US Bridges

26760 426 Avenue over Plum Ck

Fair

Hanson County, South Dakota · 5E&10.6S Alexandria · Structure no. 000000031140236

Built
1962
63 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
25 ft
1 main span
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

26760 426 Avenue over Plum Ck is a concrete tee beam carrying 26760 426 Avenue over Plum Ck in Hanson County, South Dakota. It was built in 1962, so it is 63 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 35 vehicles a day, roughly 2% of them trucks, projected to reach 35 by 2032. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries26760 426 Avenue
CrossesPlum Ck
Location5E&10.6S Alexandria
RouteCounty Highway 0
Coordinates43.50591, -97.68657
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span24 ft (7.2 m)
Deck width22 ft (6.8 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2022)
Projected traffic35 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$16,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 26760 426 Avenue over Plum Ck built?

It was built in 1962, making it 63 years old in 2025.

What condition is 26760 426 Avenue over Plum Ck 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 July 2023.

How much traffic does 26760 426 Avenue over Plum Ck carry?

About 35 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 26760 426 Avenue over Plum Ck?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.2 m) and a deck 22 ft wide.

Who owns 26760 426 Avenue over Plum Ck?

It is owned by the County Highway Agency.