US Bridges

31160 Univer. Road over Vermillion Rv

Fair

Clay County, South Dakota · 1.2E & 6N Vermillion · Structure no. 000000014130146

Built
1973
52 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
225 ft
3 main spans
Daily traffic
297
2022 count
Owner
County
County Highway Agency

About this bridge

31160 Univer. Road over Vermillion Rv is a prestressed concrete continuous box beam or girders - single or spread carrying 31160 Univer. Road over Vermillion Rv in Clay County, South Dakota. It was built in 1973, so it is 52 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 297 vehicles a day, roughly 3% of them trucks, projected to reach 297 by 2032. The structure is 225 ft (68.6 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries31160 Univer. Road
CrossesVermillion Rv
Location1.2E & 6N Vermillion
RouteCounty Highway 0
CountyClay County
StateSouth Dakota
Coordinates42.87308, -96.90438
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating95 US tons
Inventory rating56.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span90 ft (27.4 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic297 (2022)
Projected traffic297 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 31160 Univer. Road over Vermillion Rv built?

It was built in 1973, making it 52 years old in 2025.

What condition is 31160 Univer. Road over 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 September 2024.

How much traffic does 31160 Univer. Road over Vermillion Rv carry?

About 297 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 31160 Univer. Road over Vermillion Rv?

The structure is 225 ft (68.6 m) long with a longest span of 90 ft (27.4 m) and a deck 32 ft wide.

Who owns 31160 Univer. Road over Vermillion Rv?

It is owned by the County Highway Agency.