US Bridges

30280 431st Avenue over Beaver Creek

Fair

Yankton County, South Dakota · 2.8S & 1E of Lesterville · Structure no. 000000068030118

Built
1993
32 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

30280 431st Avenue over Beaver Creek is a prestressed concrete tee beam carrying 30280 431st Avenue over Beaver Creek in Yankton County, South Dakota. It was built in 1993, so it is 32 years old, younger 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 45 vehicles a day, roughly 2% of them trucks, projected to reach 45 by 2032. The structure is 43 ft (13 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries30280 431st Avenue
CrossesBeaver Creek
Location2.8S & 1E of Lesterville
Coordinates42.99826, -97.57631
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length43 ft (13 m)
Longest span41 ft (12.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 30280 431st Avenue over Beaver Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is 30280 431st Avenue over Beaver 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 30280 431st Avenue over Beaver Creek carry?

About 45 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 30280 431st Avenue over Beaver Creek?

The structure is 43 ft (13 m) long with a longest span of 41 ft (12.4 m) and a deck 24 ft wide.

Who owns 30280 431st Avenue over Beaver Creek?

It is owned by the County Highway Agency.