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i94

I-94 Bismarck-Mandan

Project Details

  • Road construction work on I-94 through Bismarck to Mandan has begun.
  • The five-mile-long project begins west of the Grant Marsh Bridge and continues east of Exit 161 (Bismarck Expressway).
  • Construction work is expected to be completed in late fall.
  • I-94 will be open to traffic at all times throughout this process, utilizing a combination of lane closures and head-to-head traffic.
  • The speed limit is reduced to 45 mph or lower throughout the construction zone.
  • A 12-foot width restriction is in place.
  • Work consists of concrete pavement repair, asphalt overlays and bridge work.

News and Traffic Updates

UPDATE AUG 9TH: A Portion of Westbound Traffic on I-94 in Bismarck to Switch to Passing Lane Friday Morning
On Friday, August 11, westbound traffic will switch from using the driving (right) lane to the passing (left) lane from the crossover just west of the bridge over N. Washington Street (mile marker 158) all the way across the Grant Marsh Bridge over the Missouri River.
Read entire August 9th press release.

UPDATE JUL 17: Westbound Traffic shifting from Passing Lane to Driving Lane
On Tuesday, July 18, westbound traffic on I-94 over the Hay Creek Bridge will shift from the passing (left) lane to the driving (right) lane as crews get ready to pave through the entire corridor. Paving will begin overnight on Wednesday, July 19, in the westbound passing (left) lane from the Grant Marsh Bridge to the east end of the project, just past Exit 161 (Bismarck Expressway). Paving in the passing lane should be complete on Thursday, July 20.
Read entire July 17th press release.

UPDATE JUN 28: Speed Limit Temporarily Reduced to 25 MPH on I-94 Across the Grant Marsh Bridge in Bismarck/Mandan
Starting Thursday, June 29 at 6:00 a.m. until Friday, June 30 at Noon, the speed limit across the Grant Marsh Bridge over the Missouri River will be reduced to 25 MPH.
Read entire June 28th press release.

UPDATE JUN 20: I-94 Eastbound On-Ramp at Exit 157 Under Repair Starting This Week
The eastbound on-ramp to I-94 at Exit 157 (W. Divide Ave / Tyler Parkway) in Bismarck will be under repair starting this week. The ramp will remain open to traffic while roadwork is underway, though speeds will be reduced and motorists are encouraged to use caution while using the on-ramp.
Read entire June 20th press release.

UPDATE JUN 15: North 4th Street to Return to Normal
Traffic on North 4th Street will return to normal by Friday, June 16, as the traffic controls in place below the I-94 bridge are being removed.
Read entire June 15th press release.

UPDATE JUN 12: 4th Street and North Washington Lanes Narrowed
To complete bridge work on I-94 above North 4th Street and North Washington Street, traffic lanes will be narrowed on those streets and traffic will shift left or right at different stages of the project.
Read entire June 12th press release.

UPDATE JUN 9: Exit 161 will be Narrowed
The off-ramp from eastbound I-94 onto Bismarck Expressway at Exit 161 will be narrowed for repair work starting on Monday, June 12, as part of the Bis-Man I-94 Project. Work will begin mid-morning on Monday and continue throughout the week. The ramp will remain open to traffic while the roadwork is being done. Drivers should slow down and use caution when traveling through the work zone.
Read entire June 9th press release.

UPDATE TWO JUN 6: Over-Width vehicle has been removed from Exit 161
The over-width vehicle stuck on westbound I-94 at the Hay Creek Bridge, between Exit 161 (Bismarck Expressway) and Exit 159 (Hwy 83/State Street), has been removed. Traffic flows have returned to normal.
Read entire June 6th; 2nd press release.

UPDATE JUN 6: Over-Width vehicle stuck at Exit 161
An over-width vehicle is stuck on westbound I-94 at the Hay Creek Bridge, between Exit 161 (Bismarck Expressway) and Exit 159 (Hwy 83/State Street).
Read entire June 6th press release.

NEWS JUN 5: Concrete Buckled near Expressway
A spokesman for the I-94 Bis-Man Project says heat fluctuations caused the concrete to buckle on the interstate near the Bismarck Expressway exit on Friday.
Read the whole story from KFYR TV.

UPDATE JUN 2: Eastbound Traffic shifting to Westbound Roadway
On Monday, June 5, traffic on eastbound I-94 in Bismarck will shift, utilizing median crossovers, to the westbound roadway with head-to-head traffic for approximately one mile. The crossover for eastbound traffic will start from mile marker 158 and continue to mile marker 159.
Read entire June 2nd press release.

UPDATE MAY 25: All Traffic shifting to Passing Lanes
Starting May 30, all traffic through I-94 Bis-Man Project corridor to be shifted to passing lanes, westbound lane reductions to extend past Exit 161.
Read entire May 25th press release.

UPDATE MAY 23: Westbound Traffic shifting to Passing Lane
Westbound traffic on I-94 to be shifted to passing lane this Wednesday.
Read entire May 23rd press release.

UPDATE MAY 19: Westbound Traffic shifting to Passing Lane
Eastbound traffic on I-94 to be shifted to passing lane on Monday.
Read entire May 19th press release.

NEWS APRIL 27:
I-94 construction is underway (KXMB)

UPDATE APRIL 24: Roadwork Begins
NDDOT begins I-94 roadwork in Bismarck.
Read entire April 24th press release.

UPDATE APRIL 12: Construction set to Begin
Construction work set to begin on I-94 through Bismarck this spring.
Read entire April 12th press release.

Project Information

i94 bismarck logo

Road construction work on I-94 through Bismarck to Mandan has begun. The five-mile-long project begins west of the Grant Marsh Bridge and continues east of Exit 161 (Bismarck Expressway.) Work consists of concrete pavement repair, asphalt overlays and bridge work.

I-94 will be open to traffic at all times throughout this process, utilizing a combination of lane closures and head-to-head traffic. A 12-foot width restriction is in place and the speed limit is reduced to 45 mph or lower throughout the construction zone. Construction work is expected to be completed in late fall.

The North Dakota Department of Transportation (NDDOT) encourages local motorists, which include businesses and commuters, to plan ahead throughout construction season to avoid commute delays.

Press Releases

Text DRIVE to 46786 to receive construction and traffic updates on the I-94 Bis-Man Project.

Text Alerts

Text DRIVE to 46786 to receive construction and traffic updates on the I-94 Bis-Man Project.


Motorists are encouraged to use the zipper merge on the I-94 Bis-Man Project. Use both open lanes until the point of the lane reduction. Then take turns, left-right, merging into one lane, coming together like the teeth of a zipper. The zipper merge has been proven to move 15% more traffic through a construction zone.

Project Map

(for a printable map click on image below)

project map


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