US Bridges

County Hwy. over Larson Coulee

Good

Ward County, North Dakota · 3W 3N Logan on Old HWY 52 · Structure no. 000000051146411

Built
1979
46 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
70
2019 count
Owner
County
County Highway Agency

About this bridge

County Hwy. over Larson Coulee is a concrete culvert carrying County Hwy. over Larson Coulee in Ward County, North Dakota. It was built in 1979, so it is 46 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 70 vehicles a day, projected to reach 70 by 2039. The structure is 43 ft (13.1 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Hwy.
CrossesLarson Coulee
Location3W 3N Logan on Old HWY 52
RouteCounty Highway 0
CountyWard County
StateNorth Dakota
Coordinates48.19631, -101.23148
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30.9 US tons
Inventory rating18.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2019)
Projected traffic70 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Hwy. over Larson Coulee built?

It was built in 1979, making it 46 years old in 2025.

What condition is County Hwy. over Larson 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 May 2023.

How much traffic does County Hwy. over Larson Coulee carry?

About 70 vehicles per day (2019 count).

How long is County Hwy. over Larson Coulee?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 42 ft wide.

Who owns County Hwy. over Larson Coulee?

It is owned by the County Highway Agency.