US Bridges

County Highway over Mauvais Coulee

Fair

Towner County, North Dakota · 5 North 5 West Rock Lake · Structure no. 000000048109100

Built
1995
30 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
20
2017 count
Owner
County
County Highway Agency

About this bridge

County Highway over Mauvais Coulee is a concrete culvert carrying County Highway over Mauvais Coulee in Towner County, North Dakota. It was built in 1995, so it is 30 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 20 vehicles a day, projected to reach 20 by 2037. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesMauvais Coulee
Location5 North 5 West Rock Lake
RouteCounty Highway 0
CountyTowner County
StateNorth Dakota
Coordinates48.86306, -99.33113
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 inspectionAugust 2024
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 rating48 US tons
Inventory rating28.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2017)
Projected traffic20 by 2037
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Mauvais Coulee built?

It was built in 1995, making it 30 years old in 2025.

What condition is County Highway over Mauvais 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 August 2024.

How much traffic does County Highway over Mauvais Coulee carry?

About 20 vehicles per day (2017 count).

How long is County Highway over Mauvais Coulee?

The structure is 26 ft (7.9 m) long with a longest span of 13 ft (4 m).

Who owns County Highway over Mauvais Coulee?

It is owned by the County Highway Agency.