US Bridges

US385 over Horsehead Ck

Good

Fall River County, South Dakota · 4.9 S of JCT US18EAST · Structure no. 000000024421250

Built
2014
11 years old
Condition
Good
inspected September 2022
Type
Slab
Concrete Continuous
Length
135 ft
3 main spans
Daily traffic
673
2023 count
Owner
State
State Highway Agency

About this bridge

US385 over Horsehead Ck is a concrete continuous slab carrying US385 over Horsehead Ck in Fall River County, South Dakota. It was built in 2014, so it is 11 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 673 vehicles a day, roughly 21% of them trucks, projected to reach 853 by 2043. The structure is 135 ft (41 m) long and 39 ft wide.

CarriesUS385
CrossesHorsehead Ck
Location4.9 S of JCT US18EAST
RouteU.S. Route 385
Coordinates43.11613, -103.22831
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length135 ft (41 m)
Longest span51 ft (15.5 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic673 (2023)
Projected traffic853 by 2043
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Horsehead Ck built?

It was built in 2014, making it 11 years old in 2025.

What condition is US385 over Horsehead 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 September 2022.

How much traffic does US385 over Horsehead Ck carry?

About 673 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is US385 over Horsehead Ck?

The structure is 135 ft (41 m) long with a longest span of 51 ft (15.5 m) and a deck 39 ft wide.

Who owns US385 over Horsehead Ck?

It is owned by the State Highway Agency.