US Bridges

466th Avenue over Creek

Good

Roberts County, South Dakota · 1W & 0.1S of Wilmot · Structure no. 000000055170361

Built
1985
40 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
38
2022 count
Owner
County
County Highway Agency

About this bridge

466th Avenue over Creek is a concrete continuous culvert carrying 466th Avenue over Creek in Roberts County, South Dakota. It was built in 1985, so it is 40 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 38 vehicles a day, roughly 2% of them trucks, projected to reach 38 by 2032. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Carries466th Avenue
CrossesCreek
Location1W & 0.1S of Wilmot
Coordinates45.41088, -96.88242
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38 (2022)
Projected traffic38 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 466th Avenue over Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is 466th Avenue over Creek 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 2024.

How much traffic does 466th Avenue over Creek carry?

About 38 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 466th Avenue over Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns 466th Avenue over Creek?

It is owned by the County Highway Agency.