County Project 32-065
Dakota County and the City of Inver Grove Heights will reconstruct about one mile of 117th Street. It will enhance efficiency and mobility, reduce access points, and improve pavement condition. The project will help develop an essential east-west transportation corridor within the region.
The project will also provide pedestrian and bicycle facilities to connect to the Mississippi River Trail.
Road closures and detours
Construction on 117th Street has begun. The street remains open for regular travel with the following exception:
117th Street is closed at the westerly railroad crossings from May 28 to June 5. Please follow detour signage and map. 
View detour map.
Construction progress
May 29-June 6
- Replacing westerly railroad crossing starting May 28 - completed by Union Pacific.
- Continuing overhead power pole relocation
- Continuing storm sewer work near Rich Valley Road
- Continuing sanitary sewer work at the lift station near the eastern railroad crossing
Project timeline
April 2026–October 2027
In the first year of construction, the contractor will focus on building the new eastbound 117th Street lane from Rich Valley Boulevard to Clark Road. In the second year of the project, the contractor will focus on completing the new westbound lanes as well as pavement improvements from Clark Road to Highway 52 ramps.
Public engagement
Open house – Monday, Jan. 30, 2023
The City of Inver Grove Heights and Dakota County hosted a community meeting on Monday, Jan. 30, 2023 to share information about the planned project.
View layout of preferred alternative.
View open house display boards.
Project background
The preferred alternative consists of a two-lane, median divided roadway for a one-mile segment of 117th Street between Rich Valley Boulevard and the Flint Hills Resources Refinery access — just west of the Highway 52/117th Street interchange.
There will be pavement resurfacing between the Pine Bend Refinery access and Courthouse Boulevard (excluding the Highway 52 bridge). The 117th Street/Rich Valley Boulevard intersection will be modified as a 50-mph curve to accommodate westbound traffic heading north and southbound traffic heading east. The south leg of Rich Valley Boulevard will become a side-street stop configuration at the 117th Street curve.
Email updates
To receive email updates for this project, email Stacy Reilly at stacy.reilly@co.dakota.mn.us. Please include “CP 32-65 Updates" in the subject line.