State Street and Pierce Park Lane Intersection
The Ada County Highway District (ACHD) is designing future improvements for the State Street and Pierce Park Lane Intersection. This project aims to improve safety and connectivity for all users, accommodate future traffic volumes, and incorporate ideas and concerns gathered from the public.
The improvements for State Street and Pierce Park Lane include:
- Realigning Pierce Park Lane to improve safety and provide better line of sight for drivers
- Widening State Street within the project limits and add medians where necessary for safety
- Providing U-turns at multiple locations
- Adding continuous multi-use pathways for pedestrians and cyclists
- Adding additional crosswalk on State Street
The Ada County Highway District (ACHD) is designing future improvements for the State Street and Pierce Park Lane Intersection. This project aims to improve safety and connectivity for all users, accommodate future traffic volumes, and incorporate ideas and concerns gathered from the public.
The improvements for State Street and Pierce Park Lane include:
- Realigning Pierce Park Lane to improve safety and provide better line of sight for drivers
- Widening State Street within the project limits and add medians where necessary for safety
- Providing U-turns at multiple locations
- Adding continuous multi-use pathways for pedestrians and cyclists
- Adding additional crosswalk on State Street
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September 19, 2025
Share September 19, 2025 on Facebook Share September 19, 2025 on Twitter Share September 19, 2025 on Linkedin Email September 19, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the Contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Underground electrical work is on-going.
- Work on stormwater system is complete on the north side.
- Contractor placing base gravels for sidewalk and roadway.
- Concrete for sidewalk, curb, and gutter is on-going.
- Concrete paving is anticipated to start the week of September 29th.
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September 12, 2025
Share September 12, 2025 on Facebook Share September 12, 2025 on Twitter Share September 12, 2025 on Linkedin Email September 12, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the Contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor placing base gravels for sidewalk and roadway.
- Concrete for sidewalk, curb, and gutter is expected to start the week of September 15th.
- Concrete paving is anticipated to start the week of September 22nd.
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September 5, 2025
Share September 5, 2025 on Facebook Share September 5, 2025 on Twitter Share September 5, 2025 on Linkedin Email September 5, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the Contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Contractor is excavating the north side of State Street.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor placing base gravels for sidewalk and roadway.
- Concrete for sidewalk, curb, and gutter is expected to start the week of September 9th.
- Concrete paving is anticipated to start the week of September 22nd.
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August 29, 2025
Share August 29, 2025 on Facebook Share August 29, 2025 on Twitter Share August 29, 2025 on Linkedin Email August 29, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone. Contractor is excavating the north side of State Street.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor placing base gravels for sidewalk and roadway.
- Concrete for sidewalk, curb, and gutter is expected to start the week of September 9th.
- Concrete paving is anticipated to start the week of September 22nd.
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August 21, 2025
Share August 21, 2025 on Facebook Share August 21, 2025 on Twitter Share August 21, 2025 on Linkedin Email August 21, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Contractor is excavating the north side of State Street.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor placing base gravels for sidewalk.
- Concrete for sidewalk, curb, and gutter is expected to start the week of September 2nd.
- Concrete paving is anticipated to start the week of September 15th.
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August 15, 2025
Share August 15, 2025 on Facebook Share August 15, 2025 on Twitter Share August 15, 2025 on Linkedin Email August 15, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the Contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Contractor is excavating the north side of State Street. Some work is delayed pending utility work.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor starting placement of base gravels for sidewalk.
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August 8, 2025
Share August 8, 2025 on Facebook Share August 8, 2025 on Twitter Share August 8, 2025 on Linkedin Email August 8, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the contractor can construct the north side of State Street
- Left turns have been eliminated through the work zone.
- Contractor is excavating the north side of State Street. Some work is delayed pending utility work.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor starting placement of base gravels for sidewalk.
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August 1, 2025
Share August 1, 2025 on Facebook Share August 1, 2025 on Twitter Share August 1, 2025 on Linkedin Email August 1, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Contractor is excavating the north side of State Street. Some work is delayed pending utility work.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor starting placement of base gravels for sidewalk.
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July 25, 2025
Share July 25, 2025 on Facebook Share July 25, 2025 on Twitter Share July 25, 2025 on Linkedin Email July 25, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street.
- Traffic has been shifted to the south so the contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Contractor is excavating the north side of State Street. Some work is delayed pending utility work.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
- Contractor starting placement of base gravels for sidewalk.
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July 18, 2025
Share July 18, 2025 on Facebook Share July 18, 2025 on Twitter Share July 18, 2025 on Linkedin Email July 18, 2025 link- Utility relocation work is on-going.
- Traffic calming plan has been implemented in the neighborhoods north of State Street
- Traffic has been shifted to the south so the Contractor can construct the north side of State Street.
- Left turns have been eliminated through the work zone.
- Contractor is excavating the north side of State Street. Some work is delayed pending utility work.
- Underground electrical work is on-going.
- Work on stormwater system is on-going.
Key Dates
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December 17 2024
Materials from the Construction Open House
Business Meeting Materials
Project Background
The State Street Corridor has been studied for several years. ACHD and partnering agencies/jurisdictions have evaluated deficiencies along State Street, developed guidelines encouraging transit-supportive land uses, and identified prioritized transit and traffic improvements. The State Street Transit and Traffic Operation Plan served as the basis for the State Street and Pierce Park intersection improvements. In 2017, the ACHD Commission adopted the State Street and Pierce Park Lane Concept Study. ACHD finalized the design in 2019. In 2020, the ACHD Commission voted to delay the project and work on a redesign to shift the project north. In 2021, the project was restarted to incorporate the northern shift.
Timeline
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2017
State Street and Pierce Park Lane Intersection has finished this stageConcept study approval
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2018
State Street and Pierce Park Lane Intersection has finished this stageDesign of recommended alternative
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2019
State Street and Pierce Park Lane Intersection has finished this stageRight-of-way acquisition
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2020
State Street and Pierce Park Lane Intersection has finished this stageACHD Commission postponed project
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2021
State Street and Pierce Park Lane Intersection has finished this stageRevised design
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2022
State Street and Pierce Park Lane Intersection has finished this stageFinalized design of recommended alternative and received public input
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2023
State Street and Pierce Park Lane Intersection has finished this stageAcquired right-of-way
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2025
State Street and Pierce Park Lane Intersection is currently at this stageConstruction
Who's Listening
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Sr. Project Manager
Phone 208-387-6100 Email connect@achdidaho.org -
Supervisor, Construction
Phone 208-387-6100 Email projects@achdidaho.org -
Business & Community Relations Coordinator
Phone 208-387-6100 Email ejohansen@achdidaho.org
