US Bridges

46380 308 ST over Vermillion Rv

PoorClosed to traffic

Clay County, South Dakota · 10.5S & 11.8E Irene · Structure no. 000000014118105

Built
1930
95 years old
Condition
Poor
inspected July 2021
Type
Truss - Thru
Steel
Length
101 ft
1 main span
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

46380 308 ST over Vermillion Rv is a steel truss - thru carrying 46380 308 ST over Vermillion Rv in Clay County, South Dakota. It was built in 1930, so it is 95 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: closed to all traffic.

It carries about 15 vehicles a day, roughly 2% of them trucks, projected to reach 59 by 2032. The structure is 101 ft (30.7 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries46380 308 ST
CrossesVermillion Rv
Location10.5S & 11.8E Irene
RouteCounty Highway 0
Coordinates42.93109, -96.92861
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2021
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry8: Equal to present desirable criteria
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating3 US tons
Inventory rating3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length101 ft (30.7 m)
Longest span73 ft (22.3 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic59 by 2032
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$705,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 46380 308 ST over Vermillion Rv built?

It was built in 1930, making it 95 years old in 2025.

What condition is 46380 308 ST over 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 July 2021.

How much traffic does 46380 308 ST over Vermillion Rv carry?

About 15 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 46380 308 ST over Vermillion Rv?

The structure is 101 ft (30.7 m) long with a longest span of 73 ft (22.3 m) and a deck 16 ft wide.

Who owns 46380 308 ST over Vermillion Rv?

It is owned by the County Highway Agency.