Sunday Marathon will impact downtown bridges

The Portland Marathon on Sunday, October 3 will impact traffic on several Willamette River bridges maintained by Multnomah County:

Broadway Bridge: The bridge will be closed to all motor vehicles, including TriMet buses and Portland Streetcar, from 6:30 a.m. to 9 a.m. TriMet’s 17 bus line will detour to the Steel Bridge. Sidewalks will remain open for bicyclists and pedestrians. Drivers can use the Steel or Fremont bridges during the closure. For information on Portland Streetcar service changes, visit

Burnside Bridge: The north sidewalk, bike lane, and outside westbound lane will remain closed from 7:30 a.m. to 1:30 p.m.  TriMet bus routes 12 and 19 detour to Steel Bridge. Bus route 20 detours to Hawthorne Bridge.

Morrison Bridge: The onramp from SW Naito Parkway to the bridge will be closed, along with the south shared use path on the bridge and the offramp to SE Water Ave. from 12 p.m. to 2 p.m. All traffic lanes on the bridge will remain open, along with the north sidewalk. TriMet bus route 15 detours to Steel Bridge.

Sellwood Bridge: The north sidewalk and westbound lane will be closed from 6:30 a.m. to 10:45 a.m. The south sidewalk and eastbound lane will remain open. Westbound drivers can use the Ross Island Bridge as an alternate route.

The lift spans of the Broadway and Burnside bridges will not open for river traffic from 6:30 a.m. to 2 p.m.

Multnomah County maintains the Broadway, Burnside, Morrison and Sellwood bridges and 269 miles of roads. For bridge information, visit For TriMet bus re-routes, visit For event information, visit

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