By: Angela Webber//December 27, 2011//
Angela Webber//December 27, 2011//
It’s been one year since TriMet received an official Federal Transit Administration “go-ahead” for the Portland-Milwaukie Light Rail project, and now construction is happening on the city’s first new Willamette River Bridge in over 40 years.
Last wek, crews under project prime contractor prepared a rebar cage where the first of six concrete pillars will be poured to support one of the bridge’s main towers. Work to drill the first shaft down to the hard rock known as the “Troutdale Formation” was recently completed.
The rebar cage and concrete pour is part of the “next phase” of the light rail bridge’s construction: this summer, crews conducted the in-water work of building cofferdams or “tubs” that will isolate the bridge construction work from the water, so that fish habitats are not disturbed during critical times. The entire bridge is expected to be finished in 2015, in time to hook up to the 7.3-mile Portland-Milwaukie light rail line.