McLoughlin Blvd/Highway 99E in Milwaukie closes Aug. 16-19 for light rail construction


Construction requires detours; access to businesses maintained

Construction of the Portland-Milwaukie Light Rail Transit Project requires a weekend closure of McLoughlin Blvd/Hwy 99E near downtown Milwaukie from 10 p.m. Friday, August 16 to 5 a.m. Monday, August 19. Work will occur 24/7 to allow for the shortest closure period. Construction outside regular hours is approved under a City of Milwaukie noise variance.

McLoughlin Blvd will be closed between SE Washington Street and River Road to allow construction crews to place six large steel girders over McLoughlin Blvd/Hwy 99E for a portion of the Kellogg Bridge. The Kellogg Bridge will carry light rail from downtown Milwaukie over Kellogg Lake, McLoughlin/Hwy 99E and residential streets before returning to grade south of River Road.

The portion of the bridge that crosses Kellogg Lake will include a new bike and pedestrian crossing that the Oregon Department of Transportation, the City of Milwaukie and TriMet have worked together to include a multi-use path on the bridge. The path will make it possible for residents in Milwaukie’s Island Station neighborhood to walk or bike directly to downtown Milwaukie from McLoughlin Boulevard, providing them with a new, safer and faster connection.

Detours Information
Local access to businesses and residences within the area will be maintained at all times. For specific detour information and maps, visit

  • McLoughlin will be open for local access only between SE River Road/Bluebird Street and Park Avenue, and between SE Harrison and Washington streets.
  • TriMet bus line 33-McLoughlin will be rerouted to Oatfield Road via Park Avenue and Lake Road. Riders should plan extra travel time due to traffic delays.

Construction sequencing
Friday daytime: Traffic control crews will install approximately 80 detour signs (turned away from drivers), and as the closure occurs, the signs will be turned around and orange barriers put in place. For the weekend, it’s expected that 25+ flaggers will be on site helping to direct traffic around the work zone.

Friday evening: Set up temporary scaffolding/tower that the steel girders will sit on.

Move two cranes into place—it takes two cranes to lift each of the six girder segments into place during the McLoughlin closure.

Each lift takes 10-15 minutes, but could take up to six hours to secure in place.

Each girder has 80 pre-drilled holes for bolts to secure girders together. The complexity is in getting the bolt holes lined up as some of the steel is curved, and depending on the temperature, the steel can expand or contract.

The girders are fabricated by American Bridge Manufacturers based in Reedsport, Oregon. Girders will be delivered on site as needed. If there are high winds and extreme high temperatures, the work may be delayed.

80 bolt holes per connection adds up to 640 bolt hole connections (connects the six girders, plus connect to girders on either end of the work zone).

After the last girder is secured in place, temporary scaffolding is removed (takes 2-4 hours) and McLoughlin expected to re-open at 5 a.m. on Monday, Aug. 19.

One-third of the Kellogg Bridge girders are in place (over Kellogg Lake). The Aug. 16-19 work extends the girders between Bluebird to north of River Road over McLoughlin Blvd.

Construction crew size: up to 20 workers on site.

Business support
TriMet works to minimize construction impact on local businesses by:

  • Expediting construction
  • Maintaining access to local businesses
  • Creating “Open for Business” signs, as well as creating an “Open For Business” web page listing for affected Milwaukie and Oak Grove businesses, their addresses, hours of business and contact information at
  • Providing construction updates
  • Staffed 24-hour construction hotline at 503-962-2222

About the Portland-Milwaukie Light Rail Transit Project
The 7.3-mile project is the region’s sixth MAX construction project to be built and extends from the terminus of the MAX Green and Yellow lines at Portland State University in Downtown Portland to South Waterfront, SE Portland, Milwaukie and North Clackamas County.

About the project:

  • 7.3 miles
  • 10 stations
  • The first of its kind multi-modal bridge over the Willamette River that will carry light rail, buses, bikes, pedestrians and a future Portland Streetcar extension, but no private vehicles.
  • Opens Saturday, Sept. 12, 2015
  • Expands the MAX system to 60 miles and 97 stations

Project partners
The Federal Transit Administration, State of Oregon, Clackamas County, Metro, City of Milwaukie, Multnomah County, City of Oregon City, Oregon Department of Transportation, City of Portland, Portland Development Commission and TriMet.