US Bridges

SD025 over West Fork Vermillion Rv

Fair

Miner County, South Dakota · 3.9 S Kingsbury CO Line · Structure no. 000000049150040

Built
1953
72 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
762
2024 count
Owner
State
State Highway Agency

About this bridge

SD025 over West Fork Vermillion Rv is a concrete continuous culvert carrying SD025 over West Fork Vermillion Rv in Miner County, South Dakota. It was built in 1953, so it is 72 years old, older 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 5 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 762 vehicles a day, roughly 23% of them trucks, projected to reach 1,241 by 2044. The structure is 32 ft (9.7 m) long. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesSD025
CrossesWest Fork Vermillion Rv
Location3.9 S Kingsbury CO Line
RouteState Highway 25
CountyMiner County
StateSouth Dakota
Coordinates44.13883, -97.55107
Functional classRural Minor Arterial

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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating94 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length32 ft (9.7 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic762 (2024)
Projected traffic1,241 by 2044
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$12,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SD025 over West Fork Vermillion Rv built?

It was built in 1953, making it 72 years old in 2025.

What condition is SD025 over West 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 SD025 over West Fork Vermillion Rv carry?

About 762 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is SD025 over West Fork Vermillion Rv?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3.1 m).

Who owns SD025 over West Fork Vermillion Rv?

It is owned by the State Highway Agency.