US Bridges

SD025 over Ck

Fair

Bon Homme County, South Dakota · 3.7 S of Scotland · Structure no. 000000005230057

Built
1920
105 years old, rebuilt 1940
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
853
2024 count
Owner
State
State Highway Agency

About this bridge

SD025 over Ck is a concrete continuous culvert carrying SD025 over Ck in Bon Homme County, South Dakota. It was built in 1920 and reconstructed in 1940, so it is 105 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 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 853 vehicles a day, roughly 14% of them trucks, projected to reach 1,253 by 2044. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSD025
CrossesCk
Location3.7 S of Scotland
RouteState Highway 25
Coordinates43.08778, -97.71496
Functional classRural Minor Arterial

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 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 15
Structure length20 ft (6.2 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 traffic853 (2024)
Projected traffic1,253 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$12,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SD025 over Ck built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1940.

What condition is SD025 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 July 2023.

How much traffic does SD025 over Ck carry?

About 853 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is SD025 over Ck?

The structure is 20 ft (6.2 m) long with a longest span of 10 ft (3 m).

Who owns SD025 over Ck?

It is owned by the State Highway Agency.