Local Information

UPDATE: Weight and lane restrictions for SR 25-Columbia River Bridge at Northport

Thursday, January 5, 2017 - 13:05

UPDATE, January 12, 2017: SR 25 is reduced to one lane, alternating traffic, 24 hours per day until further notice.    Traffic is controlled by a temporary signal system.  Expect delays.  Legal loads of up to 105,500 lbs. are allowed.  No over weight or wide loads allowed.  (Note:  A previous restriction of 10,000 lbs has been lifted.)

Al Gilson, Communications, 509-324-6015

NORTHPORT – Bridge inspections by Washington State Department of Transportation bridge engineers revealed extensive corrosion on the State Route 25 bridge that crosses the Columbia River at Northport.

SR 25 is reduced to one lane, alternating traffic, 24 hours per day until further notice.    Traffic is controlled by a temporary signal system.  Expect delays.  Legal loads of up to 105,500 lbs. are allowed.  No over weight or wide loads allowed.  (Note:  A previous restriction of 10,000 lbs has been lifted.)

Drivers can expect long delays.. Real-time traffic information about this closure will be posted on the WSDOT mobile app, and on the Travel Alerts webpage.

An in-depth review and assessment in December indicated that heavy rust has penetrated large bolts that provide the connection of the steel trusses to the piers at the north and south ends of the span and weight restrictions would be needed.

“We were surprised at the depth of corrosion we found within these bolts during our inspection,” said Bridge Preservation Engineer Harvey Coffman.

Next steps

Bridge engineers at WSDOT headquarters in Olympia have designed a temporary counter balance to reduce the stress on the bolts while plans and specifications for permanent repairs can be formulated. It may take up to six months for the repairs to be completed. No cost estimates are available at this time.

The 1,500 foot-long, steel-truss bridge was constructed in 1948. Located just 5 miles south of the US/Canada border, about 500-800 vehicles use the bridge every day with trucks comprising around 40 percent of that total.

Get Our Mobile App

  • Our Android and iPhone apps include statewide traffic cameras, travel alerts, mountain pass reports, ferry schedules and alerts, northbound Canadian border wait times and more.