US Bridges

County Highway over Coulee

Fair

Grand Forks County, North Dakota · 3 West of Mccanna · Structure no. 000000018107132

Built
1950
75 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
22 ft
1 main span
Daily traffic
210
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Coulee is a concrete tee beam carrying County Highway over Coulee in Grand Forks County, North Dakota. It was built in 1950, so it is 75 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 210 vehicles a day, roughly 16% of them trucks, projected to reach 190 by 2039. The structure is 22 ft (6.7 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCounty Highway
CrossesCoulee
Location3 West of Mccanna
RouteCounty Highway 1811
CountyGrand Forks County
StateNorth Dakota
Coordinates48.00579, -97.75728
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width33 ft (10.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2019)
Projected traffic190 by 2039
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
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 1950, making it 75 years old in 2025.

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 September 2023.

How much traffic does County Highway over Coulee carry?

About 210 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is County Highway over Coulee?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 33 ft wide.

Who owns County Highway over Coulee?

It is owned by the County Highway Agency.