US Bridges

S 200 over Cottonwood Creek

Good

Powell County, Montana · 7M W Ovando · Structure no. P00024037+03001

Built
1954
71 years old
Condition
Good
inspected January 2025
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
2,822
2023 count
Owner
State
State Highway Agency

About this bridge

S 200 over Cottonwood Creek is a steel culvert carrying S 200 over Cottonwood Creek in Powell County, Montana. It was built in 1954, so it is 71 years old, older 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 2,822 vehicles a day, roughly 6% of them trucks, projected to reach 2,963 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesS 200
CrossesCottonwood Creek
Location7M W Ovando
RouteState Highway 200
StateMontana
Coordinates47.03029, -113.27294
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,822 (2023)
Projected traffic2,963 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$132,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S 200 over Cottonwood Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is S 200 over Cottonwood Creek 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 January 2025.

How much traffic does S 200 over Cottonwood Creek carry?

About 2,822 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is S 200 over Cottonwood Creek?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns S 200 over Cottonwood Creek?

It is owned by the State Highway Agency.