Jackknifed semi-truck collides with barrier on SB I-5, 2 lanes reopened

Two lanes have reopened on southbound I-5 near milepost 103 in Olympia after a jackknifed semi-truck lost control around a curve and collided with a concrete barrier.

At 11:30 a.m., the left and center lanes on SB I-5 were reopened. The right lane remains closed as crews work. Lengthy backups are expected in Olympia and Lacey as traffic continues to clear.

The left and center lanes are now open on SB I-5 in Olympia. The right lane remains closed while crews wrap up work. Expect lengthy backups in Olympia and Lacey until traffic clears. Real time traffic info https://t.co/HUGa1WTJfY pic.twitter.com/soqiCZgcq3

— WSDOT Tacoma (@wsdot_tacoma) October 24, 2025

At approximately 11:20 a.m., the semi-truck was removed from the concrete barrier and is currently being removed from SB I-5. Crews will now clean up the roadway of remaining debris. All lanes continue to be blocked.

The semi is off the barrier and is being removed from SB I-5 in Olympia. Next, our crews will cleanup the spilled fuel and remaining debris on the road. The road remains blocked while we work to finish our response. Traffic continues to be detoured at 2nd Ave./Exit 103. pic.twitter.com/GVrAVH103X

— WSDOT Tacoma (@wsdot_tacoma) October 24, 2025

At 10:51 a.m., two tow trucks arrived to remove the semi-truck from the concrete barrier. All lanes remain blocked, and traffic is being diverted to exit 103.

Officials advised travelers to take the northbound exit at US 101 and turn around at Black Lake Blvd. or Mud Bay Rd. while traffic is detoured.

We’ve got two tows working to remove this crashed semi from the barrier on SB I-5 in Olympia. All lanes are blocked. Traffic is detoured at 2nd Ave/Exit 103. While traffic is detoured, it might be easier to exit at NB US 101 and turn around at Black Lake Blvd. or Mud Bay Rd. pic.twitter.com/kchWHH3Nns

— WSDOT Tacoma (@wsdot_tacoma) October 24, 2025

The Washington State Department of Transportation (WSDOT) mentioned there will be lengthy delays while the semi-truck is extracted from the concrete barrier.

WSDOT advised using alternate routes or delaying travel until the road is reopened.

At 9:41 a.m., WSDOT provided an update advising drivers to use the Mud Bay Road exit to turn around as the Crosby Blvd. and Black Lake Blvd. exits are heavily congested.

Here’s a look at the semi truck crash on SB I-5 in Olympia. All lanes are blocked. Traffic is detoured to NB US 101. Expect congestion on US 101 ramps in Olympia as folks turn around. Crosby Blvd. and Black Lake Blvd. exits are packed, consider Mud Bay Rd. exit to turn around. pic.twitter.com/TznfqZ4ZSC

— WSDOT Tacoma (@wsdot_tacoma) October 24, 2025

The semi-truck had two unloaded trailers and lost control around a curve due to wet conditions, eventually colliding with a concrete barrier separating the north and southbound lanes.

Traffic is currently getting past the collision on the shoulder. Once a tow truck makes it through the traffic, the detour will resume.

Here’s a look at SB I-5 near US 101 in Tumwater. All southbound lanes are blocked. Traffic getting by on the shoulder. This will take a lot of time to clear. Delay your travels if possible and expect northbound congestion from the distraction. pic.twitter.com/O00rLzwA8y

— WSDOT Tacoma (@wsdot_tacoma) October 24, 2025

Semi-truck on SB I-5 collides with concrete barrier

At approximately 9:19 a.m., Washington State Patrol (WSP) Trooper Kameron Watts confirmed on social media that traffic is being diverted to northbound US 101.

Trooper Watts advised travelers to be patient, as a lengthy delay is expected.

The semi-truck had two unloaded trailers and lost control while going around a curve in the wet roadway.
It collided into the concrete barrier separating the north and southbound lanes. Troopers and DOT crews are trying to clear the road ASAP.
-DS pic.twitter.com/9LpAo7sfW7

— Trooper Kameron Watts (@wspd1pio) October 24, 2025

No injuries have been reported.

WSP and WSDOT crews are actively trying to clear the roadway.

This is a developing story, check back for updates

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