US Bridges

US212 over Willow Ck

Fair

Codington County, South Dakota · 1.4 E JCT US 81 · Structure no. 000000015203180

Built
1970
55 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
126 ft
3 main spans
Daily traffic
10,862
2024 count
Owner
State
State Highway Agency

About this bridge

US212 over Willow Ck is a concrete continuous slab carrying US212 over Willow Ck in Codington County, South Dakota. It was built in 1970, so it is 55 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 10,862 vehicles a day, roughly 8% of them trucks, projected to reach 15,554 by 2044. The structure is 126 ft (38.4 m) long and 57 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

CarriesUS212
CrossesWillow Ck
Location1.4 E JCT US 81
RouteU.S. Route 212
Coordinates44.89007, -97.07964
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span46 ft (13.9 m)
Deck width57 ft (17.3 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,862 (2024)
Projected traffic15,554 by 2044
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US212 over Willow Ck built?

It was built in 1970, making it 55 years old in 2025.

What condition is US212 over Willow 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 May 2023.

How much traffic does US212 over Willow Ck carry?

About 10,862 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is US212 over Willow Ck?

The structure is 126 ft (38.4 m) long with a longest span of 46 ft (13.9 m) and a deck 57 ft wide.

Who owns US212 over Willow Ck?

It is owned by the State Highway Agency.