US Bridges

County Highway over Coulee

Good

Towner County, North Dakota · 4 East 3 South of Bisbee · Structure no. 000000048110290

Built
2009
16 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
10
2017 count
Owner
County
County Highway Agency

About this bridge

County Highway over Coulee is a concrete culvert carrying County Highway over Coulee in Towner County, North Dakota. It was built in 2009, so it is 16 years old, younger 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 10 vehicles a day, projected to reach 10 by 2037. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesCoulee
Location4 East 3 South of Bisbee
RouteCounty Highway 0
CountyTowner County
StateNorth Dakota
Coordinates48.59525, -99.2976
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.4 US tons
Inventory rating47.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2017)
Projected traffic10 by 2037
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 2009, making it 16 years old in 2025.

What condition is County Highway 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 2024.

How much traffic does County Highway over Coulee carry?

About 10 vehicles per day (2017 count).

How long is County Highway over Coulee?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns County Highway over Coulee?

It is owned by the County Highway Agency.