Constructing this project requires us to close Hwy 169 from Mankato to St. Peter. The narrow terrain between the bluff and the Minnesota River rebuilding the road under traffic in one season and carrying two-way traffic comes with other safety issues.
Starting February 2016
February to April - single lane closures
April to October - Nicollet County Rd 13/Hwy 99 will be the detour route (PDF) with Hwy 22 as an alternate route. We've completed safety improvements to each of these routes in anticipation of the added traffic.
April to October - 7 Mile Creek Park Closed
April to October - Kiwanis Recreation Area Open
April to October - Hwy 169 Businesses Open (Happy Chef, Super 8 Motel, Riverbend Rental - WACO Scaffolding, BP Station)
This last of three projects along the Minnesota River involves raising Hwy 169 from Mankato to St. Peter above the 100-year flood elevation to maintain traffic during high water events in four flood-prone areas (Hiniker Mill, 7-mile Creek, Old River Road, and State Hospital). When these highways were originally constructed in the early 1960’s, the Minnesota River high-water elevation was assumed at 751 and the roads were constructed accordingly. The actual 100-year flood elevation in this area ranges from about 756.0 to 756.6. View overview map of all three projects (PDF).
Raising the grade in four flood-prone areas (Hiniker Mill, 7-mile Creek, Old River Road, and State Hospital) to raise the road above the 100 year flood
Six miles of resurfacing for a smoother road
New median barrier to prevent head-on crashes
Unsuitable soils in reconstruction areas
Coordination with rehabilitation of Hwy 99 bridge over Minnesota River at Saint Peter
Management of traffic during construction and access to businesses during construction