US Bridges

County Highway over Coulee

Fair

Grand Forks County, North Dakota · 4 East 2 West Thompson · Structure no. 000000018141270

Built
1951
74 years old, rebuilt 2018
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
32
2022 count
Owner
County
County Highway Agency

About this bridge

County Highway over Coulee is a steel stringer/multi-beam or girder carrying County Highway over Coulee in Grand Forks County, North Dakota. It was built in 1951 and reconstructed in 2018, so it is 74 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 5 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 32 vehicles a day, projected to reach 44 by 2042. The structure is 35 ft (10.6 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Highway
CrossesCoulee
Location4 East 2 West Thompson
RouteCounty Highway 0
CountyGrand Forks County
StateNorth Dakota
Coordinates47.80275, -97.03837
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.6 US tons
Inventory rating24.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length35 ft (10.6 m)
Longest span32 ft (9.8 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2022)
Projected traffic44 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Highway over Coulee built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2018.

What condition is County Highway over Coulee 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 County Highway over Coulee carry?

About 32 vehicles per day (2022 count).

How long is County Highway over Coulee?

The structure is 35 ft (10.6 m) long with a longest span of 32 ft (9.8 m) and a deck 28 ft wide.

Who owns County Highway over Coulee?

It is owned by the County Highway Agency.