US Bridges

Cora Creek RD over Cora Creek 075

Fair

Cascade County, Montana · 7M SE Belt · Structure no. L07241004+04001

Built
1950
75 years old, rebuilt 1964
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Cora Creek RD over Cora Creek 075 is a steel stringer/multi-beam or girder carrying Cora Creek RD over Cora Creek 075 in Cascade County, Montana. It was built in 1950 and reconstructed in 1964, so it is 75 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 31 ft (9.4 m) long and 18 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesCora Creek RD
CrossesCora Creek 075
Location7M SE Belt
RouteCounty Highway 7241
StateMontana
Coordinates47.34497, -110.81273
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 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 rating58 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span28 ft (8.5 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 Cora Creek RD over Cora Creek 075 built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1964.

What condition is Cora Creek RD over Cora Creek 075 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 Cora Creek RD over Cora Creek 075 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Cora Creek RD over Cora Creek 075?

The structure is 31 ft (9.4 m) long with a longest span of 28 ft (8.5 m) and a deck 18 ft wide.

Who owns Cora Creek RD over Cora Creek 075?

It is owned by the County Highway Agency.