US Bridges

S 204-STAGE RD over Milk River

Fair

Phillips County, Montana · 1M S Dodson · Structure no. S00204001+03001

Built
1954
71 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
244 ft
3 main spans
Daily traffic
91
2023 count
Owner
State
State Highway Agency

About this bridge

S 204-STAGE RD over Milk River is a steel continuous stringer/multi-beam or girder carrying S 204-STAGE RD over Milk River in Phillips 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 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 91 vehicles a day, roughly 2% of them trucks, projected to reach 96 by 2043. The structure is 244 ft (74.3 m) long and 27 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesS 204-STAGE RD
CrossesMilk River
Location1M S Dodson
RouteState Highway 204
StateMontana
Coordinates48.37933, -108.24961
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39 US tons
Inventory rating24 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length244 ft (74.3 m)
Longest span92 ft (28 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91 (2023)
Projected traffic96 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 204-STAGE RD over Milk River built?

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

What condition is S 204-STAGE RD over Milk 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 June 2024.

How much traffic does S 204-STAGE RD over Milk River carry?

About 91 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S 204-STAGE RD over Milk River?

The structure is 244 ft (74.3 m) long with a longest span of 92 ft (28 m) and a deck 27 ft wide.

Who owns S 204-STAGE RD over Milk River?

It is owned by the State Highway Agency.