Ada County Highway District

2020 Green Stormwater Implementation

Construction Update as of May 29, 2020: The notice to proceed is May 29th.

Alley at 4th/5th: Utility relocations started the week of May 11th and are ongoing. The asphalt was removed and the alley will remain gravel. ACHD's contractor plans to start with this alley.

Alley at 9th/10th: There will be a slight delay to allow for adjacent development to take place. Work in this alley is expected to start later this summer.

There was a preconstruction conference on February 24th.

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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