US Bridges

Little Horn RD over Little Bighorn River 072

Fair

Big Horn County, Montana · 8M SW Wyola · Structure no. L02202009+07001

Built
1952
73 years old
Condition
Fair
inspected March 2024
Type
Truss - Thru
Steel
Length
92 ft
1 main span
Daily traffic
183
2023 count
Owner
County
County Highway Agency

About this bridge

Little Horn RD over Little Bighorn River 072 is a steel truss - thru carrying Little Horn RD over Little Bighorn River 072 in Big Horn County, Montana. It was built in 1952, so it is 73 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 183 vehicles a day, roughly 3% of them trucks, projected to reach 193 by 2043. The structure is 92 ft (28 m) long and 18 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesLittle Horn RD
CrossesLittle Bighorn River 072
Location8M SW Wyola
RouteCounty Highway 2202
StateMontana
Coordinates45.05711, -107.53124
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating22.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic183 (2023)
Projected traffic193 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$152,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Little Horn RD over Little Bighorn River 072 built?

It was built in 1952, making it 73 years old in 2025.

What condition is Little Horn RD over Little Bighorn River 072 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 March 2024.

How much traffic does Little Horn RD over Little Bighorn River 072 carry?

About 183 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Little Horn RD over Little Bighorn River 072?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 18 ft wide.

Who owns Little Horn RD over Little Bighorn River 072?

It is owned by the County Highway Agency.