US Bridges

County Highway over Coulee

Fair

Grand Forks County, North Dakota · 6 West 3 South North · Structure no. 000000018109350

Built
1968
57 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
75
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Coulee is a prestressed concrete box beam or girders - multiple carrying County Highway over Coulee in Grand Forks County, North Dakota. It was built in 1968, so it is 57 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 75 vehicles a day, projected to reach 75 by 2039. The structure is 40 ft (12.2 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Highway
CrossesCoulee
Location6 West 3 South North
RouteCounty Highway 0
CountyGrand Forks County
StateNorth Dakota
Coordinates47.68921, -97.7106
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating35.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2019)
Projected traffic75 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Coulee built?

It was built in 1968, making it 57 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 July 2023.

How much traffic does County Highway over Coulee carry?

About 75 vehicles per day (2019 count).

How long is County Highway over Coulee?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 27 ft wide.

Who owns County Highway over Coulee?

It is owned by the County Highway Agency.