McMillan and Black Cat Roundabout

Share McMillan and Black Cat Roundabout on Facebook Share McMillan and Black Cat Roundabout on Twitter Share McMillan and Black Cat Roundabout on Linkedin Email McMillan and Black Cat Roundabout link

The Ada County Highway District (ACHD) is designing a future roundabout for the McMillan and Black Cat intersection. The purpose of the project is to improve traffic flow and increase safety for all users.

Proposed Improvements

  • Construct a multi-lane roundabout at the McMillan and Black Cat intersection
  • Add curb, gutter and a detached 10-foot-wide multi-use pathway
  • Construct crosswalks at each leg of the intersection with two-stage pedestrian crossings
  • Install rectangular rapid flashing beacons (RRFBs) at each pedestrian crossing
  • Add a truck apron for larger vehicles to use if necessary and intersection lighting


The Ada County Highway District (ACHD) is designing a future roundabout for the McMillan and Black Cat intersection. The purpose of the project is to improve traffic flow and increase safety for all users.

Proposed Improvements

  • Construct a multi-lane roundabout at the McMillan and Black Cat intersection
  • Add curb, gutter and a detached 10-foot-wide multi-use pathway
  • Construct crosswalks at each leg of the intersection with two-stage pedestrian crossings
  • Install rectangular rapid flashing beacons (RRFBs) at each pedestrian crossing
  • Add a truck apron for larger vehicles to use if necessary and intersection lighting


  • CLOSED: This survey has concluded.

    What do you think?

    After reviewing the information for the McMillan and Black Cat project, please take a moment to fill out the community feedback survey.

    Share What do you think? on Facebook Share What do you think? on Twitter Share What do you think? on Linkedin Email What do you think? link
Page last updated: 25 Jul 2024, 01:15 PM