US Bridges

30720 451 Ave over Drainage Ditch

Good

Yankton County, South Dakota · 1.3 S Volin · Structure no. 000000068230162

Built
2016
9 years old
Condition
Good
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
655
2022 count
Owner
County
County Highway Agency

About this bridge

30720 451 Ave over Drainage Ditch is a prestressed concrete tee beam carrying 30720 451 Ave over Drainage Ditch in Yankton County, South Dakota. It was built in 2016, so it is 9 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 655 vehicles a day, roughly 3% of them trucks, projected to reach 655 by 2032. The structure is 45 ft (13.7 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries30720 451 Ave
CrossesDrainage Ditch
Location1.3 S Volin
RouteCounty Highway 0
Coordinates42.93489, -97.1805
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length45 ft (13.7 m)
Longest span41 ft (12.6 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic655 (2022)
Projected traffic655 by 2032
Trucks3%
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 30720 451 Ave over Drainage Ditch built?

It was built in 2016, making it 9 years old in 2025.

What condition is 30720 451 Ave over Drainage Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does 30720 451 Ave over Drainage Ditch carry?

About 655 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 30720 451 Ave over Drainage Ditch?

The structure is 45 ft (13.7 m) long with a longest span of 41 ft (12.6 m) and a deck 35 ft wide.

Who owns 30720 451 Ave over Drainage Ditch?

It is owned by the County Highway Agency.