US Bridges

SD046 over Blind Ck

Good

Clay County, South Dakota · 0.7E JCT Sd 19 S · Structure no. 000000014107000

Built
2020
5 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
3,303
2023 count
Owner
State
State Highway Agency

About this bridge

SD046 over Blind Ck is a concrete continuous culvert carrying SD046 over Blind Ck in Clay County, South Dakota. It was built in 2020, so it is 5 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,303 vehicles a day, roughly 9% of them trucks, projected to reach 4,284 by 2043. The structure is 37 ft (11.4 m) long and 40 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

CarriesSD046
CrossesBlind Ck
Location0.7E JCT Sd 19 S
RouteState Highway 46
Coordinates43.08369, -96.84716
Functional classRural Minor Arterial

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.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating109.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length37 ft (11.4 m)
Longest span12 ft (3.7 m)
Deck width40 ft (12.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,303 (2023)
Projected traffic4,284 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SD046 over Blind Ck built?

It was built in 2020, making it 5 years old in 2025.

What condition is SD046 over Blind Ck 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 October 2024.

How much traffic does SD046 over Blind Ck carry?

About 3,303 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SD046 over Blind Ck?

The structure is 37 ft (11.4 m) long with a longest span of 12 ft (3.7 m) and a deck 40 ft wide.

Who owns SD046 over Blind Ck?

It is owned by the State Highway Agency.