US Bridges

45520 275 ST over West Fork Vermillion Rv

PoorPosted for load

Turner County, South Dakota · 2.2E Parker · Structure no. 000000063152070

Built
1952
73 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
229 ft
4 main spans
Daily traffic
758
2022 count
Owner
County
County Highway Agency

About this bridge

45520 275 ST over West Fork Vermillion Rv is a steel stringer/multi-beam or girder carrying 45520 275 ST over West Fork Vermillion Rv in Turner County, South Dakota. It was built in 1952, so it is 73 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 758 vehicles a day, roughly 3% of them trucks, projected to reach 758 by 2032. The structure is 229 ft (69.8 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries45520 275 ST
CrossesWest Fork Vermillion Rv
Location2.2E Parker
RouteCounty Highway 0
Coordinates43.40193, -97.09935
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating19.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length229 ft (69.8 m)
Longest span64 ft (19.5 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic758 (2022)
Projected traffic758 by 2032
Trucks3%
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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 45520 275 ST over West Fork Vermillion Rv built?

It was built in 1952, making it 73 years old in 2025.

What condition is 45520 275 ST over West Fork Vermillion Rv in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does 45520 275 ST over West Fork Vermillion Rv carry?

About 758 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 45520 275 ST over West Fork Vermillion Rv?

The structure is 229 ft (69.8 m) long with a longest span of 64 ft (19.5 m) and a deck 26 ft wide.

Who owns 45520 275 ST over West Fork Vermillion Rv?

It is owned by the County Highway Agency.