US Bridges

US012 over BNSF RR

Good

Edmunds County, South Dakota · 0.5 E of Roscoe · Structure no. 000000023186100

Built
2006
19 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
3 main spans
Daily traffic
2,068
2024 count
Owner
State
State Highway Agency

About this bridge

US012 over BNSF RR is a steel continuous stringer/multi-beam or girder carrying US012 over BNSF RR in Edmunds County, South Dakota. It was built in 2006, so it is 19 years old, younger than the South Dakota average of 48.9 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 2,068 vehicles a day, roughly 28% of them trucks, projected to reach 2,734 by 2044. The structure is 290 ft (88.5 m) long and 43 ft wide. If it were closed, the detour would be 36 mi (58 km).

CarriesUS012
CrossesBNSF RR
Location0.5 E of Roscoe
RouteU.S. Route 12
Coordinates45.44916, -99.32818
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 geometry6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating82.2 US tons
Inventory rating49.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length290 ft (88.5 m)
Longest span127 ft (38.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,068 (2024)
Projected traffic2,734 by 2044
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed36 mi (58 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 US012 over BNSF RR built?

It was built in 2006, making it 19 years old in 2025.

What condition is US012 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 US012 over BNSF RR carry?

About 2,068 vehicles per day (2024 count), of which roughly 28% are trucks.

How long is US012 over BNSF RR?

The structure is 290 ft (88.5 m) long with a longest span of 127 ft (38.7 m) and a deck 43 ft wide.

Who owns US012 over BNSF RR?

It is owned by the State Highway Agency.