US Bridges

County Highway over Trib. to Bois De Sioux R

Fair

Richland County, North Dakota · 6 South 7 West Fairmont · Structure no. 000000039126461

Built
1986
39 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
75
2018 count
Owner
County
County Highway Agency

About this bridge

County Highway over Trib. to Bois De Sioux R is a concrete culvert carrying County Highway over Trib. to Bois De Sioux R in Richland County, North Dakota. It was built in 1986, so it is 39 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 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 75 vehicles a day, projected to reach 75 by 2038. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesTrib. to Bois De Sioux R
Location6 South 7 West Fairmont
RouteCounty Highway 0
CountyRichland County
StateNorth Dakota
Coordinates45.96475, -96.75817
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.3 US tons
Inventory rating24.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2018)
Projected traffic75 by 2038
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 Highway over Trib. to Bois De Sioux R built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Highway over Trib. to Bois De Sioux R 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 November 2023.

How much traffic does County Highway over Trib. to Bois De Sioux R carry?

About 75 vehicles per day (2018 count).

How long is County Highway over Trib. to Bois De Sioux R?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns County Highway over Trib. to Bois De Sioux R?

It is owned by the County Highway Agency.