146th St. West

Project Information

Current Status

07/15/17: Phase 1 Construction from Spring Mill Rd. to Ditch Rd. is complete. Phase 2 Construction is expected to begin in the late Summer of 2017.

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Project Location

All Phases: 146th St. from Boone Co. to Spring Mill Rd.

Project Scope

The expansion of 146th Street will continue from west of Springmill Road to the Boone County Line. The road will be reconstructed to a 5-lane section with center median. 146th Street will be limited access with no drives or curb cuts allowed between mile points. Frontage roads will be utilized parallel to 146th Street to access homes / businesses. Roundabout intersections are planned at the mile points (ie. Eagle Creek Road, Shelborne Road, Towne Road, and Ditch Road).

Construction Details

  • Design Firms: 
    • American Structurepoint
    • United Consulting Engineers
    • CHA - Phase 1
    • Beam, Longest & Neff - Phase 2
    • USI Consultants - Phases 3 and 4
  • Contractor: TBD (Phase 2)
  • Construction Start Date: TBD (Phase 2)
  • Construction Completion: TBD (Phase 2)
  • Construction Cost (Est.):  TBD (Phase 2)


The design and 20% of construction will be locally funded. 80% of the construction and construction inspection costs will be funded using Federal Aid.