146th St. & Allisonville Rd. Interchange

Project Information

Current Status

5/19/23:  Phase 1 traffic restrictions are in place. Please refrain from entering into closed lanes, which are marked by the presence of traffic barrels and solid lane lines. The worksite speed limit is set at 35 mph. Please exercise caution while driving through this construction zone.

Construction crews are removing center concrete medians and preparing to put down temporary pavement. This will allow traffic to be shifted so construction can begin on the new interchange configuration. Utility relocation work is ongoing in the right-of-way. 

Delays at the intersection are anticipated during peak hours. Motorists are encouraged to seek an alternate route when feasible.


Project Newsletter

PRJ_Newsletter_Signup Opens in new window

Sign up to receive the bi-weekly project newsletter beginning May of 2023

flickr photo album

Project Location

Intersection of Allisonville Rd. and 146th St. 

Google_StreetView Opens in new window

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