US Bridges

IRR BIA RTE 24 over Rosebud Creek

FairPosted for load

Big Horn County, Montana · 0.3 Miles West of Rosebud · Structure no. 00O00000000C712

Built
2019
6 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
60
2016 count
Owner
Tribal
Indian Tribal Government

About this bridge

IRR BIA RTE 24 over Rosebud Creek is a concrete culvert carrying IRR BIA RTE 24 over Rosebud Creek in Big Horn County, Montana. It was built in 2019, so it is 6 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. Its operating status is: posted for other load-capacity restriction.

It carries about 60 vehicles a day, projected to reach 72 by 2036. The structure is 25 ft (7.5 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesIRR BIA RTE 24
CrossesRosebud Creek
Location0.3 Miles West of Rosebud
StateMontana
Coordinates45.651, -106.7129
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width33 ft (10.2 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2016)
Projected traffic72 by 2036
Trucks0%
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

OwnerIndian Tribal Government
Maintained byIndian Tribal Government
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 IRR BIA RTE 24 over Rosebud Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is IRR BIA RTE 24 over Rosebud Creek 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 August 2023.

How much traffic does IRR BIA RTE 24 over Rosebud Creek carry?

About 60 vehicles per day (2016 count).

How long is IRR BIA RTE 24 over Rosebud Creek?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m) and a deck 33 ft wide.

Who owns IRR BIA RTE 24 over Rosebud Creek?

It is owned by the Indian Tribal Government.