US Bridges

45120 301 ST over Turkey Creek

Fair

Yankton County, South Dakota · 5.3 N & 0.2 E Volin · Structure no. 000000068232097

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

45120 301 ST over Turkey Creek is a prestressed concrete tee beam carrying 45120 301 ST over Turkey Creek in Yankton County, South Dakota. It was built in 1970, so it is 55 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 60 vehicles a day, roughly 2% of them trucks, projected to reach 60 by 2032. The structure is 51 ft (15.4 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries45120 301 ST
CrossesTurkey Creek
Location5.3 N & 0.2 E Volin
RouteCounty Highway 0
Coordinates43.02871, -97.17772
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length51 ft (15.4 m)
Longest span49 ft (14.9 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 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 45120 301 ST over Turkey Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is 45120 301 ST over Turkey 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 August 2024.

How much traffic does 45120 301 ST over Turkey Creek carry?

About 60 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 45120 301 ST over Turkey Creek?

The structure is 51 ft (15.4 m) long with a longest span of 49 ft (14.9 m) and a deck 31 ft wide.

Who owns 45120 301 ST over Turkey Creek?

It is owned by the County Highway Agency.