US Bridges

County Highway over Wild Rice River

Good

Cass County, North Dakota · 1 West of Wild Rice · Structure no. 000000009143340

Built
1986
39 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
241 ft
3 main spans
Daily traffic
175
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Wild Rice River is a prestressed concrete box beam or girders - single or spread carrying County Highway over Wild Rice River in Cass County, North Dakota. It was built in 1986, so it is 39 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 175 vehicles a day, roughly 10% of them trucks, projected to reach 175 by 2039. The structure is 241 ft (73.5 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Highway
CrossesWild Rice River
Location1 West of Wild Rice
RouteCounty Highway 946
Coordinates46.74562, -96.81611
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length241 ft (73.5 m)
Longest span80 ft (24.4 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2019)
Projected traffic175 by 2039
Trucks10%
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 Wild Rice River built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Highway over Wild Rice 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 June 2023.

How much traffic does County Highway over Wild Rice River carry?

About 175 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is County Highway over Wild Rice River?

The structure is 241 ft (73.5 m) long with a longest span of 80 ft (24.4 m) and a deck 35 ft wide.

Who owns County Highway over Wild Rice River?

It is owned by the County Highway Agency.