Ada County Highway District

State Street and Pierce Park Lane Intersection

On April 22, 2020 the Ada County Highway District Commission voted unanimously to delay the State Street and Pierce Park Intersection project indefinitely.

The postponement will give staff the opportunity to redesign the project in order to take advantage of previously-acquired right-of-way which will eliminate costly impacts to the Plantation Country Club. It will also allow some financial leeway as ACHD determines and maneuvers through the presently unknown impacts of COVID-19 on upcoming budgets. Learn more on ACHD's blog.

September 10, 2018

The design phase of this project is planned to be complete by the beginning of Spring 2019. The right-of-way acquisition phase will then happen in FY 2019 and FY 2020 with construction planned for FY 2021.  

August 1, 2018 Open House Materials

Based on public input from an open house held last summer and technical analysis, ACHD has developed a design  that enhances the operation of the intersection for all users. If you missed the open house, please review the materials below and take the project survey.

 Your Comments

Thank you for your interest in the State and Pierce Park intersection project. The comment period closed on August 15, 2018.

The State Street and Pierce Park Lane Intersection Concept Study will go before the ACHD Commission for possible adoption on October 25th at the 6 p.m. Commission Meeting.

 Miss the June 29th open house?

Materials and handouts from the open house can be found under "Related Documents" to the right of your screen.


If you missed the February 15, 2017 open house, all the materials and handouts can be found under "Related Documents" to the right of your screen.

The Ada County Highway District (ACHD) is developing alternatives for the State Street and Pierce Park Lane intersection.  The work will result in a concept design with recommended improvements to enhance the operation of the intersection for all users - motorists, pedestrians, bicyclists and transit.

During the study we will evaluate:

  • Realigning Pierce Park Lane at the intersection with State Street.
  • Increasing pedestrian and bicycle connectivity.
  • Expanding intersection to accommodate future traffic volumes.
  • Reconstructing this portion of State Street to conform with the State Street Transit and Traffic Operations Plan (TTOP), which includes accommodating transit expansion in the future.

Time Frame

Construction Start Date:  FY 2021
End Date: TBD

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