US Bridges

48080 308 Str. over East Union Ck

Fair

Union County, South Dakota · 6.5S & 1.8E Alcester · Structure no. 000000064108110

Built
1996
29 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
35
2022 count
Owner
County
County Highway Agency

About this bridge

48080 308 Str. over East Union Ck is a steel stringer/multi-beam or girder carrying 48080 308 Str. over East Union Ck in Union County, South Dakota. It was built in 1996, so it is 29 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 6 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 32 ft (9.8 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries48080 308 Str.
CrossesEast Union Ck
Location6.5S & 1.8E Alcester
RouteCounty Highway 0
Coordinates42.92343, -96.59264
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
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 rating110.1 US tons
Inventory rating72.1 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span31 ft (9.3 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.5 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$25,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 48080 308 Str. over East Union Ck built?

It was built in 1996, making it 29 years old in 2025.

What condition is 48080 308 Str. over East Union 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 August 2024.

How much traffic does 48080 308 Str. over East Union Ck carry?

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

How long is 48080 308 Str. over East Union Ck?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.3 m) and a deck 22 ft wide.

Who owns 48080 308 Str. over East Union Ck?

It is owned by the County Highway Agency.