US Bridges

24470 422 Ave. over Rock Ck

Fair

Hanson County, South Dakota · 3 E & 7.3 N Fulton · Structure no. 000000031100007

Built
2008
17 years old
Condition
Fair
inspected July 2023
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

24470 422 Ave. over Rock Ck is a steel culvert carrying 24470 422 Ave. over Rock Ck in Hanson County, South Dakota. It was built in 2008, so it is 17 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15 vehicles a day, roughly 2% of them trucks, projected to reach 15 by 2032. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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Carries24470 422 Ave.
CrossesRock Ck
Location3 E & 7.3 N Fulton
RouteCounty Highway 0
CountyHanson County
StateSouth Dakota
Coordinates43.83723, -97.76807
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating103 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHL 93
Structure length22 ft (6.8 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 traffic15 (2022)
Projected traffic15 by 2032
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 24470 422 Ave. over Rock Ck built?

It was built in 2008, making it 17 years old in 2025.

What condition is 24470 422 Ave. over Rock Ck in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does 24470 422 Ave. over Rock Ck carry?

About 15 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 24470 422 Ave. over Rock Ck?

The structure is 22 ft (6.8 m) long with a longest span of 10 ft (3 m).

Who owns 24470 422 Ave. over Rock Ck?

It is owned by the County Highway Agency.