US Bridges

320 Avenue over South Medicine Ck

Good

Hughes County, South Dakota · 0.3W 1.4S Harrold · Structure no. 000000033410024

Built
2022
3 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
60 ft
5 main spans
Daily traffic
157
2022 count
Owner
County
County Highway Agency

About this bridge

320 Avenue over South Medicine Ck is a concrete continuous culvert carrying 320 Avenue over South Medicine Ck in Hughes County, South Dakota. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 157 vehicles a day, roughly 3% of them trucks, projected to reach 157 by 2032. The structure is 60 ft (18.2 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Carries320 Avenue
CrossesSouth Medicine Ck
Location0.3W 1.4S Harrold
RouteCounty Highway 0
Coordinates44.50692, -99.74472
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating56.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHL 93
Structure length60 ft (18.2 m)
Longest span11 ft (3.5 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic157 (2022)
Projected traffic157 by 2032
Trucks3%
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

OwnerCounty Highway Agency
Maintained byCounty 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 320 Avenue over South Medicine Ck built?

It was built in 2022, making it 3 years old in 2025.

What condition is 320 Avenue over South Medicine 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 June 2024.

How much traffic does 320 Avenue over South Medicine Ck carry?

About 157 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 320 Avenue over South Medicine Ck?

The structure is 60 ft (18.2 m) long with a longest span of 11 ft (3.5 m) and a deck 32 ft wide.

Who owns 320 Avenue over South Medicine Ck?

It is owned by the County Highway Agency.