401st Avenue over North Br Twelve Mile Ck

Poor Condition101 years old53 vehicles/day

Location

State	South Dakota
County	Davison
Location	10 W & 1.2 N Ethan
Carries	401st Avenue
Crosses	North Br Twelve Mile Ck
Coordinates	43.55727, -98.18496

Condition Ratings

Overall Condition	Poor
Channel/Waterway	6 (Satisfactory)
Culvert	4 (Poor)
Scour Critical	8 — Stable, low risk

Physical Characteristics

Material	Concrete
Design	Culvert
Total Length	32.2 ft (9.8 m)
Max Span	14.1 ft (4.3 m)
Deck Width	31.2 ft (9.5 m)
Deck Area	93.1 sq m
Main Spans	3
Year Built	1925 (reconstructed 1965)

Traffic

Avg Daily Traffic	53 (2022)
Truck Traffic	2%
Lanes On Bridge	2

Inspection & Ownership

Last Inspection	724
Inspection Frequency	Every 24 months
Owner	County Highway Agency
Historical Significance	Bridge is not eligible for the National Register
Structure Number	000000018070198

Nearby Bridges

264th Sreet over North Br Twelve Mile Ck 0.3 mi Fair 263rd Street over Enemy Ck 0.9 mi Fair 402nd Avenue over North Br Twelve Mile Ck 1.1 mi Fair 402nd Avenue over Enemy Ck 1.7 mi Fair 399th Avenue over North Br Twelve Mile Ck 2.1 mi Poor 403 AVE over North Br Twelve Mile Ck 2.3 mi Good 265th Street over North Br Twelve Mile Ck 2.4 mi Fair 403rd Avenue over Ck 2.5 mi Fair 401st Avenue over Enemy Ck 2.7 mi Good 265th Street over North Br Twelve Mile Ck 2.7 mi Good