US Bridges

County Highway over Elm River

FairPosted for load

Cass County, North Dakota · 4 West 1 South of Grandin · Structure no. 000000009129010

Built
1955
70 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
10
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Elm River is a steel stringer/multi-beam or girder carrying County Highway over Elm River in Cass County, North Dakota. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, projected to reach 10 by 2039. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Highway
CrossesElm River
Location4 West 1 South of Grandin
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates47.22434, -97.09654
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating35.2 US tons
Inventory rating20.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span37 ft (11.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2019)
Projected traffic10 by 2039
Trucks—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$36,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Elm River built?

It was built in 1955, making it 70 years old in 2025.

What condition is County Highway over Elm 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 September 2023.

How much traffic does County Highway over Elm River carry?

About 10 vehicles per day (2019 count).

How long is County Highway over Elm River?

The structure is 40 ft (12.2 m) long with a longest span of 37 ft (11.3 m) and a deck 24 ft wide.

Who owns County Highway over Elm River?

It is owned by the County Highway Agency.