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Tag: Sellwood Bridge
Roadbuilding
Three bridges receive Slag Cement Association awards
Nine outstanding construction projects that used slag cement received 2017 Project of the Year Awards from the Slag Cement Association (SCA) during the American Concrete Institute’s 2018 Spring Convention in Salt Lake City. Each project was selected by the SCA’s Technical Marketing Committee because of its exemplary and innovative uses of slag cement in concrete […]
April 13, 2018
Roadbuilding
How crews removed Portland’s old Sellwood Bridge in one piece
The time-lapse video below shows Portland’s old Sellwood Bridge, which was built in 1925, being moved to temporary supports on January 19, 2013, so that a new bridge could be constructed in its place. You can view another time-lapse of the new bridge construction here. Omega Morgan was the company hired to move the 3,400-ton truss bridge, […]
June 16, 2016
Roadbuilding
Time-lapse chronicles first 5 years of Portland’s Sellwood Bridge construction
Since 2011, Multnomah County, Oregon, has been working to replace the Sellwood Bridge, a historic span in the Portland area that opened in 1925. The time-lapse video below chronicles the first five years of construction of the new Sellwood Bridge. The project replaces the 90-year-old, 300-foot span with a 1,976-foot steel arch design that is […]
June 14, 2016
Roadbuilding
Portland engineers use dish soap to move century-old bridge
Engineers in Portland, Oregon, had to get creative when they needed to replace the Sellwood Bridge. Cracks had begun to appear in the support beams of the 100-year-old bridge, and, as our sister site, Equipment World, reported, the structure’s unique design forced the engineers to move the bridge in one whole 1,100-foot piece. The engineers […]
July 10, 2013
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How to move a bridge with dish soap
When cracks began to form in the Sellwood Bridge’s supports, engineers in Portland, Oregon were faced with an extreme challenge when it came to replacing the nearly century-old bridge: they had to move the whole thing at once. According to Popular Mechanics, the engineers wanted to slide the existing bridge over a bit to create […]
July 3, 2013
Roadbuilding
Slip Slidin’ Away
Big, heavy, Oregon bridge makes an innovative move.
February 5, 2013
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