US Bridges

County Highway over Rush River

Good

Cass County, North Dakota · 2 West of Amenia · Structure no. 000000009121170

Built
2014
11 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
129 ft
3 main spans
Daily traffic
65
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Rush River is a prestressed concrete box beam or girders - single or spread carrying County Highway over Rush River in Cass County, North Dakota. It was built in 2014, so it is 11 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 65 vehicles a day, projected to reach 75 by 2039. The structure is 129 ft (39.3 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesRush River
Location2 West of Amenia
RouteCounty Highway 922
CountyCass County
StateNorth Dakota
Coordinates47.00557, -97.26077
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating39.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length129 ft (39.3 m)
Longest span43 ft (13.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2019)
Projected traffic75 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$59,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Rush River built?

It was built in 2014, making it 11 years old in 2025.

What condition is County Highway over Rush River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does County Highway over Rush River carry?

About 65 vehicles per day (2019 count).

How long is County Highway over Rush River?

The structure is 129 ft (39.3 m) long with a longest span of 43 ft (13.2 m) and a deck 30 ft wide.

Who owns County Highway over Rush River?

It is owned by the County Highway Agency.