US Bridges

Hammond RD over Corral Creek

Fair

Carter County, Montana · 29M NE Hammond · Structure no. S00277029+00001

Built
2000
25 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
113 ft
3 main spans
Daily traffic
32
2023 count
Owner
County
County Highway Agency

About this bridge

Hammond RD over Corral Creek is a prestressed concrete stringer/multi-beam or girder carrying Hammond RD over Corral Creek in Carter 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 32 vehicles a day, roughly 9% of them trucks, projected to reach 34 by 2043. The structure is 113 ft (34.5 m) long and 31 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesHammond RD
CrossesCorral Creek
Location29M NE Hammond
RouteCounty Highway 277
CountyCarter County
StateMontana
Coordinates45.48139, -104.50928
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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.9 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length113 ft (34.5 m)
Longest span38 ft (11.5 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2023)
Projected traffic34 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 Hammond RD over Corral Creek built?

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

What condition is Hammond RD over Corral 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 August 2023.

How much traffic does Hammond RD over Corral Creek carry?

About 32 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Hammond RD over Corral Creek?

The structure is 113 ft (34.5 m) long with a longest span of 38 ft (11.5 m) and a deck 31 ft wide.

Who owns Hammond RD over Corral Creek?

It is owned by the County Highway Agency.