US Bridges

S 7-LOG Cabin RD over Int E Wibaux I 94

Fair

Wibaux County, Montana · Northeast Wibaux · Structure no. P00027080+05991

Built
1962
63 years old, rebuilt 1974
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
251 ft
4 main spans
Daily traffic
100
2025 count
Owner
State
State Highway Agency

About this bridge

S 7-LOG Cabin RD over Int E Wibaux I 94 is a prestressed concrete stringer/multi-beam or girder carrying S 7-LOG Cabin RD over Int E Wibaux I 94 in Wibaux County, Montana. It was built in 1962 and reconstructed in 1974, so it is 63 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 251 ft (76.5 m) long and 27 ft wide.

Location

Open in Google Maps
CarriesS 7-LOG Cabin RD
CrossesInt E Wibaux I 94
LocationNortheast Wibaux
RouteState Highway 5502
CountyWibaux County
StateMontana
Coordinates46.99113, -104.17836
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length251 ft (76.5 m)
Longest span76 ft (23.3 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S 7-LOG Cabin RD over Int E Wibaux I 94 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1974.

What condition is S 7-LOG Cabin RD over Int E Wibaux I 94 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 2023.

How much traffic does S 7-LOG Cabin RD over Int E Wibaux I 94 carry?

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

How long is S 7-LOG Cabin RD over Int E Wibaux I 94?

The structure is 251 ft (76.5 m) long with a longest span of 76 ft (23.3 m) and a deck 27 ft wide.

Who owns S 7-LOG Cabin RD over Int E Wibaux I 94?

It is owned by the State Highway Agency.