Topaz Avenue Bridge

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Project substantially complete

As part of the Ada County Highway District’s (ACHD) Bridge Maintenance Program, ACHD will replace the culvert on Topaz Avenue north of Overland Road, as early as the beginning of November 2023.* Construction is expected to be complete spring of 2024.

This bridge improvement project will include removing and replacing the existing bridge over the Five Mile Creek.

*Construction schedules may change due to high demand for contractors, labor, and supplies.

As part of the Ada County Highway District’s (ACHD) Bridge Maintenance Program, ACHD will replace the culvert on Topaz Avenue north of Overland Road, as early as the beginning of November 2023.* Construction is expected to be complete spring of 2024.

This bridge improvement project will include removing and replacing the existing bridge over the Five Mile Creek.

*Construction schedules may change due to high demand for contractors, labor, and supplies.

Project substantially complete

  • February 16, 2024

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    • Precast sections complete.
    • Wall pours scheduled for this week.

  • February 9, 2024

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    • Precast sections set and grouted.
    • Forming wing and end walls at both ends.

  • February 2, 2024

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    • Waiting on precast - 5 of 11 sections have been delivered.
    • Planning to set precast sections starting Friday.
    • Footings placed.

  • January 26, 2024

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    • Installation of the City of Meridian sewer casing complete.
    • Waiting on precast.
    • Excavation prep for footings complete.
    • Base prep for footings complete.
    • Contractor will prep for footing placements once weather permits.

  • January 19, 2024

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    • Installation of the City of Meridian sewer casing complete.
    • Waiting on precast.
    • Excavation prep for footings complete.
    • Base prep for footings complete.
    • Contractor is prepped for footing placements once weather permits.

  • January 12, 2024

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    • Installation of the City of Meridian sewer casing complete.
    • Waiting on precast.
    • Excavation prep for footings continues.
    • Base prep for footings started.

  • January 5, 2024

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    • Installation of the City of Meridian sewer casing complete.
    • Waiting on precast.
    • Excavation prep for footings started.

  • December 22, 2023

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    • Contractor has demoed the existing culvert.
    • Installation of the City of Meridian sewer casing nearly complete.
    • Waiting on precast.

  • December 15, 2023

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    • Contractor started Demo of the roadway on December 4 th.
    • Environmental plan being developed for City of Meridian work.

  • December 8, 2023

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    • Contractor to start on Topaz December 4th.
    • Notification boards have been set.
    • Environmental plan being developed for City of Meridian work.