US Bridges

Sunny Bank RD over S Fk Sandstone Creek 044

Fair

Fallon County, Montana · 9M SE Plevna · Structure no. L13301002+01001

Built
2013
12 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Sunny Bank RD over S Fk Sandstone Creek 044 is a concrete culvert carrying Sunny Bank RD over S Fk Sandstone Creek 044 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSunny Bank RD
CrossesS Fk Sandstone Creek 044
Location9M SE Plevna
RouteCounty Highway 13103
CountyFallon County
StateMontana
Coordinates46.31019, -104.44922
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating41 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 width0 ft (0 m)
Roadway width0 ft (0 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 closed8.1 mi (13 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$155,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Sunny Bank RD over S Fk Sandstone Creek 044 built?

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

What condition is Sunny Bank RD over S Fk Sandstone Creek 044 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 October 2023.

How much traffic does Sunny Bank RD over S Fk Sandstone Creek 044 carry?

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

How long is Sunny Bank RD over S Fk Sandstone Creek 044?

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

Who owns Sunny Bank RD over S Fk Sandstone Creek 044?

It is owned by the County Highway Agency.