The Morrison Bridge will be closed for 20 minutes at 2 pm on Wednesday, April 26 and from 8 pm Thursday, April 27 until as late as 5 am on Friday, April 28 for lift span repair work.
The west leaf of the drawbridge will be in the open position during the Wednesday closure, to allow a contractor to remove parts from the lift span. During the Thursday night closure the contractor will complete a jacking procedure to support the east leaf counterweight (which weighs 950 tons or 1.9 million pounds). The counterweight will be supported by jacks while the contractor installs new parts to support added weight on the new deck and counterweight.
The closures will impact motor vehicles, bicyclists and pedestrians. The bridge will reopen earlier, if work is completed ahead of schedule.
On Thursday night, the ramps between the bridge and Interstate 5 and Interstate 84 will be closed, except for the ramp from the Morrison Bridge westbound to I-5 north. Motorists can access I-84 eastbound at NE Grand Avenue and NE Everett Street.
To access downtown Portland from the freeways during the closure, I-5 southbound drivers can exit at the Rose Quarter/Broadway Bridge and I-84 westbound drivers can exit at Rose Quarter/Weidler exits. I-5 south traffic can access the onramp to Highway 99E/U.S. 26.
The deck on the east leaf of the lift span will be removed in May. The Morrison Bridge lift span deck will be replaced by the end of October 2017. Multnomah County maintains the Morrison Bridge and five other Willamette River bridges. For more information, visit www.multco.us/bridges or follow @MultcoBridges on Twitter.