S 200 over Blackfoot River

Fair Condition58 years old4,627 vehicles/day

Location

StateMontana
CountyMissoula
Location4m E Bonner
CarriesS 200
CrossesBlackfoot River
Coordinates46.89320, -113.77661

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length449.8 ft (137.1 m)
Max Span85.0 ft (25.9 m)
Deck Width34.1 ft (10.4 m)
Deck Area1425.8 sq m
Main Spans6
Year Built1968 (reconstructed 2002)

Traffic

Avg Daily Traffic4,627 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberP00024005+05011

Nearby Bridges

I 90 WB over Sep Rustic Road 4.7 mi Fair I 90 WB over Int Turah 4.7 mi Fair I 90 EB over Sep Rustic Road 4.7 mi Fair I 90 EB over Int Turah 4.7 mi Fair S 210 over Mrl Spur (not In Use) 4.9 mi Fair S 200 EB over Blackfoot River 4.9 mi Fair S 200 over Blackfoot River 4.9 mi Fair I 90 WB over Abandoned Railroad 5.0 mi Fair Turah RD over Clark Fork 103 5.0 mi Poor I 90 over Abandoned Railroad 5.0 mi Fair