US Bridges

Blacktail Rd. over Beaver Creek

Good

Golden Valley County, North Dakota · 2 South 10 East Trotters · Structure no. 000000017116030

Built
1985
40 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
146 ft
3 main spans
Daily traffic
40
2019 count
Owner
County
County Highway Agency

About this bridge

Blacktail Rd. over Beaver Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Blacktail Rd. over Beaver Creek in Golden Valley 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 40 vehicles a day, projected to reach 40 by 2039. The structure is 146 ft (44.5 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBlacktail Rd.
CrossesBeaver Creek
Location2 South 10 East Trotters
RouteFederal Lands Road 0
CountyGolden Valley County
StateNorth Dakota
Coordinates47.28201, -103.71609
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionMay 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span53 ft (16.2 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2019)
Projected traffic40 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Blacktail Rd. over Beaver Creek built?

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

What condition is Blacktail Rd. over Beaver 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 May 2023.

How much traffic does Blacktail Rd. over Beaver Creek carry?

About 40 vehicles per day (2019 count).

How long is Blacktail Rd. over Beaver Creek?

The structure is 146 ft (44.5 m) long with a longest span of 53 ft (16.2 m) and a deck 30 ft wide.

Who owns Blacktail Rd. over Beaver Creek?

It is owned by the County Highway Agency.