US Bridges

County Highway over Rush River

Fair

Cass County, North Dakota · 5 East 3 South of Amenia · Structure no. 000000009128190

Built
1998
27 years old, rebuilt 2002
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
2 main spans
Daily traffic
20
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Rush River is a steel stringer/multi-beam or girder carrying County Highway over Rush River in Cass County, North Dakota. It was built in 1998 and reconstructed in 2002, 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 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, projected to reach 20 by 2039. The structure is 67 ft (20.4 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Highway
CrossesRush River
Location5 East 3 South of Amenia
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates46.96362, -97.11537
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span32 ft (9.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic20 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 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 1998, making it 27 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 2023.

How much traffic does County Highway over Rush River carry?

About 20 vehicles per day (2019 count).

How long is County Highway over Rush River?

The structure is 67 ft (20.4 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.

Who owns County Highway over Rush River?

It is owned by the County Highway Agency.