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Construction

Keeping you moving throughout construction

Construction crews will shift traffic in stages to build the project. Each traffic shift will last for several months while crews remove existing infrastructure and build new features. Three travel lanes on both directions of I-5 will be maintained, and bike and pedestrian detours will be clearly marked. The first traffic stage is shown below and is subject to change:

Stage 1: summer 2023 – spring 2024

  • Shift the northbound on- and off-ramps at exit 119 to temporary pavement.
  • Shift northbound I-5 lanes to accommodate the construction zone and begin construction on the new I-5 bridge over Pendleton Avenue.
  • Begin building the roundabout and roadway to the new bridge over I-5.

Shifting travel lanes into temporary configurations gives construction crews the room they need to widen I-5 and extend the existing HOV lanes and build a new Steilacoom-DuPont Road interchange. It will also prepare the area for the construction of the I-5 bridge over Pendleton Avenue and the road connecting the future roundabout and reconstructed I-5 interchange.

Map showing how three lanes of northbound I-5 will be maintained at Steilacoom-DuPont Road. The off-ramp will be shifted left to accommodate the work zone on the right
Three lanes of northbound I-5 will be maintained at Steilacoom-DuPont Road. The off-ramp will be
shifted left to accommodate the work zone on the right.
Map showing how Three lanes of northbound I-5 approaching Pendleton Avenue will be open and shifted left toward the median as crews work on the right side
Three lanes of northbound I-5 approaching Pendleton Avenue will be open and shifted left toward the median as crews work on the right side. A temporary on-ramp from Steilacoom-DuPont Road will be open. By the end of the project, the entire I-5 overpass at Pendleton Avenue will be rebuilt to provide additional clearance for
vehicles traveling on Pendleton Avenue.
Map showing how the new roundabout will connect to the new Steilacoom-DuPont overpass and on- and off-ramps to and from I-5
The new roundabout will connect to the new Steilacoom-DuPont overpass and on- and off-ramps to and from I-5. The work zone will border the north and west sides of the Barksdale Station business plaza. Once complete, the roundabout will improve access between the interstate and areas like DuPont, Steilacoom and Anderson Island.

What’s next

As construction progresses, this online open house will be updated to provide more information about upcoming changes in the area including:

  • Project milestones such as setting girders on new bridges.
  • New roundabout opening in fall 2025, subject to change.
  • Removal of the old overpass in early 2026, subject to change.
  • Opening of extended HOV lanes.

Please help keep road workers safe. When approaching a work zone, remember to:

  • Slow down – drive the posted speeds, they are there for your safety. 
  • Be kind – our workers are out there helping to keep you safe and improve the roadways. 
  • Pay attention – both to workers directing you and surrounding traffic; put your phone down when behind the wheel. 
  • Stay calm – expect delays, leave early; no meeting or appointment is worth risking someone’s life.