Drivers in Burien should prepare for continued SR 509 lane and ramp closures this week, as work will restrict traffic through the morning of Sunday, Sept. 14, according to the Washington State Department of Transportation (WSDOT).
This work will also affect roads in Des Moines, SeaTac, and Kent.
WSDOT said that ramp closures on I-5 will allow crews to install signage and stripe the road.
The lane and ramp closures on SR 516 will allow crews to pave the road.
The SR 509 ramp closures will allow crews to install signage and perform paving work.
This work is part of the SR 509 Completion Project.
I-5 ramp closure information
Monday, Sept. 8 through the morning of Wednesday, Sept. 10:
- 11:30 p.m. to 4 a.m. – The southbound I-5 exit to SR 516 will close nightly. A signed detour will be in place.
Wednesday, Sept. 10 through the morning of Thursday, Sept. 11:
- 9:30 p.m. to 3:30 a.m. – The northbound I-5 exit to SR 516 will close overnight. A signed detour will be in place.
Saturday, Sept. 13 through the morning of Sunday, Sept. 14:
- 9:30 p.m. to 3:30 a.m. – The northbound I-5 exit to SR 516 will close overnight. A signed detour will be in place.
SR 516 lane closure information
Monday, Sept. 8 through the morning of Thursday, Sept. 11:
- 8 p.m. to 5 a.m. – One lane of westbound SR 516 will close nightly between Military Road South and SR 99.
SR 516 ramp closure information
Wednesday, Sept. 10 through the morning of Thursday, Sept. 11:
- 11:59 p.m. to 2:30 a.m. – The eastbound SR 516 ramp to northbound I-5 will close overnight. A signed detour will be in place.
Wednesday, Sept. 10 through the morning of Friday, Sept. 12:
- 11 p.m. to 3:30 a.m. – The westbound SR 516 ramp to northbound I-5 will close nightly. A signed detour will be in place.
- 11:59 p.m. to 5 a.m. –The SR 516 ramp to southbound I-5 will close nightly. A signed detour will be in place.
SR 509 ramp closure information
Monday, Sept. 8 through the morning of Wednesday, Sept. 10:
- 10 p.m. to 11:59 p.m. – The southbound SR 509 exit to South 188th Street will close nightly.
- 10:30 p.m. to 4 a.m. – The 24th Avenue South on-ramp to southbound SR 509 will close nightly. A signed detour will be in place.
Monday, Sept. 8 through the morning of Thursday, Sept. 11:
- 10 p.m. to 5 a.m. – The northbound SR 509 exit to South 160th Street will close nightly.
Friday, Sept. 12 through the morning of Saturday, Sept. 13:
- 9 p.m. to 5 a.m. – The South 160th Street on-ramp to southbound SR 509 will close overnight.
- 11:59 p.m. to 5 a.m. – The southbound SR 509 exit to South 160th Street will close overnight.
SR 509 Completion Project information
The SR 509 Completion Project builds 3 miles of new tolled highway between I-5 and South 188th Street near the south end of Seattle-Tacoma International Airport. The new highway will be completed in stages. The portion between I-5 and 24th Avenue South opened on June 28 and a new tunnel under I-5 at the SR 516 interchange opened on July 16. The final stage builds the remaining 2 miles of the expressway between 24th Avenue South and South 188th Street. The entire project is planned for completion by 2029.
Puget Sound Gateway Program overview
The SR 509 Completion Project is part of WSDOT’s Puget Sound Gateway Program, which also includes the SR 167 Completion Project in Pierce County. Together, the two completion projects finish critical missing links in Washington’s highway and freight network.
