US Bridges

30950 461 Ave over Ck

Fair

Clay County, South Dakota · 12.5S 9.0E Irene Sd · Structure no. 000000014090125

Built
1930
95 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

30950 461 Ave over Ck is a concrete continuous culvert carrying 30950 461 Ave over Ck in Clay County, South Dakota. It was built in 1930, so it is 95 years old, older 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 5 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 25 vehicles a day, roughly 2% of them trucks, projected to reach 97 by 2032. The structure is 26 ft (7.8 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries30950 461 Ave
CrossesCk
Location12.5S 9.0E Irene Sd
RouteCounty Highway 0
CountyClay County
StateSouth Dakota
Coordinates42.90159, -96.98399
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length26 ft (7.8 m)
Longest span8 ft (2.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic97 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 30950 461 Ave over Ck built?

It was built in 1930, making it 95 years old in 2025.

What condition is 30950 461 Ave over 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 August 2024.

How much traffic does 30950 461 Ave over Ck carry?

About 25 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 30950 461 Ave over Ck?

The structure is 26 ft (7.8 m) long with a longest span of 8 ft (2.4 m) and a deck 25 ft wide.

Who owns 30950 461 Ave over Ck?

It is owned by the County Highway Agency.