US Bridges

County Road over Mouse River

Fair

McHenry County, North Dakota · 6 North 2 West Karlsruhe · Structure no. 000000025118320

Built
1988
37 years old
Condition
Fair
inspected July 2024
Type
Channel Beam
Concrete
Length
99 ft
3 main spans
Daily traffic
25
2018 count
Owner
County
County Highway Agency

About this bridge

County Road over Mouse River is a concrete channel beam carrying County Road over Mouse River in McHenry County, North Dakota. It was built in 1988, so it is 37 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 5 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 25 vehicles a day, projected to reach 25 by 2038. The structure is 99 ft (30.2 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty Road
CrossesMouse River
Location6 North 2 West Karlsruhe
RouteCounty Highway 0
CountyMcHenry County
StateNorth Dakota
Coordinates48.17857, -100.66941
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.8 US tons
Inventory rating28 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length99 ft (30.2 m)
Longest span34 ft (10.4 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2018)
Projected traffic25 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Road over Mouse River built?

It was built in 1988, making it 37 years old in 2025.

What condition is County Road over Mouse River 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 July 2024.

How much traffic does County Road over Mouse River carry?

About 25 vehicles per day (2018 count).

How long is County Road over Mouse River?

The structure is 99 ft (30.2 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.

Who owns County Road over Mouse River?

It is owned by the County Highway Agency.