146th St. & Allisonville Rd. Interchange

Project Information

Current Status

11/9/23: Phase 2A traffic restrictions are still in effect. These restrictions eliminate left turn movements from 146th Street onto Allisonville Road and reopen to two through lanes on eastbound and westbound 146th Street.

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Project Location

Intersection of Allisonville Rd. and 146th St.

Reason for Project

This project is needed in order to reduce congestion at the existing intersection.

Project Scope

The existing intersection will be converted into a grade-separated interchange. 

Construction Details

  • Design Firm: United Consulting / Butler, Fairman & Seufert 
  • Inspection Firm: United Consulting / Lochmueller Group
  • Contractor: Superior Construction
  • Construction Start Date: Spring 2023
  • Construction Completion: Summer 2025
  • Construction Cost: $44 Million est.


Design costs will be funded locally. This project has been awarded $9.5M in federal funds for construction ($4.25M in CMAQ & $4.25M in STBG). The balance of construction costs will be funded locally.

Allisonville Rd. & 146th St. Interchange