US Bridges

County Road 178 over Little Beaver Creek 055

Good

Fallon County, Montana · 12M NE Webster · Structure no. L13051001+03001

Built
2013
12 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

County Road 178 over Little Beaver Creek 055 is a steel stringer/multi-beam or girder carrying County Road 178 over Little Beaver Creek 055 in Fallon 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 60 ft (18.3 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty Road 178
CrossesLittle Beaver Creek 055
Location12M NE Webster
RouteCounty Highway 13178
CountyFallon County
StateMontana
Coordinates46.20156, -104.09833
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating49.3 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
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

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$93,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 178 over Little Beaver Creek 055 built?

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

What condition is County Road 178 over Little Beaver Creek 055 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 September 2023.

How much traffic does County Road 178 over Little Beaver Creek 055 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is County Road 178 over Little Beaver Creek 055?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.

Who owns County Road 178 over Little Beaver Creek 055?

It is owned by the County Highway Agency.