US Bridges

413th Ave. over Redstone Ck

FairPosted for load

Sanborn County, South Dakota · 1 W 2.4 N Artesian · Structure no. 000000056190106

Built
1930
95 years old, rebuilt 1967
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
2 main spans
Daily traffic
175
2022 count
Owner
County
County Highway Agency

About this bridge

413th Ave. over Redstone Ck is a steel stringer/multi-beam or girder carrying 413th Ave. over Redstone Ck in Sanborn County, South Dakota. It was built in 1930 and reconstructed in 1967, 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 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. Its operating status is: posted for load restriction.

It carries about 175 vehicles a day, roughly 3% of them trucks, projected to reach 175 by 2032. The structure is 40 ft (12.2 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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Carries413th Ave.
CrossesRedstone Ck
Location1 W 2.4 N Artesian
RouteCounty Highway 0
CountySanborn County
StateSouth Dakota
Coordinates44.04508, -97.95147
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating15.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length40 ft (12.2 m)
Longest span19 ft (5.8 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2022)
Projected traffic175 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$184,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 413th Ave. over Redstone Ck built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1967.

What condition is 413th Ave. over Redstone Ck 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 2023.

How much traffic does 413th Ave. over Redstone Ck carry?

About 175 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 413th Ave. over Redstone Ck?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns 413th Ave. over Redstone Ck?

It is owned by the County Highway Agency.