US 87 over Drainage

Fair Condition96 years old1,148 vehicles/day

Location

StateMontana
CountyFergus
Location12m E Lewistown
CarriesUS 87
CrossesDrainage
Coordinates47.05866, -109.16311

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure5 (Fair)
Substructure6 (Satisfactory)
Channel/Waterway7 (Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length38.1 ft (11.6 m)
Max Span19.0 ft (5.8 m)
Deck Width28.9 ft (8.8 m)
Deck Area102.1 sq m
Main Spans2
Year Built1930 (reconstructed 1937)

Traffic

Avg Daily Traffic1,148 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last Inspection924
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberP00057095+05731