I 15 over Sep County RD 203

Fair Condition53 years old1,926 vehicles/day

Location

StateMontana
CountyBeaverhead
Location11.2m S Melrose
CarriesI 15
CrossesSep County RD 203
Coordinates45.43679, -112.70630

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length119.1 ft (36.3 m)
Max Span49.9 ft (15.2 m)
Deck Width44.0 ft (13.4 m)
Deck Area486.4 sq m
Main Spans3
Year Built1973

Traffic

Avg Daily Traffic1,926 (2023)
Truck Traffic24%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last Inspection124
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00015079+00121

Nearby Bridges

I 15 over Sep County RD 203 0.0 mi Good I 15 over Birch Creek 1.7 mi Fair Burma RD over Big Hole River 073 2.9 mi Fair Burma RD over Big Hole River Over 062 3.0 mi Good I 15 over Int Apex-birch CR RD 4.0 mi Fair I 15 over Int Apex-birch CR RD 4.0 mi Fair Birch Creek RD over Birch Creek 4.9 mi Good