US Bridges

US Highway 85 over Creek

Fair

Bowman County, North Dakota · 2 South of Jct. US 12 · Structure no. 0085014487

Built
1966
59 years old, rebuilt 2000
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
1,130
2019 count
Owner
State
State Highway Agency

About this bridge

US Highway 85 over Creek is a concrete culvert carrying US Highway 85 over Creek in Bowman County, North Dakota. It was built in 1966 and reconstructed in 2000, so it is 59 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 1,130 vehicles a day, roughly 16% of them trucks, projected to reach 1,589 by 2039. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS Highway 85
CrossesCreek
Location2 South of Jct. US 12
RouteU.S. Route 85
Coordinates46.15017, -103.411
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.6 US tons
Inventory rating36.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,130 (2019)
Projected traffic1,589 by 2039
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

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

Frequently asked questions

When was US Highway 85 over Creek built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2000.

What condition is US Highway 85 over Creek 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 July 2024.

How much traffic does US Highway 85 over Creek carry?

About 1,130 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is US Highway 85 over Creek?

The structure is 28 ft (8.5 m) long with a longest span of 9 ft (2.7 m).

Who owns US Highway 85 over Creek?

It is owned by the State Highway Agency.