State Street, 8th Street to 4th Street

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  • Reconstruct State Street between 8th and 4th streets.
  • Upgrade all three traffic signals on this section of State St.
  • Construct bulb-outs for shorter pedestrian crossings and better visibility.
  • Add vegetated bioretention facilities for stormwater treatment.
  • Upgrade the existing enhanced crosswalk behind the Idaho State Capitol building to an overhead Rectangular Rapid Flashing Beacon.
  • Reconstruct State Street between 8th and 4th streets.
  • Upgrade all three traffic signals on this section of State St.
  • Construct bulb-outs for shorter pedestrian crossings and better visibility.
  • Add vegetated bioretention facilities for stormwater treatment.
  • Upgrade the existing enhanced crosswalk behind the Idaho State Capitol building to an overhead Rectangular Rapid Flashing Beacon.
  • May 16, 2024

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    • Veolia water work started April 1st and is on-going.
    • 8th Street utility work ongoing.
    • Electrical work ongoing.
    • Pole bases on 5th and 6th have been placed.
  • May 10, 2024

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    • Project includes work on State Street between 4th Street and 8th Street.
    • Veolia water work started April 1st and is on-going.
    • 8th Street utility work ongoing.
    • Electrical work ongoing.
  • May 3, 2024

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    • Veolia water work started April 1st and is on-going.
    • 8 th Street utility work ongoing.
  • April 25, 2024

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    • Milling between 4th and 6th Streets is complete.
    • Veolia water work started April 1st and is on-going.
    • Milling between 6th and 8th Streets is complete.
  • April 19, 2024

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    • Project includes work on State Street between 4th Street and 8th Street
      • Milling between 4th and 6th Streets is complete.
      • Veolia water work started April 1st and is on-going.
      • Milling between 6th and 8th Streets is complete.
  • April 12, 2024 - Construction Detour Map

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    Next week, the closure on State Street will be extended behind the Capitol Building.

    The road is currently closed between 4th and 6th Streets. Beginning Tuesday, State Street will be closed between 4th and 8th Streets. This closure will include the intersections at 4th, 5th, 6th, and 8th Streets.

    Commuters should use Washington Street or Jefferson Street as a detour (see updated detour map).

    The intersection at 8th Street is expected to reopen this summer. Work on the rest of the project is expected to last until the end of November, weather dependent.

    The work is part of ACHD's State Street, 8th Street to 4th Street project, which includes reconstructing the roadway, upgrading traffic signals, and upgrading the enhanced crosswalk behind the Idaho State Capitol to an overhead rectangular rapid flashing beacon (RRFB).



  • April 12, 2024

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    • Milling between 4th and 6th St complete.
    • Veolia water work started April 1st and is on-going.
  • April 5, 2024

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    • Project includes work on State Street between 4th Street and 8th Street.
    • Milling between 4th and 6th St. complete.
    • Veolia water work has started April 1st.
  • March 29, 2024

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    • Project includes work on State Street between 4th Street and 8th Street – Contractor anticipates starting March 25.
      • Milling between 4th and 6th – Veolia work to start immediately after.
      • Milling between 4th and 6th street has been completed.
      • Veolia water work has started.
  • March 20, 2024 - Detour Map Information

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    • The closure of State St between 6th St and 4th St, including the 5th St and 4th St intersections, is scheduled to start March 25th
      • The State St and 6th St intersection will remain open
      • The signed detour 3rd St – see detour map
      • ACHD’s contractor will remove pavement so that Veolia’s contractor can begin work on the waterline
    • Closure to 8thSt will be extended, including the intersections, after the Legislative Session has concluded
      • Likely starting within a week after the Legislative Session
      • This closure is scheduled to continue into November

    Traffic Advisory for March 21, 2024:

    Next week, work will begin on ACHD’s State Street, 4th to 8th Street Project.

    Starting Monday, State Street will be closed between 4th and 6th Streets. This closure includes the intersections at 4th and 5th Streets. Commuters should use Washington Street or Jefferson Street as a detour (see detour map).

    The State Street closure is scheduled to extend to 8th Street after the legislative session has concluded.

    The closure is expected to last until the end of November, weather dependent. The roadwork includes reconstructing the roadway, upgrading traffic signals, and upgrading the enhanced crosswalk behind the Idaho State Capitol to an overhead Rectangular Rapid Flashing Beacon.




Page last updated: 16 May 2024, 04:54 PM