US Bridges

County Highway over Rush River

Fair

Cass County, North Dakota · 6 West 3 North of Arthur · Structure no. 000000009118060

Built
1956
69 years old, rebuilt 2002
Condition
Fair
inspected May 2021
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
525
2020 count
Owner
County
County Highway Agency

About this bridge

County Highway over Rush River is a concrete culvert carrying County Highway over Rush River in Cass County, North Dakota. It was built in 1956 and reconstructed in 2002, so it is 69 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 525 vehicles a day, roughly 12% of them trucks, projected to reach 500 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Highway
CrossesRush River
Location6 West 3 North of Arthur
RouteCounty Highway 910
CountyCass County
StateNorth Dakota
Coordinates47.15183, -97.33955
Functional classRural Major Collector

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 inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99.5 US tons
Inventory rating59.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2020)
Projected traffic500 by 2040
Trucks12%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Rush River built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2002.

What condition is County Highway over Rush 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 May 2021.

How much traffic does County Highway over Rush River carry?

About 525 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is County Highway over Rush River?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns County Highway over Rush River?

It is owned by the County Highway Agency.