145th Street (County Road 42) Interchange Improvements at Highway 52
County Project 42-174
The project will upgrade the interchange area by widening County Road 42 and the ramps to and from Highway 52.
The existing highway has a documented crash history. The project will improve operations of the interchange ramps. It Includes adding signals, widening the ramps and adding more turn lanes.
Road closures and detours
The southbound Highway 52 ramp at County Road 42 is closed for road construction and the installation of a new signal system. Please follow the posted detour.
Construction progress
Aug. 7-15
- Excavating roadway
- Grading along the south side of 145th Street
- Beginning to construct the new road section
Community engagement
A public open house was held on Monday, Aug. 25, 2025 from 4-6 p.m. at:
Rosemount Public Works Building
14041 Biscayne Ave., Rosemount
The open house provided an opportunity to meet with the project team to learn more about the project goals, the current improvement plans and provide input on the future of County Road 42.
Get email updates
To receive email updates for this project, email Stacy Reilly at stacy.reilly@co.dakota.mn.us. Please include “CP 42-174 Updates" in the subject line.
Project timeline
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Begin data collection and design
August 2024
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Final geometric layout
June 2025
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Public open house #1
Summer 2025
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Final plans
December 2025
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Project bidding
April 2026
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Construction
Summer 2026