US Bridges

450th Avenue over Trib. to E Fork Verm Rv

Fair

McCook County, South Dakota · 5.5S & 4E of Canistota · Structure no. 000000044200225

Built
1940
85 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

450th Avenue over Trib. to E Fork Verm Rv is a concrete continuous culvert carrying 450th Avenue over Trib. to E Fork Verm Rv in McCook 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 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 30 vehicles a day, roughly 2% of them trucks, projected to reach 30 by 2032. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries450th Avenue
CrossesTrib. to E Fork Verm Rv
Location5.5S & 4E of Canistota
CountyMcCook County
StateSouth Dakota
Coordinates43.52299, -97.20954
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
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 inspectionJuly 2024
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 alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2032
Trucks2%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 450th Avenue over Trib. to E Fork Verm Rv built?

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

What condition is 450th Avenue over Trib. to E Fork Verm 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 July 2024.

How much traffic does 450th Avenue over Trib. to E Fork Verm Rv carry?

About 30 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 450th Avenue over Trib. to E Fork Verm Rv?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns 450th Avenue over Trib. to E Fork Verm Rv?

It is owned by the County Highway Agency.