US Bridges

473rd Avenue over Trib to Big Sioux Rv

Fair

Minnehaha County, South Dakota · 0.9N & 1W Baltic · Structure no. 000000050190051

Built
1976
49 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
65
2022 count
Owner
County
County Highway Agency

About this bridge

473rd Avenue over Trib to Big Sioux Rv is a prestressed concrete tee beam carrying 473rd Avenue over Trib to Big Sioux Rv in Minnehaha County, South Dakota. It was built in 1976, so it is 49 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 65 vehicles a day, roughly 2% of them trucks, projected to reach 75 by 2037. The structure is 52 ft (15.8 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries473rd Avenue
CrossesTrib to Big Sioux Rv
Location0.9N & 1W Baltic
RouteCounty Highway 0
CountyMinnehaha County
StateSouth Dakota
Coordinates43.77597, -96.75107
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating21.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span50 ft (15.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2022)
Projected traffic75 by 2037
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$535,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 473rd Avenue over Trib to Big Sioux Rv built?

It was built in 1976, making it 49 years old in 2025.

What condition is 473rd Avenue over Trib to 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 July 2023.

How much traffic does 473rd Avenue over Trib to Big Sioux Rv carry?

About 65 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is 473rd Avenue over Trib to Big Sioux Rv?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.1 m) and a deck 24 ft wide.

Who owns 473rd Avenue over Trib to Big Sioux Rv?

It is owned by the County Highway Agency.