US Bridges

194th Ave over Stockdam Spillway

Fair

Pennington County, South Dakota · 2E 2N Creighton · Structure no. 000000052940159

Built
1940
85 years old, rebuilt 2012
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
6
2022 count
Owner
County
County Highway Agency

About this bridge

194th Ave over Stockdam Spillway is a prestressed concrete tee beam carrying 194th Ave over Stockdam Spillway in Pennington County, South Dakota. It was built in 1940 and reconstructed in 2012, so it is 85 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 6 vehicles a day, roughly 9% of them trucks, projected to reach 6 by 2032. The structure is 25 ft (7.6 m) long and 15 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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Carries194th Ave
CrossesStockdam Spillway
Location2E 2N Creighton
RouteCounty Highway 0
CountyPennington County
StateSouth Dakota
Coordinates44.28389, -102.16785
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78 US tons
Inventory rating46.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span24 ft (7.4 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6 (2022)
Projected traffic6 by 2032
Trucks9%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 194th Ave over Stockdam Spillway built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2012.

What condition is 194th Ave over Stockdam Spillway 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 2024.

How much traffic does 194th Ave over Stockdam Spillway carry?

About 6 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is 194th Ave over Stockdam Spillway?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.4 m) and a deck 15 ft wide.

Who owns 194th Ave over Stockdam Spillway?

It is owned by the County Highway Agency.