US Bridges

382nd Avenue over Elm River

Fair

Brown County, South Dakota · 4W & 4S of Fredrick · Structure no. 000000007060112

Built
1991
34 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
77
2022 count
Owner
County
County Highway Agency

About this bridge

382nd Avenue over Elm River is a concrete continuous slab carrying 382nd Avenue over Elm River in Brown County, South Dakota. It was built in 1991, so it is 34 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 77 vehicles a day, roughly 3% of them trucks, projected to reach 77 by 2032. The structure is 105 ft (32 m) long and 32 ft wide.

Carries382nd Avenue
CrossesElm River
Location4W & 4S of Fredrick
RouteCounty Highway 6439
Coordinates45.77654, -98.60092
Functional classRural Major Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating47.1 US tons
Inventory rating36.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length105 ft (32 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2022)
Projected traffic77 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 382nd Avenue over Elm River built?

It was built in 1991, making it 34 years old in 2025.

What condition is 382nd Avenue over Elm River 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 September 2023.

How much traffic does 382nd Avenue over Elm River carry?

About 77 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is 382nd Avenue over Elm River?

The structure is 105 ft (32 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns 382nd Avenue over Elm River?

It is owned by the County Highway Agency.