I 15 over Int Apex-birch CR RD

Fair Condition53 years old1,926 vehicles/day

Location

StateMontana
CountyBeaverhead
Location11.2m N Dillon
CarriesI 15
CrossesInt Apex-birch CR RD
Coordinates45.37849, -112.70879

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure5 (Fair)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length169.9 ft (51.8 m)
Max Span75.1 ft (22.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area694.1 sq m
Main Spans3
Year Built1973

Traffic

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

Inspection & Ownership

Last Inspection225
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberI00015074+09742

Nearby Bridges

I 15 over Int Apex-birch CR RD 0.0 mi Fair I 15 over Birch Creek 2.3 mi Fair Birch Creek RD over Birch Creek 2.9 mi Good I 15 over Sep County RD 203 4.0 mi Fair I 15 over Sep County RD 203 4.0 mi Good