S 200 over Blackfoot River

Fair Condition17 years old8,302 vehicles/day

Location

StateMontana
CountyMissoula
Location1m W Bonner
CarriesS 200
CrossesBlackfoot River
Coordinates46.87296, -113.88372

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure8 (Very Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length347.4 ft (105.9 m)
Max Span127.0 ft (38.7 m)
Deck Width46.3 ft (14.1 m)
Deck Area1493.2 sq m
Main Spans3
Year Built2009

Traffic

Avg Daily Traffic8,302 (2023)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last Inspection624
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberP00024000+05841

Nearby Bridges

I 90 over Black Foot River 0.2 mi Good I 90 over Blackfoot River 0.2 mi Good I 90 over Rr 0.3 mi Fair I 90 over Rr 0.3 mi Fair S 200 over Int Bonner I 90 0.5 mi Fair I 90 WB over Abandoned Railroad 0.7 mi Fair I 90 over Abandoned Railroad 0.7 mi Fair S 210 over Mrl Spur (not In Use) 0.7 mi Fair I 90 over Sep Juniper Dr-clark Fk 1.3 mi Fair I 90 over Sep Juniper Dr-clark Fk 1.3 mi Fair