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News release
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I-5 Interstate Bridge
Trunnion Replacement
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Oct. 1, 2020
The lane re-opened early Thursday as the bridge project winds down
The I-5 Interstate Bridge Trunnion Replacement Project is in its final phase, which is good news for commuters, many of whom changed their travel habits during the project.
Crews reopened the southbound right lane over the Interstate Bridge early Thursday. It closed late last Friday night when the northbound span re-opened for crews to reconnect the median barrier
Traffic impacts continue and travelers should expect:
- Nighttime single and double lane closures in both directions of I-5 as well as nighttime ramp closures between 8 p.m. and 5 a.m. into October. In addition, intermittent short-term nighttime bridge closures may be needed while crews remove falsework.
- The sidewalk on the northbound span will remain closed through Sunday, Oct. 4. Bike and pedestrian travelers crossing the bridge in both directions will share the sidewalk on the southbound span.
- The speed limit will be restored to 50 mph Thursday but the area is still a work zone. Drive safely and remember, fines in work zones double whether workers are present or not.
Know before you go: You can view real-time traffic conditions and road cameras on TripCheck.com in Oregon and wsdot.com/traffic/trafficalerts in Washington.
 The installation of the new trunnions and the sheaves that house them are complete. Leaving behind the most significant impacts of the project.
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Learn more
- Visit our Flickr for video and photos.
About the project
The 103-year-old northbound span closed while crews replaced mechanical parts that help lift and lower the bridge. The Interstate Bridge carries I-5 across the Columbia River between Oregon and Washington.
About the bridge
The Interstate Bridge is jointly owned by Oregon and Washington and is maintained and operated by ODOT. The two states are sharing the $13 million cost of this project. The northbound span opened in 1917 and the southbound span in 1958.
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For ADA Title II or Civil Rights Title VI accommodations, translation/interpretation services or for additional information call 503-731-4128, TTY (800) 735-2900 or use the statewide Oregon Relay Service: 7-1-1.
¿Habla usted español? Podemos proveer la información en esta publicación en español. Para recibir la información en español, por favor llamé al (503) 731-4128.
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