US Bridges

474th Ave over Ck

Good

Grant County, South Dakota · 6.8S Sd 20 · Structure no. 000000026230218

Built
2000
25 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
184
2022 count
Owner
County
County Highway Agency

About this bridge

474th Ave over Ck is a concrete continuous culvert carrying 474th Ave over Ck in Grant County, South Dakota. It was built in 2000, so it is 25 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 184 vehicles a day, roughly 2% of them trucks, projected to reach 184 by 2032. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 11.8 mi (19 km).

Carries474th Ave
CrossesCk
Location6.8S Sd 20
RouteCounty Highway 0
Coordinates45.0078, -96.7607
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic184 (2022)
Projected traffic184 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 474th Ave over Ck built?

It was built in 2000, making it 25 years old in 2025.

What condition is 474th 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 September 2022.

How much traffic does 474th Ave over Ck carry?

About 184 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 474th Ave over Ck?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns 474th Ave over Ck?

It is owned by the County Highway Agency.