US Bridges

US Highway 12 over BNSF RR

Good

Bowman County, North Dakota · NW of Gascoyne · Structure no. 0012049406

Built
2001
24 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
376 ft
3 main spans
Daily traffic
750
2019 count
Owner
State
State Highway Agency

About this bridge

US Highway 12 over BNSF RR is a prestressed concrete continuous stringer/multi-beam or girder carrying US Highway 12 over BNSF RR in Bowman County, North Dakota. It was built in 2001, so it is 24 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 750 vehicles a day, roughly 21% of them trucks, projected to reach 1,030 by 2039. The structure is 376 ft (114.6 m) long and 43 ft wide. If it were closed, the detour would be 57.8 mi (93 km).

CarriesUS Highway 12
CrossesBNSF RR
LocationNW of Gascoyne
RouteU.S. Route 12
Coordinates46.12351, -103.09182
Functional classRural Principal Arterial - Other

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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating63.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length376 ft (114.6 m)
Longest span147 ft (44.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2019)
Projected traffic1,030 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed57.8 mi (93 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US Highway 12 over BNSF RR built?

It was built in 2001, making it 24 years old in 2025.

What condition is US Highway 12 over BNSF RR 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 2024.

How much traffic does US Highway 12 over BNSF RR carry?

About 750 vehicles per day (2019 count), of which roughly 21% are trucks.

How long is US Highway 12 over BNSF RR?

The structure is 376 ft (114.6 m) long with a longest span of 147 ft (44.8 m) and a deck 43 ft wide.

Who owns US Highway 12 over BNSF RR?

It is owned by the State Highway Agency.