I 90 over Blackfoot River

Good Condition8 years old6,216 vehicles/day

Location

StateMontana
CountyMissoula
Location0.6m W Bonner
CarriesI 90
CrossesBlackfoot River
Coordinates46.87174, -113.88693

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure8 (Very Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length486.2 ft (148.2 m)
Max Span210.0 ft (64 m)
Deck Width40.4 ft (12.3 m)
Deck Area1822.9 sq m
Main Spans3
Year Built2018

Traffic

Avg Daily Traffic6,216 (2023)
Truck Traffic19%
Lanes On Bridge2

Inspection & Ownership

Last Inspection524
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000000001434

Nearby Bridges

I 90 over Black Foot River 0.0 mi Good I 90 over Rr 0.2 mi Fair S 200 over Blackfoot River 0.2 mi Fair I 90 over Rr 0.2 mi Fair S 200 over Int Bonner I 90 0.5 mi Fair I 90 over Abandoned Railroad 0.7 mi Fair I 90 WB over Abandoned Railroad 0.7 mi Fair S 210 over Mrl Spur (not In Use) 0.8 mi Fair I 90 over Sep Juniper Dr-clark Fk 1.2 mi Fair I 90 over Sep Juniper Dr-clark Fk 1.2 mi Fair