US Bridges

County Highway over Blacktail Creek

Good

Williams County, North Dakota · 7 East Bonetrail · Structure no. 000000053117151

Built
2021
4 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
27 ft
3 main spans
Daily traffic
175
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Blacktail Creek is a concrete culvert carrying County Highway over Blacktail Creek in Williams County, North Dakota. It was built in 2021, so it is 4 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 175 vehicles a day, roughly 10% of them trucks, projected to reach 260 by 2041. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 24.9 mi (40 km).

CarriesCounty Highway
CrossesBlacktail Creek
Location7 East Bonetrail
RouteCounty Highway 5316
Coordinates48.41638, -103.70028
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating41.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length27 ft (8.2 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 traffic175 (2019)
Projected traffic260 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 Blacktail Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is County Highway over Blacktail 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 Highway over Blacktail Creek carry?

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

How long is County Highway over Blacktail Creek?

The structure is 27 ft (8.2 m) long with a longest span of 10 ft (3 m).

Who owns County Highway over Blacktail Creek?

It is owned by the County Highway Agency.