US Bridges

S Broadway Wtn over Big Sioux Rv

Fair

Codington County, South Dakota · S. Broadway - Watertown · Structure no. 000000015184181

Built
1962
63 years old, rebuilt 2016
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
94 ft
3 main spans
Daily traffic
169
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Broadway Wtn over Big Sioux Rv is a prestressed concrete tee beam carrying S Broadway Wtn over Big Sioux Rv in Codington County, South Dakota. It was built in 1962 and reconstructed in 2016, 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 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 169 vehicles a day, roughly 5% of them trucks, projected to reach 169 by 2032. The structure is 94 ft (28.7 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS Broadway Wtn
CrossesBig Sioux Rv
LocationS. Broadway - Watertown
RouteCity Street 0
Coordinates44.88926, -97.11899
Functional classUrban 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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating66.6 US tons
Inventory rating51.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length94 ft (28.7 m)
Longest span89 ft (27 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic169 (2022)
Projected traffic169 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 S Broadway Wtn over Big Sioux Rv built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2016.

What condition is S Broadway Wtn over Big Sioux Rv 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 S Broadway Wtn over Big Sioux Rv carry?

About 169 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is S Broadway Wtn over Big Sioux Rv?

The structure is 94 ft (28.7 m) long with a longest span of 89 ft (27 m) and a deck 29 ft wide.

Who owns S Broadway Wtn over Big Sioux Rv?

It is owned by the City or Municipal Highway Agency.