US Bridges

IRR US212 over Ck

Fair

Ziebach County, South Dakota · 0.4 E JCT Sd 65 N · Structure no. 000000069224292

Built
1954
71 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
1,291
2024 count
Owner
State
State Highway Agency

About this bridge

IRR US212 over Ck is a concrete continuous culvert carrying IRR US212 over Ck in Ziebach County, South Dakota. It was built in 1954, so it is 71 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 1,291 vehicles a day, roughly 8% of them trucks, projected to reach 1,957 by 2044. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 51 mi (82 km).

CarriesIRR US212
CrossesCk
Location0.4 E JCT Sd 65 N
RouteU.S. Route 212
Coordinates45.05097, -101.56086
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 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 loadH 15
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,291 (2024)
Projected traffic1,957 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed51 mi (82 km)
TollOn a free road
National Highway SystemYes

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$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR US212 over Ck built?

It was built in 1954, making it 71 years old in 2025.

What condition is IRR US212 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 March 2023.

How much traffic does IRR US212 over Ck carry?

About 1,291 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is IRR US212 over Ck?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns IRR US212 over Ck?

It is owned by the State Highway Agency.