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Construction will cause weekend and night lane closures on busy interstate in Troutdale

The Oregon Department of Transportation (ODOT) is replacing two aging bridges on Interstate 84 over Graham Road in Troutdale, along with reconstructing the Graham Road underpass.

The state transportation agency is replacing the two bridges because of the overpasses' poor condition, said Don Hamilton, ODOT Public Information Officer.

"The most important aspect of this was that it was old. It was crumbling and (the bridges) needed to be replaced," Hamilton said.STAFF PHOTO: MATT DEBOW - Oregon Department of Transportation is reconstructing the I-84 Graham Road overpasses to a height of 17 feet to make clearance safer for commercial vehicles.

The bridges, which are 60- and 70-years old, carry approximately 25,000 cars over I-84 each day. ODOT is predicting the number of commuters to increase significantly in the coming years.

Construction will require periodic lane closures on I-84 from 10 p.m. to 5:30 a.m. on weeknights and 10 p.m. to 8 a.m. on weekends. ODOT began closing the lanes this month, and the temporary lane closures are expected to end by summer 2020.

ODOT is raising the height of the bridges to 17 feet from 14 feet to accommodate for an expected increase in commercial semi-truck travel on Graham Road.

A 14-foot clearance is not safe for large vehicles to clear the underpass, Hamilton said. The growth in truck travel is expected because of the September 2018 opening of the Amazon distribution facility at 1250, N.W. Swigert Way, Troutdale.

Graham Road is a main thoroughfare leading to the Amazon facility. Along with the commercial truck traffic, ODOT also expects to see an increase in employee commuter traffic from Amazon and other industrial developments north of I-84. ODOT will add a third lane to the current two-lane Graham Road to compensate for the expected boom in traffic.

For more information about construction, visit

Expected construction schedule

n Construction began February 2019.

n The Westbound I-84 Bridge improvements are expected to be completed in fall 2019.

n Eastbound I-84 Bridge improvements are expected to be completed in summer 2020.

n Graham Road improvements are expected to be completed in fall 2020.

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