US Bridges

US385 over Ck

Good

Fall River County, South Dakota · 0.9 N JCT US 18 W · Structure no. 000000024293026

Built
1982
43 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
3,708
2024 count
Owner
State
State Highway Agency

About this bridge

US385 over Ck is a concrete continuous culvert carrying US385 over Ck in Fall River County, South Dakota. It was built in 1982, so it is 43 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,708 vehicles a day, roughly 4% of them trucks, projected to reach 5,510 by 2044. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 21.1 mi (34 km).

CarriesUS385
CrossesCk
Location0.9 N JCT US 18 W
RouteU.S. Route 385
Coordinates43.44055, -103.47792
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating74.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length32 ft (9.8 m)
Longest span16 ft (4.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,708 (2024)
Projected traffic5,510 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 US385 over Ck built?

It was built in 1982, making it 43 years old in 2025.

What condition is US385 over Ck in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does US385 over Ck carry?

About 3,708 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is US385 over Ck?

The structure is 32 ft (9.8 m) long with a longest span of 16 ft (4.8 m).

Who owns US385 over Ck?

It is owned by the State Highway Agency.