I 90 over Madison River Overflow

Fair Condition63 years old9,762 vehicles/day

Location

StateMontana
CountyGallatin
Location2.5m E Three Forks
CarriesI 90
CrossesMadison River Overflow
Coordinates45.89627, -111.49941

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length91.5 ft (27.9 m)
Max Span45.6 ft (13.9 m)
Deck Width40.7 ft (12.4 m)
Deck Area346.0 sq m
Main Spans2
Year Built1963

Traffic

Avg Daily Traffic9,762 (2023)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last Inspection124
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00090280+00731

Nearby Bridges

I 90 over Madison River Overflow 0.0 mi Fair I 90 over Madison Road 0.3 mi Fair I 90 over Madison Road 0.3 mi Fair I 90 over Darlington Ditch 0.5 mi Fair I 90 over Darlington Ditch 0.5 mi Fair S 205-frontage RD over Mid Fork Madison River 0.7 mi Fair I 90 over Madison River-rr 1.2 mi Fair I 90 over Madison River-rr 1.2 mi Fair S 205-frontage RD over Madison River 1.3 mi Fair S 2 over E Three Forks Int I 90 1.7 mi Fair