US Bridges

County Highway over Elm River Trib.

Fair

Cass County, North Dakota · 1 East of Hunter · Structure no. 000000009124040

Built
1970
55 years old
Condition
Fair
inspected September 2021
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
20
2017 count
Owner
County
County Highway Agency

About this bridge

County Highway over Elm River Trib. is a concrete culvert carrying County Highway over Elm River Trib. in Cass County, North Dakota. It was built in 1970, so it is 55 years old, older 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, roughly 25% of them trucks, projected to reach 20 by 2037. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesElm River Trib.
Location1 East of Hunter
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates47.18537, -97.19718
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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2021
Inspection intervalevery 48 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic20 (2017)
Projected traffic20 by 2037
Trucks25%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Elm River Trib. built?

It was built in 1970, making it 55 years old in 2025.

What condition is County Highway over Elm River Trib. 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 September 2021.

How much traffic does County Highway over Elm River Trib. carry?

About 20 vehicles per day (2017 count), of which roughly 25% are trucks.

How long is County Highway over Elm River Trib.?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns County Highway over Elm River Trib.?

It is owned by the County Highway Agency.