Southbound traffic on Interstate 5 in Vancouver came to a sudden standstill Saturday evening after police responded to an armed standoff near Mill Plain Boulevard. Vancouver officers said a man believed to be armed refused to leave his apartment, prompting a SWAT response. Washington State Police shut down the southbound lanes while officers worked the scene, and drivers were told to brace for detours and delays.
Vancouver Police spokesperson Kim Kapp told KATU the suspect "is believed to be armed and refusing to come out of his apartment." Kapp said a SWAT team "is assisting to make contact with him," and that Washington State Police shut down southbound I-5 "while police are working on this." Officers warned drivers to expect detours and delays in the area, the station reported.
Traffic impact
Once the southbound lanes were blocked, congestion stacked up fast, snarling the Portland-Vancouver commute. Drivers were urged to steer clear of the stretch near Mill Plain if they could and to build extra time into their trips. For live travel conditions and detour details, check WSDOT traffic alerts or local traffic feeds before heading out.
What authorities say
Vancouver Police initially posted that "traffic may be detoured while officers remain on scene," according to KATU. The station reported that its crews were on the way to the neighborhood as the situation unfolded. Authorities have not released the suspect's name or any additional details about possible charges.
Why this stretch matters
The area near the Mill Plain offramp has been a repeat trouble spot for I-5 shutdowns, including flooding and other incidents that have slowed southbound traffic in recent months. The I-5 flood zone near Mill Plain has triggered travel advisories before, which helps explain why authorities move quickly to close the freeway when a scene threatens safety.
This remains a developing situation. Updates are expected as Vancouver Police and the Washington State Patrol release more information. Until the scene is cleared, drivers are advised to follow posted detours and avoid the area.
