Hwy 22 south of St. Peter project starts July 6
Traffic detoured to Highway 99 and County Road 21 until October
The second of the three Minnesota River flood mitigation projects is on Highway 22 at the south edge of St. Peter and will be under construction beginning July 6, 2015. Work to be done:
- Raise the grade and reconstruct from Hwy 169 to the existing Minnesota River Bridge
- Construct a 120’ span bridge (large culvert) to handle additional water flow during high water events
- 2015 - Hwy 22 detour (PDF) from July through October
- 2016 - Hwy 169 - Nicollet CR 13/Highway 99 will be the detour route with Highway 22 as an alternate route.
Hwy 169 Mankato - St. Peter flood mitigation in 2016
The project includes 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 and a median barrier to prevent head-on crashes. The $25 million project received a $9.8 million grant from the EDA.
Constructing the project requires MnDOT to close Hwy 169 from Mankato to St. Peter. The narrow terrain between the bluff and the Minnesota River makes it difficult to rebuild the road under traffic in one season and carrying two-way traffic comes with other safety issues.
Nicollet County Road 13/Hwy will be the detour route (PDF) with Hwy 22 as an alternate route. MnDOT is planning safety improvements to each of these routes in 2015 in anticipation of the added traffic in 2016.