TH 336 Reconstruction

East of Moorhead, Minnesota

Trunk Highway 336 is an important link between the north-central Minnesota lakes area and the Fargo-Moorhead vicinity, connecting US 10 and I-94 just east of the City of Moorhead. The existing roadway was a narrow, two-lane facility. The highway crossed the busy BNSF Railroad at grade, and also had an at-grade intersection with US 10. At I-94, the existing interchange was geometrically deficient and had severe sight distance limitations.

SRF was retained by MnDOT District 4, for preliminary engineering, Access Justification Reports, environmental studies and final design P, S & E for improvements to MN TH 336.

Development of alternatives (especially for the new US 10/MN TH 336 interchange) included consideration of impacts to existing commercial development and local road access to the state highways. To address these concerns, numerous meetings were held with local government representatives and landowners during development of the proposed design concepts. The impacts of the resulting Build alternative were studied and ­documented in an Environmental Assessment (EA) document.

SRF coordinated closely with BNSF during design of the MN TH 336 bridges over the railroad. The bridge span length was chosen to accommodate BNSF’s current and future needs with an efficient and cost-effective design that respected MnDOT’s project budget.

SRF provided complete design services for improvements including:

  • Reconstruct 2.2 miles of MN TH 336 to a four-lane divided roadway
  • One mile of transition section roadways at the north and south project limits
  • New grade-separated bridge crossing over the BNSF Railroad
  • New interchange at US 10
  • Reconstruct the interchange at I-94, including addition of a new loop
  • 1.5-miles of new frontage roads for local access
  • SRF also prepared plans for staged construction to maintain traffic on all roadways throughout the project.