave Southwest, left onto Southwest 41st St. and from there merge onto southbound SR 167.
- Drivers driving southbound direction of Rainier Ave South
- Make a right turn onto Southwest Grady Way. Make a left turn on Lind Ave Southwest, turn left onto Southwest 41st St. and from there merge onto southbound SR 167.
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