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Delays anticipated on U.S. Highway 12 Dike Bypass for railroad track removal

ITD l Mark Pfeifer

LEWISTON – Motorists should anticipate delays on U.S. Highway 12 Dike Bypass beginning Monday, July 24 as contractors are scheduled to remove railroad tracks by the levee that cross US-12. The tracks are no longer operational, and the remaining sections will therefore be removed. Work should be completed by late August.


The old tracks will be extracted at three locations:

  • D Street at Sonoco
  • East side of the Blue Bridge along Snake River Avenue to Dike Bypass Loop
  • Crossing on Snake River Avenue at H Street.

Parts of D Street and the section of Snake River Avenue between Main Street and the Dike Bypass (near the Blue Bridge) will be temporarily closed during construction. Traffic delays, detours and lane shifts should be anticipated during the day from 7 a.m. to 5 p.m. at all locations.

Railroad tracks, signals and gates are planned for removal on US-12 near the east of end of the Blue Bridge. The structures and track are anticipated to be dismantled during a series of night closures starting August 7 and completed by August 11 from 9 pm to 5 am to lessen the impact to the traveling public. Motorists can expect detours using Southway Bridge and/or Red Wolf Bridge.

Pedestrian detours will be in place as crews extend the sidewalk and remove curbs. Remaining gaps in the pavement will be filled and resurfaced near the Blue Bridge where the sidewalk and curb connect. These enhancements will result in improved traveling surfaces for both pedestrians and motor vehicles.

We appreciate the public’s patience and cooperation during this important infrastructure improvement project.

To receive continual updates about weather-related road conditions, road work, commercial vehicle restrictions, road closures, and other travel please visit Idaho 511. Access it 24/7 on the web at, by downloading the free mobile app or by dialing 511 on your phone.


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