US Bridges

S 332 over Pumpkin Creek

Fair

Custer County, Montana · 12M S Miles City · Structure no. S00332000+09001

Built
1959
66 years old, rebuilt 1973
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
139 ft
3 main spans
Daily traffic
199
2023 count
Owner
State
State Highway Agency

About this bridge

S 332 over Pumpkin Creek is a prestressed concrete stringer/multi-beam or girder carrying S 332 over Pumpkin Creek in Custer County, Montana. It was built in 1959 and reconstructed in 1973, so it is 66 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 199 vehicles a day, roughly 7% of them trucks, projected to reach 209 by 2043. The structure is 139 ft (42.4 m) long and 27 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesS 332
CrossesPumpkin Creek
Location12M S Miles City
RouteState Highway 332
CountyCuster County
StateMontana
Coordinates46.24709, -105.74781
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length139 ft (42.4 m)
Longest span47 ft (14.3 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic199 (2023)
Projected traffic209 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 332 over Pumpkin Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1973.

What condition is S 332 over Pumpkin Creek 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 April 2023.

How much traffic does S 332 over Pumpkin Creek carry?

About 199 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is S 332 over Pumpkin Creek?

The structure is 139 ft (42.4 m) long with a longest span of 47 ft (14.3 m) and a deck 27 ft wide.

Who owns S 332 over Pumpkin Creek?

It is owned by the State Highway Agency.