US Bridges

26920 408 Ave over South Fork Twelve Mile C

Good

Hutchinson County, South Dakota · 2.0 W & 0.8 N Dimock · Structure no. 000000034040012

Built
2004
21 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
55
2022 count
Owner
County
County Highway Agency

About this bridge

26920 408 Ave over South Fork Twelve Mile C is a concrete continuous culvert carrying 26920 408 Ave over South Fork Twelve Mile C in Hutchinson County, South Dakota. It was built in 2004, so it is 21 years old, younger than the South Dakota average of 48.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 55 vehicles a day, roughly 9% of them trucks, projected to reach 85 by 2032. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Carries26920 408 Ave
CrossesSouth Fork Twelve Mile C
Location2.0 W & 0.8 N Dimock
RouteCounty Highway 0
Coordinates43.48233, -98.03689
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length29 ft (8.7 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2022)
Projected traffic85 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 26920 408 Ave over South Fork Twelve Mile C built?

It was built in 2004, making it 21 years old in 2025.

What condition is 26920 408 Ave over South Fork Twelve Mile C in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does 26920 408 Ave over South Fork Twelve Mile C carry?

About 55 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is 26920 408 Ave over South Fork Twelve Mile C?

The structure is 29 ft (8.7 m) long with a longest span of 14 ft (4.3 m).

Who owns 26920 408 Ave over South Fork Twelve Mile C?

It is owned by the County Highway Agency.