Travelers should check TripCheck.com for real-time traffic updates.



Nearby Traffic Impacts



The northbound span of the Interstate Bridge will now close from September 19–27, 2020 as crews replace mechanical parts that help lift and lower the bridge. Heavy traffic, congestion and long delays are expected in the region on I-5, I-205, I-84, SR 14 and local streets in north Portland and south Vancouver. After the nine-day closure, travelers will experience a single lane closure on I-5 south at the Interstate Bridge Sept. 28–Oct. 4, 2020 as construction crews remove equipment from the area and wrap up the project. Find more details about the bridge closure here.



as crews replace mechanical parts that help lift and lower the bridge. After the nine-day closure, travelers will experience a single lane closure on I-5 south at the Interstate Bridge Sept. 28–Oct. 4, 2020 as construction crews remove equipment from the area and wrap up the project. Find more details about the bridge closure here. The Portland Bureau of Transportation is constructing a new active pedestrian and bicycle bridge over I‐405 at NW Flanders Street. A weekend closure of I-405 is expected this fall. For more information on impacts and schedule, visit their project website.​



Visit the weekly construction update for Portland metro area construction information one week in advance.​



General Traffic Impact Information

This work will impact traffic on multiple freeways including I-405, U.S. 30, I-5 and U.S. 26. The closures (shown on the maps below) are needed to maintain a safe work zone for the traveling public and construction staff. Significant traffic delays and congestion are expected.

Traffic impacts:

Nighttime single and double lane closures throughout the project area.

and throughout the project area. Weekend daytime single lane closures throughout the project area.

Nighttime and around-the-clock weekend closures, lasting until 10 a.m. Mondays, of on- and off-ramps (detailed on map below).

lasting until 10 a.m. Mondays, of on- and off-ramps (detailed on map below). Full 24/7 closures of U.S. 30 east to I-405 north (18 days) and U.S. 30 east to I-405 south (11 days).

of to (18 days) and to (11 days). Closures of sidewalks, lanes and parking on local roads under I-405.​



Ramp and Lane Closures *

Multiple weekend and overnight closures of on- and off-ramps and lanes will take place during construction. At times, multiple lanes on I-405 may close, leaving freeway traffic to share one lane in some sections.

Approximately 25 weekend closures of on- and off-ramps and lanes are expected in the project area, along with frequent nighttime closures of each ramp. Night work is needed in order to minimize traffic impacts during the day.

Around-the-clock weekend closures will start as early as 8 p.m. on Fridays and will end by 10 a.m. on Mondays for each of the ramps shown. Multiple on- and off-ramp closures may happen at the same time. Dates for each weekend closure will be posted on this website in advance.

During construction, local roads, sidewalks and some parking spots under the elevated parts of I-405 may close when work occurs overhead. Drivers can follow signed detours. Sidewalk detours will be signed and accessible to people with disabilities.