US Bridges

S 72 over Bear Creek

Good

Carbon County, Montana · Belfry · Structure no. P00072010+06611

Built
2013
12 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
1,732
2023 count
Owner
State
State Highway Agency

About this bridge

S 72 over Bear Creek is a prestressed concrete stringer/multi-beam or girder carrying S 72 over Bear Creek in Carbon County, Montana. It was built in 2013, so it is 12 years old, younger than the Montana average of 47 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 1,732 vehicles a day, roughly 9% of them trucks, projected to reach 1,819 by 2043. The structure is 104 ft (31.6 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesS 72
CrossesBear Creek
LocationBelfry
RouteState Highway 92
StateMontana
Coordinates45.14363, -109.01101
Functional classRural Minor Arterial

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating39 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length104 ft (31.6 m)
Longest span99 ft (30.2 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,732 (2023)
Projected traffic1,819 by 2043
Trucks9%
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

OwnerState Highway Agency
Maintained byState 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 S 72 over Bear Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is S 72 over Bear 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 S 72 over Bear Creek carry?

About 1,732 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is S 72 over Bear Creek?

The structure is 104 ft (31.6 m) long with a longest span of 99 ft (30.2 m) and a deck 43 ft wide.

Who owns S 72 over Bear Creek?

It is owned by the State Highway Agency.