US Bridges

411th Ave. over Redstone Ck

Good

Sanborn County, South Dakota · 3.5W 4.4N Artesian · Structure no. 000000056170086

Built
1998
27 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
105 ft
1 main span
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

411th Ave. over Redstone Ck is a prestressed concrete continuous stringer/multi-beam or girder carrying 411th Ave. over Redstone Ck in Sanborn County, South Dakota. It was built in 1998, so it is 27 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 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 105 ft (32 m) long and 47 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Carries411th Ave.
CrossesRedstone Ck
Location3.5W 4.4N Artesian
RouteCounty Highway 0
Coordinates44.07441, -97.99168
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating80.5 US tons
Inventory rating32.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length105 ft (32 m)
Longest span103 ft (31.4 m)
Deck width47 ft (14.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2022)
Projected traffic35 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 411th Ave. over Redstone Ck built?

It was built in 1998, making it 27 years old in 2025.

What condition is 411th Ave. over Redstone 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 August 2024.

How much traffic does 411th Ave. over Redstone Ck carry?

About 35 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 411th Ave. over Redstone Ck?

The structure is 105 ft (32 m) long with a longest span of 103 ft (31.4 m) and a deck 47 ft wide.

Who owns 411th Ave. over Redstone Ck?

It is owned by the County Highway Agency.