US Bridges

190th Street over Big Sioux River

Fair

Hamlin County, South Dakota · 7S & 2E of Castlewood · Structure no. 000000029250120

Built
1980
45 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
99 ft
3 main spans
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

190th Street over Big Sioux River is a concrete continuous slab carrying 190th Street over Big Sioux River in Hamlin County, South Dakota. It was built in 1980, so it is 45 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 75 vehicles a day, roughly 2% of them trucks, projected to reach 75 by 2032. The structure is 99 ft (30.3 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries190th Street
CrossesBig Sioux River
Location7S & 2E of Castlewood
Coordinates44.63042, -96.98633
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length99 ft (30.3 m)
Longest span37 ft (11.4 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic75 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 190th Street over Big Sioux River built?

It was built in 1980, making it 45 years old in 2025.

What condition is 190th Street over Big Sioux 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 July 2024.

How much traffic does 190th Street over Big Sioux River carry?

About 75 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 190th Street over Big Sioux River?

The structure is 99 ft (30.3 m) long with a longest span of 37 ft (11.4 m) and a deck 33 ft wide.

Who owns 190th Street over Big Sioux River?

It is owned by the County Highway Agency.