Ada County Highway District

Shamrock Avenue Bridge

Construction Update April 2, 2021: Raodway has been backfilled to grade and ready for paving. Minor construction items remain. In water work complete. 

Past Updates: West side concrete wing walls have been placed and crews are waiting on cure prior to backfill. Roadway has been backfilled to grade and ready for paving. 

Grade work is complete. Precast pipe sections installed and are backfill complete. West side concrete foundation has been placed. East wall is formed and ready for concrete. 

General Description:

Starting in January, the Ada County Highway District will begin replacing the culvert on Shamrock Avenue, between Fairview Avenue and King Street. Construction is anticipated to be complete before summer 2021.

Impacts will include a brief closure on Shamrock Avenue between Fairview Avenue and King Street, lane restrictions with flaggers, general construction noise, dust, equipment back up alarms, and ground vibration.


Time Frame

Start Date:
January 2021
End Date:
Summer 2021 

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