US Bridges

US081 over East Fork Vermillion Rv

Fair

Lake County, South Dakota · 2.2 E Miner CO Line · Structure no. 000000040022130

Built
1983
42 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
1,811
2024 count
Owner
State
State Highway Agency

About this bridge

US081 over East Fork Vermillion Rv is a concrete continuous culvert carrying US081 over East Fork Vermillion Rv in Lake County, South Dakota. It was built in 1983, so it is 42 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,811 vehicles a day, roughly 16% of them trucks, projected to reach 2,950 by 2044. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 54.1 mi (87 km).

CarriesUS081
CrossesEast Fork Vermillion Rv
Location2.2 E Miner CO Line
RouteU.S. Route 81
Coordinates44.00803, -97.32586
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating108.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length25 ft (7.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,811 (2024)
Projected traffic2,950 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed54.1 mi (87 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US081 over East Fork Vermillion Rv built?

It was built in 1983, making it 42 years old in 2025.

What condition is US081 over East Fork Vermillion Rv in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does US081 over East Fork Vermillion Rv carry?

About 1,811 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is US081 over East Fork Vermillion Rv?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).

Who owns US081 over East Fork Vermillion Rv?

It is owned by the State Highway Agency.