US Bridges

County Road over Coulee

Good

Grand Forks County, North Dakota · 1 West Mekinock · Structure no. 000000018125130

Built
1966
59 years old
Condition
Good
inspected August 2023
Type
Tee Beam
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
100
2019 count
Owner
County
County Highway Agency

About this bridge

County Road over Coulee is a prestressed concrete tee beam carrying County Road over Coulee in Grand Forks County, North Dakota. It was built in 1966, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 12% of them trucks, projected to reach 100 by 2039. The structure is 31 ft (9.4 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road
CrossesCoulee
Location1 West Mekinock
RouteCounty Highway 0
Coordinates48.0186, -97.3854
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating35.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic100 by 2039
Trucks12%
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 Road over Coulee built?

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

What condition is County Road over Coulee in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does County Road over Coulee carry?

About 100 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is County Road over Coulee?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns County Road over Coulee?

It is owned by the County Highway Agency.