US Bridges

I-94 Business Loop over Little Missouri River

Fair

Billings County, North Dakota · 2 Southeast of I-94 · Structure no. 0094901376

Built
1942
83 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
412 ft
4 main spans
Daily traffic
730
2019 count
Owner
State
State Highway Agency

About this bridge

I-94 Business Loop over Little Missouri River is a steel stringer/multi-beam or girder carrying I-94 Business Loop over Little Missouri River in Billings County, North Dakota. It was built in 1942, so it is 83 years old, older than the North Dakota average of 48.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 730 vehicles a day, roughly 11% of them trucks, projected to reach 1,100 by 2039. The structure is 412 ft (125.6 m) long and 45 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesI-94 Business Loop
CrossesLittle Missouri River
Location2 Southeast of I-94
RouteState Highway 94
Coordinates46.91642, -103.53171
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.4 US tons
Inventory rating33.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length412 ft (125.6 m)
Longest span115 ft (35.1 m)
Deck width45 ft (13.7 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic730 (2019)
Projected traffic1,100 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-94 Business Loop over Little Missouri River built?

It was built in 1942, making it 83 years old in 2025.

What condition is I-94 Business Loop over Little Missouri River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does I-94 Business Loop over Little Missouri River carry?

About 730 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is I-94 Business Loop over Little Missouri River?

The structure is 412 ft (125.6 m) long with a longest span of 115 ft (35.1 m) and a deck 45 ft wide.

Who owns I-94 Business Loop over Little Missouri River?

It is owned by the State Highway Agency.