Planning and Collaboration

Ongoing Studies

Three Cities River Crossing Study
Sponsor: Ada County Highway District
Status: Open for Public Comment July 2010, end date TBD

On Wednesday, July 21, 2010 the ACHD Commission voted to recommend a No Build Alternative, but left open the option to revisit the project in the future if funding becomes available. The Commission could not support the Build Alternative at this time because the environmental and cost impacts were more significant than the traffic benefits.

The purpose of the study is to conduct environmental analysis and concept level engineering to define an alignment for a new road and bridge connecting the intersection of State Highway 55 and State Street on the north with Chinden Boulevard (U.S. 20/26) on the south. Currently the river crossings in this area are four miles apart. A new river crossing would relieve congestion on Glenwood Street and Eagle Road .

US 20/26 Corridor Plan
Sponsors: Idaho Transportation Department
Status: TBD

This study will provide a corridor plan to identify current and future highway needs for more than 14 miles of U.S. 20/26 extending from I-84 near Caldwell to Nyssa, Oregon.

US 20/26 Corridor Preservation Study (Caldwell to Eagle Road)
Sponsors: Idaho Transportation Department
Status: Ongoing

The US 20/26 Corridor (Chinden Boulevard) has been experiencing high growth. The study area begins at Interstate 84 in Caldwell and ends at Eagle Road (SH 55). The US 20/26 Corridor Preservation Study will identify future transportation improvements and determine the need for future right-of-way between Boise and Caldwell. It includes areas within the cities of Boise, Eagle, Meridian, and Caldwell as well as unincorporated Ada and Canyon Counties.

When complete, the U.S. 20/26 Corridor Preservation Study will identify:

  • A vision for how roadway should function as part of the regional transportation system.
  • An Access Management Plan. (Completed in December 2008)
  • The improvements and actions necessary for the vision to be implemented.
  • Additional right-of-way needed to accommodate the future needs in the corridor.

US 95 Corridor Plan
Sponsor: Idaho Transportation Department
Status: Expected completion in 2011

Study will deliver a corridor plan for US 95 from the Nevada State Line to District Three boundary north of New Meadows.