US Bridges

32015 477th Ave over Ck

Good

Union County, South Dakota · 3.9N & 1.3E Elk Point · Structure no. 000000064073231

Built
1997
28 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

32015 477th Ave over Ck is a concrete continuous slab carrying 32015 477th Ave over Ck in Union County, South Dakota. It was built in 1997, so it is 28 years old, younger than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 45 vehicles a day, roughly 2% of them trucks, projected to reach 45 by 2032. The structure is 100 ft (30.5 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries32015 477th Ave
CrossesCk
Location3.9N & 1.3E Elk Point
RouteCounty Highway 0
Coordinates42.74876, -96.65974
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating92 US tons
Inventory rating55.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length100 ft (30.5 m)
Longest span36 ft (11 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 32015 477th Ave over Ck built?

It was built in 1997, making it 28 years old in 2025.

What condition is 32015 477th Ave over Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does 32015 477th Ave over Ck carry?

About 45 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 32015 477th Ave over Ck?

The structure is 100 ft (30.5 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns 32015 477th Ave over Ck?

It is owned by the County Highway Agency.