US Bridges

237 ST over East Fork Vermillion Rv

Fair

Lake County, South Dakota · 4.7S & 3.6E Winfred · Structure no. 000000040039180

Built
1940
85 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
91
2022 count
Owner
County
County Highway Agency

About this bridge

237 ST over East Fork Vermillion Rv is a steel stringer/multi-beam or girder carrying 237 ST over East Fork Vermillion Rv in Lake County, South Dakota. It was built in 1940, so it is 85 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 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 91 vehicles a day, roughly 2% of them trucks, projected to reach 91 by 2032. The structure is 52 ft (15.8 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries237 ST
CrossesEast Fork Vermillion Rv
Location4.7S & 3.6E Winfred
RouteCounty Highway 0
Coordinates43.93525, -97.29091
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating25.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span49 ft (14.9 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91 (2022)
Projected traffic91 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 237 ST over East Fork Vermillion Rv built?

It was built in 1940, making it 85 years old in 2025.

What condition is 237 ST 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 August 2023.

How much traffic does 237 ST over East Fork Vermillion Rv carry?

About 91 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 237 ST over East Fork Vermillion Rv?

The structure is 52 ft (15.8 m) long with a longest span of 49 ft (14.9 m) and a deck 27 ft wide.

Who owns 237 ST over East Fork Vermillion Rv?

It is owned by the County Highway Agency.