Minnesota Department of Transportation

511 Travel Info

I-94/Hwy 75 interchange reconstruction

Moorhead

Project details

Current I-94/Hwy 75 work zone
Moorhead interchange area construction map

The Minnesota Department of Transportation plans to reconstruct the intersection of I-94 and Hwy 75/8th Street. In addition, auxiliary lanes (an additional lane in each direction) are planned on I-94 between Hwy 75/8th Street and 20th Street.

The project will be designed to improve mobility and safety through the interchange and reduce delays on both Hwy 75/8th Street and I-94.

For the most up-to-date information on this project, sign up for project email alerts through the "Connect with us" section to the right or click here for the latest news.

Current Traffic Impacts

  • Work (Stage 1) began April 25.
    • Shoulder closures and overnight lane closures on I-94 between Hwy 75/8th St. and 20th St.
    • Lane closures/traffic shifts on Hwy 75/8th St. between 22nd Ave S and 35th Ave. S/Belsly Blvd

Construction Staging

The project will be constructed in four major stages over the 2016 construction season. Some minor cleanup may be completed in 2017. A PDF project handout with maps and summaries is available by clicking here.

Detours

Detour map - From early June to mid- to late-August, Hwy 75/8th St. traffic will detour to 40th Ave S, 20th St S and 12th Ave S. The 34th St. interchange will be used for some traffic movements.

Stage 1 (Late April to early June)


Planned Work (Work Plan Map)

  • I-94 auxiliary lane construction (an additional lane in each direction) between Hwy 75/8th St. and 20th St.
  • Improvements to Hwy 75/8th St. between 22nd Ave. S. and 24th Ave. S.
  • Improvements to Hwy 75/8th St. between 30th Ave. S and 35th Ave. S./Belsly Blvd

Traffic Impacts (Traffic Impact Map)

  • I-94 and Hwy 75/8th St. will remain open
  • Shoulder closures and overnight lane closures on I-94 between Hwy 75/8th St. and 20th St.
  • Lane closures/traffic shifts on Hwy 75/8th St. between 22nd Ave S and 24th Ave S (Delays likely)
  • Lane closures/traffic shifts on Hwy 75/8th St. between 30th Ave S and 35th Ave S/Belsly Blvd (Delays likely)

Stage 2 (Approx. early June to early July)


Planned Work (Work Plan Map)

  • Reconstruction of the east side I-94 ramps (westbound off-ramp & eastbound on-ramp)
  • Reconstruction of the east side of Hwy 75 between 24th Ave. and 30th Ave.

Traffic Impacts (Traffic Impact Map / Traffic simulation AM / Traffic simulation PM / Detour)

  • I-94 remains open, Hwy 75 will close over I-94
  • East ramps between I-94 and Hwy 75 closed for reconstruction
  • West ramps between I-94 and Hwy 75 remain open (but traffic cannot cross the bridges)
  • East side of the Hwy 75/8th St. intersection with 30th Ave will close for two weeks

Stage 3A (Approx. early July to late July)


Planned Work (Work Plan Map)

  • Reconstruction of the eastbound I-94 off-ramp (southwest corner)
  • Reconstruction of the west side of Hwy 75 between 24th Ave. and 30th Ave.

Traffic Impacts (Traffic Impact Map / Traffic simulation AM / Traffic simulation PM / Detour)

  • I-94 remains open, Hwy 75 remains closed over I-94
  • Southwest off ramp from I-94 east to Hwy 75 closed for reconstruction
  • Northwest on ramp from Hwy 75 to I-94 west remains open
  • East ramps between I-94 and Hwy 75 re-open (but traffic cannot cross the bridges)
  • West side of the Hwy 75/8th St. intersection with 30th Ave will close for two weeks

Stage 3B (Approx. late July to mid/late August)


Planned Work (Work Plan Map)

  • Reconstruction of the westbound I-94 on-ramp (northwest corner)
  • Continued reconstruction of the west side of Hwy 75 between 24th Ave. and 30th Ave.

Traffic Impacts (Traffic Impact Map / Traffic simulation AM / Traffic simulation PM / Detour)

  • I-94 remains open, Hwy 75 remains closed over I-94
  • Northwest on ramp from Hwy 75 to I-94 westbound closed for reconstruction
  • Southwest off ramp from I-94 east to Hwy 75 re-opens
  • East ramps between I-94 and Hwy 75 remain open (but traffic cannot cross the bridges)

Stage 4 (mid/late August to October)


Planned Work (Work Plan Map)

  • Complete work on Hwy 75/8th St.
  • Seeding, cleanup

Traffic Impacts (Traffic Impact Map)

  • I-94 and Hwy 75/8th St. will be open
  • Lane closures on Hwy 75/8th St. (locations may change during this phase)

Cost estimate

  • $13.6 million

Preferred alternative

MnDOT has selected a preferred interchange alternative, the Diverging Diamond Interchange (DDI) alternative. (Click here for 9MB PDF of the layout.) The DDI best addressed the project purpose and need as well as stakeholder input. A simulation of projected 2035 traffic volumes flowing through the DDI can be viewed at at this link (77MB MP4) or a low-resolution version can be viewed here (17 MB WMV).

Additional Diverging Diamond Interchange links