US Bridges

County Highway over Mauvias Coulee

Good

Benson County, North Dakota · 6 South Churchs Ferry · Structure no. 000000003129130

Built
1998
27 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
107
2018 count
Owner
County
County Highway Agency

About this bridge

County Highway over Mauvias Coulee is a prestressed concrete box beam or girders - single or spread carrying County Highway over Mauvias Coulee in Benson County, North Dakota. It was built in 1998, so it is 27 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 107 vehicles a day, roughly 15% of them trucks, projected to reach 107 by 2038. The structure is 78 ft (23.8 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Highway
CrossesMauvias Coulee
Location6 South Churchs Ferry
RouteCounty Highway 314
Coordinates48.1804, -99.22288
Functional classRural Major Collector

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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.2 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length78 ft (23.8 m)
Longest span77 ft (23.5 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic107 (2018)
Projected traffic107 by 2038
Trucks15%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$270,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Mauvias Coulee built?

It was built in 1998, making it 27 years old in 2025.

What condition is County Highway over Mauvias 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 July 2024.

How much traffic does County Highway over Mauvias Coulee carry?

About 107 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is County Highway over Mauvias Coulee?

The structure is 78 ft (23.8 m) long with a longest span of 77 ft (23.5 m) and a deck 31 ft wide.

Who owns County Highway over Mauvias Coulee?

It is owned by the County Highway Agency.