US Bridges

24940 416 Avenue over Rock Ck

Good

Hanson County, South Dakota · 3 W & 2.6 N Fulton · Structure no. 000000031040054

Built
2003
22 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

24940 416 Avenue over Rock Ck is a prestressed concrete stringer/multi-beam or girder carrying 24940 416 Avenue over Rock Ck in Hanson County, South Dakota. It was built in 2003, so it is 22 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 15 vehicles a day, roughly 9% of them trucks, projected to reach 18 by 2032. The structure is 71 ft (21.6 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries24940 416 Avenue
CrossesRock Ck
Location3 W & 2.6 N Fulton
RouteCounty Highway 0
Coordinates43.76956, -97.88942
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating39.7 US tons
Inventory rating30.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length71 ft (21.6 m)
Longest span70 ft (21.3 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic18 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 24940 416 Avenue over Rock Ck built?

It was built in 2003, making it 22 years old in 2025.

What condition is 24940 416 Avenue over Rock 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 July 2023.

How much traffic does 24940 416 Avenue over Rock Ck carry?

About 15 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is 24940 416 Avenue over Rock Ck?

The structure is 71 ft (21.6 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.

Who owns 24940 416 Avenue over Rock Ck?

It is owned by the County Highway Agency.