US Bridges

S Wagner Road over Milk River

Fair

Phillips County, Montana · 1M S Wagner · Structure no. S00363001+03001

Built
2000
25 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
297 ft
3 main spans
Daily traffic
79
2023 count
Owner
County
County Highway Agency

About this bridge

S Wagner Road over Milk River is a prestressed concrete stringer/multi-beam or girder carrying S Wagner Road over Milk River in Phillips County, Montana. It was built in 2000, so it is 25 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 79 vehicles a day, roughly 3% of them trucks, projected to reach 83 by 2043. The structure is 297 ft (90.4 m) long and 30 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesS Wagner Road
CrossesMilk River
Location1M S Wagner
RouteCounty Highway 363
StateMontana
Coordinates48.36211, -108.08383
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating38 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length297 ft (90.4 m)
Longest span110 ft (33.4 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79 (2023)
Projected traffic83 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S Wagner Road over Milk River built?

It was built in 2000, making it 25 years old in 2025.

What condition is S Wagner Road 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 March 2024.

How much traffic does S Wagner Road over Milk River carry?

About 79 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S Wagner Road over Milk River?

The structure is 297 ft (90.4 m) long with a longest span of 110 ft (33.4 m) and a deck 30 ft wide.

Who owns S Wagner Road over Milk River?

It is owned by the County Highway Agency.