477th Avenue over Big Sioux River

Good Condition35 years old50 vehicles/day

Location

StateSouth Dakota
CountyMoody
Location0.5n Of Trent
Carries477th Avenue
CrossesBig Sioux River
Coordinates43.91477, -96.66822

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway8 (Very Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length222.1 ft (67.7 m)
Max Span47.9 ft (14.6 m)
Deck Width30.8 ft (9.4 m)
Deck Area636.4 sq m
Main Spans5
Year Built1991

Traffic

Avg Daily Traffic50 (2022)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last Inspection824
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number000000051110195

Nearby Bridges

240th Street over Big Sioux River 0.7 mi Fair 478th Avenue over Brookfield Creek 1.6 mi Fair 240th Street over Brookfield Creek 2.1 mi Good 475th Avenue over Bachelor Creek 2.1 mi Fair 238th Street over Trib. To Bachelor Creek 2.9 mi Poor 237th Street over Big Sioux River 2.9 mi Poor 474th Avenue over Bachelor Creek 3.1 mi Good 242nd Street over Big Sioux River 3.2 mi Poor 238th Street over Brookfield Creek 3.9 mi Poor 240 ST (fas 6334) over I029 4.5 mi Fair