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Salmon Creek Interchange Project - Fall 2013 Changes

As we move into fall, drivers will see several changes at the I-5/I-205 junction in Salmon Creek.

In September, crews will start tying together several new features of the Northeast 139th Street interchange. Several of the project's next steps will impact traffic and change the way drivers travel through Salmon Creek. This page will be updated throughout construction.

Here's a look at what is planned for this fall. 

Download and print overview of all changes (pdf, 792 kb)
Download and print details for steps 1 and 2 (pdf, 779 kb)
Salmon Creek Interchange Project 
Read a summary of work activities and traffic impacts for each step:
Step 1 | Step 2 Step 3 | Step 4 

1. September 19: Open new on-ramp from Northeast 139th Street to northbound I-5

  • WHAT AND WHY: We’re opening a new ramp that will connect NE 139th St. to northbound I-5. We need to remove the existing on-ramp to make room for the interchange, and the new ramp will allow drivers to continue accessing northbound I-5 during the remainder of interchange construction.
  • THE BIG PICTURE: As part of the larger interchange project, relocating the ramp will help alleviate congestion on NE 134th St.
  • TRAFFIC IMPACT: We’re essentially relocating interstate access for northbound traffic, which changes the way drivers connect to northbound I-5. Expect delays on NE 134th St. and NE 20th Ave. until the NE 139th St. interchange opens to traffic in 2014.
  • SCHEDULE: The northbound I-5 on-ramp will move from NE 134th St. to NE 139th St. on September 19. Traffic impacts are expected to last until the interchange is fully open to drivers in 2014. This work is weather dependent and may be rescheduled in the event of inclement weather.

MAP: New I-5 On-ramp   I-5 Ramp Changes

Starting Sept. 19, drivers will use NE 139th St. to access northbound I-5. Expect delays on NE 134th St. and NE 20th Ave.

2. September 24-29: Demolish the existing on-ramp from Northeast 134th Street to northbound I-5

  • WHAT AND WHY: We’re removing the existing northbound I-5 on-ramp because it sits directly in the path of the new interchange bridge. The ramp needs to be removed so crews can complete construction on the new interchange.
  • THE BIG PICTURE: Removing this ramp eliminates one of the left turn signals on NE 134th St., helping reduce traffic congestion on the corridor.
  • TRAFFIC IMPACT: Drivers will see a series of nighttime closures on I-205 between NE 134th St. and I-5 while crews demolish the existing on-ramp, which crosses over the I-205 roadway. Expect delays and plan detour routes.
  • Monday, Sept. 23: Both directions of I-205 closed from 10 p.m. to 5 a.m.
  • Tuesday, Sept. 24: Both directions of I-205 closed from 10 p.m. to 5 a.m.
  • Wednesday, Sept. 25: Both directions of I-205 closed from 10 p.m. to 5 a.m.
  • Thursday, Sept. 26: Northbound I-205 closed from 10 p.m. to 5 a.m.
  • Friday, Sept. 27: CLOSURE CANCELLED - I-205 fully open
  • Saturday, Sept. 28: Both directions of I-205 closed from 10 p.m. Saturday to 10 a.m. Sunday

DETOUR MAPI-205 Detour Map

Through traffic: Use SR 14 and I-5 to detour around the closure. Local traffic will be able to use I-205 to access SR 500, Padden Parkway and other local interchanges.

3. Shift I-205 east and lower the roadway 

  • WHY? Crews will shift northbound I-205 40 feet to the east to make room for the final bridge pier. Crews will also lower the roadway 8 feet to make sure there is 16 feet of clearance under the new bridge.
  • THE BIG PICTURE: The realignment is one piece of the larger congestion relief project.
  • TRAFFIC IMPACT: I-205 drivers will see daytime lane closures and traffic shifts.

4. Complete new Northeast 139th Street interchange

  • WHY? Completing the interchange is the last step of this four-year, multi-phase construction project.
  • THE BIG PICTURE: The NE 139th St. bridge will give drivers another option to cross the I-5/I-205 junction, and is the keystone piece of the $133 million congestion relief project.
  • TRAFFIC IMPACT: Faster and safer trips, fewer backups and smoother connections to I-5 and I-205.