US Bridges

46340 304 St. over Vermillion Rv

Good

Clay County, South Dakota · 2.0S & 8.3E Wakonda · Structure no. 000000014114070

Built
1996
29 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
117 ft
3 main spans
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

46340 304 St. over Vermillion Rv is a concrete continuous slab carrying 46340 304 St. over Vermillion Rv in Clay County, South Dakota. It was built in 1996, so it is 29 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 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 117 ft (35.7 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Carries46340 304 St.
CrossesVermillion Rv
Location2.0S & 8.3E Wakonda
RouteCounty Highway 0
Coordinates42.98244, -96.93832
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating73.4 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length117 ft (35.7 m)
Longest span45 ft (13.6 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2022)
Projected traffic35 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 46340 304 St. over Vermillion Rv built?

It was built in 1996, making it 29 years old in 2025.

What condition is 46340 304 St. over Vermillion Rv 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 2024.

How much traffic does 46340 304 St. over Vermillion Rv carry?

About 35 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 46340 304 St. over Vermillion Rv?

The structure is 117 ft (35.7 m) long with a longest span of 45 ft (13.6 m) and a deck 29 ft wide.

Who owns 46340 304 St. over Vermillion Rv?

It is owned by the County Highway Agency.