US Bridges

E Rosebud RD over East Rosebud Creek 017

Fair

Carbon County, Montana · Roscoe · Structure no. L05503000+01001

Built
2010
15 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
76
2023 count
Owner
County
County Highway Agency

About this bridge

E Rosebud RD over East Rosebud Creek 017 is a prestressed concrete tee beam carrying E Rosebud RD over East Rosebud Creek 017 in Carbon County, Montana. It was built in 2010, so it is 15 years old, younger 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 76 vehicles a day, roughly 3% of them trucks, projected to reach 80 by 2043. The structure is 77 ft (23.5 m) long and 27 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesE Rosebud RD
CrossesEast Rosebud Creek 017
LocationRoscoe
RouteCounty Highway 5007
CountyCarbon County
StateMontana
Coordinates45.34951, -109.49594
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating37.8 US tons
Inventory rating20.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span77 ft (23.5 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76 (2023)
Projected traffic80 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$198,000
NavigationNo navigation control on waterway

Frequently asked questions

When was E Rosebud RD over East Rosebud Creek 017 built?

It was built in 2010, making it 15 years old in 2025.

What condition is E Rosebud RD over East Rosebud Creek 017 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 September 2023.

How much traffic does E Rosebud RD over East Rosebud Creek 017 carry?

About 76 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is E Rosebud RD over East Rosebud Creek 017?

The structure is 77 ft (23.5 m) long with a longest span of 77 ft (23.5 m) and a deck 27 ft wide.

Who owns E Rosebud RD over East Rosebud Creek 017?

It is owned by the County Highway Agency.