US Bridges

466th Avenue over Big Sioux Rv

Good

Brookings County, South Dakota · 1.7N Bruce · Structure no. 000000006120053

Built
2021
4 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
287 ft
4 main spans
Daily traffic
485
2022 count
Owner
County
County Highway Agency

About this bridge

466th Avenue over Big Sioux Rv is a prestressed concrete stringer/multi-beam or girder carrying 466th Avenue over Big Sioux Rv in Brookings County, South Dakota. It was built in 2021, so it is 4 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 485 vehicles a day, roughly 3% of them trucks, projected to reach 485 by 2032. The structure is 287 ft (87.5 m) long and 32 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Carries466th Avenue
CrossesBig Sioux Rv
Location1.7N Bruce
RouteCounty Highway 0
Coordinates44.46754, -96.88745
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating45.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length287 ft (87.5 m)
Longest span74 ft (22.7 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic485 (2022)
Projected traffic485 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 466th Avenue over Big Sioux Rv built?

It was built in 2021, making it 4 years old in 2025.

What condition is 466th Avenue over Big Sioux 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 466th Avenue over Big Sioux Rv carry?

About 485 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 466th Avenue over Big Sioux Rv?

The structure is 287 ft (87.5 m) long with a longest span of 74 ft (22.7 m) and a deck 32 ft wide.

Who owns 466th Avenue over Big Sioux Rv?

It is owned by the County Highway Agency.