Ada County Highway District

2020 Green Stormwater Implementation

Construction Update as of April 22, 2021: 

Alley at 4th/5th: Utilities are complete.

Alley at 9th/10th: Phase 1 is complete and crews are waiting on concrete to cure until April 22nd. After that work will begin on Phase 2. 

General Description:

New stormwater collection systems will be implemented in two downtown Boise alleys.

  • The alley that runs along Idaho Street and Bannock Street between 4th Street and 5th Street.
  • The alley that runs along 9th Street and 10th Street between Miller Street and Myrtle Street.



Time Frame

Start Date: Late Spring 2020
End Date:
Fall 2020

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