District 6 Overview
Enhancing Financial Effectiveness
MnDOT is focused on stretching tax payer dollars while continuing to deliver effective and highly valued products, services and programs. Today we are using technology, partnerships, performance-based design, contracting methods, etc. to reduce costs, save time and limit impacts to travelers, shippers and businesses in order to deliver efficient and reliable multimodal transportation. A strategic priority, financial effectiveness is demonstrated by the following programs, among others, at MnDOT District 6.
Hwy 52 Safety, Access and Interchange Study
MnDOT, Goodhue County and township officials from Leon, Stanton, and Cannon Falls Townships partnered to study options for addressing safety and access concerns along Hwy 52 between Hader and the southern limits of Cannon Falls in Goodhue County. The study examined safety and access on Hwy 52 from the southern limits of Cannon Falls to south of the Highway 57 junction and determined a recommended location for a Hwy 52 interchange in the vicinity of County Road 1 and County Road 9. The study also included related roadway network and access management improvements within the project vicinity.
Safety improvements and the installation of a quadrant interchange at Hwy 52 and County Road 9 were completed in November of 2014 at a cost of $6.7 million.
- District staff, Central Office staff and Goodhue County studied safety improvement strategies for the intersection of Hwy 52 and Goodhue County Road 9, where 96 crashes were recorded from 2000 to 2014.
- In 2013, Goodhue County applied for funding for construction of a full diamond interchange through the MnDOT Corridor Investment Management Strategy (CIMS) program.
- Goodhue County was awarded a portion of the CIMS funds, but not enough to construct a diamond interchange.
- As a solution, MnDOT and Goodhue County partnered to look at other interchange designs that would provide a high return on investment, while meeting the goal to improve safety and mobility.
- Some key design needs were:
- A safe geometric design that would allow phasing a “full interchange” in the future.
- A grade separated intersection.
- Access from Hwy 52 to CR 9.
- Minimal construction impacts to Hwy 52 traffic, to farmland and the environment.
- The quadrant interchange was the concept design developed to meet those goals as well as reducing both farmland and wetland impacts by almost half and allowing for future expansion to a full interchange as traffic levels or safety needs dictate.
- This revised interchange design set the stage for future low-cost safety improvements and access management within the corridor.
- Construction-cost scoping estimate of the diamond interchange was $12 million, whereas construction-cost scoping estimate of the quadrant interchange was $8 million.
- The Hwy 52 and County Road 9 work was awarded as a Design-Build project at a cost of approximately $6.7 million, providing additional significant cost savings.