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The USGSs has upgraded the earthquake detection devices on the Marquam Bridge in Portland.   Jim Smith, with the USGS, says they were originally installed during the seismic retrofit in 1995. When a large quake hits the devices will record how the bridge is affected. The data will be used to determine how the Marquam Bridge survives the quake and also how to design future bridges that are more earthquake resistant.

 

 

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  • Click on the link for the latest conditions on the mountain passes.
  • Roundabout at intersection of NW Shevlin Park Road and NW Mt. Washington Drive for roundabout reconstruction, road closure with detours, 5/13/19 - 6/27/19.
  • SE Cessna Drive between SE Piper Drive and SE Craven Road for waterline installation, road closure with detour, 5/20/19 – 6/6/19.
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  • Brosterhous Road between American Lane and Jacklight Lane for sewer main installation, southbound lane closures with detours, until 7/15/19.
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