US Bridges

S 200 over Drainage

Fair

Dawson County, Montana · 5M NE Richey · Structure no. P00051032+03501

Built
1958
67 years old
Condition
Fair
inspected January 2025
Type
Culvert
Steel
Length
29 ft
2 main spans
Daily traffic
307
2023 count
Owner
State
State Highway Agency

About this bridge

S 200 over Drainage is a steel culvert carrying S 200 over Drainage in Dawson County, Montana. It was built in 1958, so it is 67 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 307 vehicles a day, roughly 13% of them trucks, projected to reach 322 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesS 200
CrossesDrainage
Location5M NE Richey
RouteState Highway 200
StateMontana
Coordinates47.68469, -104.9835
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic307 (2023)
Projected traffic322 by 2043
Trucks13%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S 200 over Drainage built?

It was built in 1958, making it 67 years old in 2025.

What condition is S 200 over Drainage 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 January 2025.

How much traffic does S 200 over Drainage carry?

About 307 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is S 200 over Drainage?

The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m).

Who owns S 200 over Drainage?

It is owned by the State Highway Agency.