IRR Ar Sd020 over Lyon Ck

Fair Condition64 years old125 vehicles/day

Location

StateSouth Dakota
CountyPerkins
Location0.9 W Ziebach Co Line
CarriesIRR Ar Sd020
CrossesLyon Ck
Coordinates45.44343, -102.01641

Condition Ratings

Overall ConditionFair
Channel/Waterway8 (Very Good)
Culvert6 (Satisfactory)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length24.6 ft (7.5 m)
Max Span12.1 ft (3.7 m)
Deck Area68.2 sq m
Main Spans2
Year Built1962

Traffic

Avg Daily Traffic125 (2024)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000053454350