US Bridges

S 200S-TOWNE ST over Yellowstone River

Fair

Dawson County, Montana · Glendive-Towne ST · Structure no. P00057327+03371

Built
1958
67 years old
Condition
Fair
inspected May 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
1,323 ft
8 main spans
Daily traffic
8,821
2023 count
Owner
State
State Highway Agency

About this bridge

S 200S-TOWNE ST over Yellowstone River is a steel continuous girder and floorbeam system carrying S 200S-TOWNE ST over Yellowstone River 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 5 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 8,821 vehicles a day, projected to reach 9,262 by 2043. The structure is 1,323 ft (403.1 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesS 200S-TOWNE ST
CrossesYellowstone River
LocationGlendive-Towne ST
RouteState Highway 200
CountyDawson County
StateMontana
Coordinates47.10729, -104.72086
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.3 US tons
Inventory rating27.1 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length1,323 ft (403.1 m)
Longest span183 ft (55.8 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,821 (2023)
Projected traffic9,262 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S 200S-TOWNE ST over Yellowstone River built?

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

What condition is S 200S-TOWNE ST over Yellowstone River 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 May 2023.

How much traffic does S 200S-TOWNE ST over Yellowstone River carry?

About 8,821 vehicles per day (2023 count).

How long is S 200S-TOWNE ST over Yellowstone River?

The structure is 1,323 ft (403.1 m) long with a longest span of 183 ft (55.8 m) and a deck 36 ft wide.

Who owns S 200S-TOWNE ST over Yellowstone River?

It is owned by the State Highway Agency.