Current Project
Al Busche
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3rd and Bannock Mini-Roundabout

General Description

Materials from May 14, 2014 open house

The Ada County Highway District (ACHD) is seeking comments on the mini-roundabout design for the 3rd Street and Bannock Street intersection.  Identified in the Downtown Boise Implementation Plan (adopted September 2013) as a likely location for a mini-roundabout, the roundabout will increase safety and provide traffic calming when 3rd Street is converted to a two-way street this summer.

Please click on the image below to view the displays from the open house.



Where can I learn more about roundabouts?

Learn more about roundabouts by clicking here.

What other work will ACHD be doing downtown this fall?

Downtown streets being converted to two-way

  • 3rd Street, Main Street to State Street
  • 4th Street, Main Street to State Street
  • 11th Street, Main Street to State Street
  • 12th Street, Front Street to State Street
  • Jefferson Street, 1st Street to 4th Street

Downtown streets being resurfaced

  • Capitol Boulevard, Front Street to Jefferson Street
  • 12th Street, Front Street to State Street

Downtown streets receiving new bike facilities

  • 3rd Street, Myrtle Street to State Street - sharrows/
    shared lanes
  • Capitol Boulevard, from the Boise River to Jefferson
    Street - bike lanes (pending pilot project results)

What is the Downtown Boise Implementation Plan?

In 2013 local agencies worked  with the public to develop a plan to coordinate major roadway improvements that are proposed, planned or requested in the downtown area. Key proposals included mini-roundabouts, converting some one-way streets to two-way, and bike facilities. Click here to learn more.

Time Frame

Start Date: Fall 2014
End Date: TBD