US Bridges

US 212 over RR

Fair

Yellowstone County, Montana · 2M NE Laurel · Structure no. P00004057+07411

Built
1936
89 years old, rebuilt 1988
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
269 ft
3 main spans
Daily traffic
5,606
2023 count
Owner
State
State Highway Agency

About this bridge

US 212 over RR is a steel continuous stringer/multi-beam or girder carrying US 212 over RR in Yellowstone County, Montana. It was built in 1936 and reconstructed in 1988, so it is 89 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,606 vehicles a day, roughly 1% of them trucks, projected to reach 5,886 by 2043. The structure is 269 ft (82 m) long and 35 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesUS 212
CrossesRR
Location2M NE Laurel
RouteU.S. Route 212
CountyYellowstone County
StateMontana
Coordinates45.68264, -108.71389
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length269 ft (82 m)
Longest span115 ft (35.1 m)
Deck width35 ft (10.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,606 (2023)
Projected traffic5,886 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.8 mi (11 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 212 over RR built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1988.

What condition is US 212 over RR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does US 212 over RR carry?

About 5,606 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is US 212 over RR?

The structure is 269 ft (82 m) long with a longest span of 115 ft (35.1 m) and a deck 35 ft wide.

Who owns US 212 over RR?

It is owned by the State Highway Agency.