US Bridges

414th Ave over West Redstone Ck

FairPosted for load

Sanborn County, South Dakota · 0.5W 3.5N Artesian · Structure no. 000000056200095

Built
1920
105 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
56
2022 count
Owner
County
County Highway Agency

About this bridge

414th Ave over West Redstone Ck is a steel stringer/multi-beam or girder carrying 414th Ave over West Redstone Ck in Sanborn County, South Dakota. It was built in 1920, so it is 105 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 56 vehicles a day, roughly 2% of them trucks, projected to reach 56 by 2032. The structure is 31 ft (9.4 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
Carries414th Ave
CrossesWest Redstone Ck
Location0.5W 3.5N Artesian
RouteCounty Highway 0
CountySanborn County
StateSouth Dakota
Coordinates44.06074, -97.93136
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionAugust 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating27.6 US tons
Inventory rating16.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2022)
Projected traffic56 by 2032
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-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$167,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was 414th Ave over West Redstone Ck built?

It was built in 1920, making it 105 years old in 2025.

What condition is 414th Ave over West 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 August 2024.

How much traffic does 414th Ave over West Redstone Ck carry?

About 56 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 414th Ave over West Redstone Ck?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 16 ft wide.

Who owns 414th Ave over West Redstone Ck?

It is owned by the County Highway Agency.