Minnesota Department of Transportation

511 Travel Info

Hwy 169 - Hwy 22 - Hwy 99 Intersections

St, Peter

Orange barrels on a highway

Design concepts

Below are four design concepts for the intersection corridor of Hwy 169/Hwy 22/Hwy 99. Feedback received from St. Peter city staff, city council, and the community will be taken into consideration as MnDOT finalizes a layout. Please email any comments you'd like to share and specify which concept you prefer.

Concept A - Dual Left Turn Lanes

Cost: Low construction costs

Safety: Improved safety at Hwy 169/Hwy 22 due to protected left-turn signal phasing

Capacity/Delay: Reduced overall delay and queuing at Hwy 169/Hwy 22

Impact: No permanent impacts to adjacent properties

Illustration showing Concept A Build Alternative for Hwy 169, Hwy 22 and Hwy 99 in St. Peter, MN. Image shows the addition of a second SB Hwy 169 to EB Hwy 22 left turn lane.

Concept B - Roundabouts

Cost: Medium construction costs

Safety: Reduced potential of fatal and serious injury crashes at both intersections, but increased frequency in "property damage only" crashes

Capacity/Delay: Northbound Hwy 169 through traffic and westbound Hwy 22 right turn traffic may experience increased delay and queuing during peak periods, but other movements are expected to experience reduced delay and queuing

Impact: Limited permanent impacts to adjacent properties

Illustration showing Concept B Build Alternative for Hwy 169, Hwy 22 and Hwy 99 in St. Peter, MN. Image shows roundabouts installed at the Hwy 169/22 intersection and the Hwy 169/99 intersection.

Concept C - Signalized RCUTs

Cost: Low construction costs

Safety: Improved safety at both intersections due to reduced conflicts points and improved roadway geometry

Capacity/Delay: Reduced overall delay and queuing at Hwy 169/Hwy 22, but longer travel distance for southbound Hwy 169 to southbound Hwy 22, and eastbound Hwy 99 to northbound Hwy 169 turning movements

Impact: No permanent impacts to adjacent properties

Illustration showing Concept C Build Alternative for Hwy 169, Hwy 22 and Hwy 99 in St. Peter, MN. Image shows the installation of RCUTs south of the Hwy 169/22 and Hwy 169/99 intersections to accommodate left turning movements.

Concept D - Hybrid: Dual Left Turn with RCUT

Cost: Low construction costs

Safety: Improved safety at Hwy 169/Hwy 22 due to protected left turn signal phasing and improved safety at the Hwy 169/Hwy 99 intersection due to reduced conflict points and improved roadway geometry

Capacity/Delay: Reduced overall delay and queuing at Hwy 169/Hwy 22, but longer travel distance for eastbound Hwy 99 to northbound Hwy 169 turning movement

Impact: No permanent impacts to adjacent properties

Illustration showing Concept D Build Alternative for Hwy 169, Hwy 22 and Hwy 99 in St. Peter, MN. Image shows the addition of a second SB Hwy 169 to EB Hwy 22 left turn lane, and an RCUT south of the Hwy 169/99 intersection to accommodate left turning movements.