US Bridges

County Hiway over Buffalo Creek

Good

Cass County, North Dakota · 4 South of Wheatland · Structure no. 000000009117280

Built
1985
40 years old
Condition
Good
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
205
2019 count
Owner
County
County Highway Agency

About this bridge

County Hiway over Buffalo Creek is a prestressed concrete tee beam carrying County Hiway over Buffalo Creek in Cass County, North Dakota. It was built in 1985, so it is 40 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 205 vehicles a day, roughly 14% of them trucks, projected to reach 150 by 2039. The structure is 56 ft (17.1 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Hiway
CrossesBuffalo Creek
Location4 South of Wheatland
RouteCounty Highway 921
CountyCass County
StateNorth Dakota
Coordinates46.83388, -97.34563
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating34.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span53 ft (16.2 m)
Deck width36 ft (11 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic205 (2019)
Projected traffic150 by 2039
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Hiway over Buffalo Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is County Hiway over Buffalo Creek 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 July 2023.

How much traffic does County Hiway over Buffalo Creek carry?

About 205 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is County Hiway over Buffalo Creek?

The structure is 56 ft (17.1 m) long with a longest span of 53 ft (16.2 m) and a deck 36 ft wide.

Who owns County Hiway over Buffalo Creek?

It is owned by the County Highway Agency.