US Bridges

44760 302nd Street over Unnamed Creek

FairPosted for load

Yankton County, South Dakota · 5S & 4.4W of Irene · Structure no. 000000068196110

Built
1940
85 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

44760 302nd Street over Unnamed Creek is a steel stringer/multi-beam or girder carrying 44760 302nd Street over Unnamed Creek in Yankton County, South Dakota. It was built in 1940, so it is 85 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 50 vehicles a day, roughly 2% of them trucks, projected to reach 50 by 2032. The structure is 25 ft (7.7 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries44760 302nd Street
CrossesUnnamed Creek
Location5S & 4.4W of Irene
Coordinates43.01048, -97.24906
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 protection8 Very GoodNo problems noted.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating14.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span20 ft (6.1 m)
Deck width23 ft (7 m)
Roadway width23 ft (6.9 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 closed1.9 mi (3 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$797,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 44760 302nd Street over Unnamed Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is 44760 302nd Street over Unnamed 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 44760 302nd Street over Unnamed Creek carry?

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

How long is 44760 302nd Street over Unnamed Creek?

The structure is 25 ft (7.7 m) long with a longest span of 20 ft (6.1 m) and a deck 23 ft wide.

Who owns 44760 302nd Street over Unnamed Creek?

It is owned by the County Highway Agency.