US Bridges

407th Ave over Creek

Fair

Spink County, South Dakota · 1E & 0.4N Turton · Structure no. 000000058310126

Built
1955
70 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
43 ft
2 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

407th Ave over Creek is a steel stringer/multi-beam or girder carrying 407th Ave over Creek in Spink County, South Dakota. It was built in 1955, so it is 70 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.

It carries about 50 vehicles a day, roughly 2% of them trucks, projected to reach 50 by 2032. The structure is 43 ft (13.1 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
Carries407th Ave
CrossesCreek
Location1E & 0.4N Turton
RouteCounty Highway 0
CountySpink County
StateSouth Dakota
Coordinates45.05912, -98.08473
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.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.9 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span21 ft (6.4 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic50 by 2032
Trucks2%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 407th Ave over Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is 407th Ave over Creek 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 June 2023.

How much traffic does 407th Ave over Creek carry?

About 50 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 407th Ave over Creek?

The structure is 43 ft (13.1 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.

Who owns 407th Ave over Creek?

It is owned by the County Highway Agency.