US Bridges

US Highway 85 over Creek

Fair

Bowman County, North Dakota · 5 North of S.D. Border · Structure no. 0085004892

Built
1966
59 years old, rebuilt 2000
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
42 ft
4 main spans
Daily traffic
1,030
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 1,030 vehicles a day, roughly 17% of them trucks, projected to reach 1,391 by 2039. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS Highway 85
CrossesCreek
Location5 North of S.D. Border
RouteU.S. Route 85
Coordinates46.0112, -103.4109
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 48 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 alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating68.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,030 (2019)
Projected traffic1,391 by 2039
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 1,030 vehicles per day (2019 count), of which roughly 17% are trucks.

How long is US Highway 85 over Creek?

The structure is 42 ft (12.8 m) long with a longest span of 10 ft (3 m).

Who owns US Highway 85 over Creek?

It is owned by the State Highway Agency.