US Bridges

Sth 21-3rd ST over Yellow River

Fair

Juneau County, Wisconsin · 0.1M E JCT Sth 80 · Structure no. B29000600000000

Built
1950
75 years old, rebuilt 1999
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
245 ft
3 main spans
Daily traffic
6,900
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 21-3rd ST over Yellow River is a steel continuous stringer/multi-beam or girder carrying Sth 21-3rd ST over Yellow River in Juneau County, Wisconsin. It was built in 1950 and reconstructed in 1999, so it is 75 years old, older than the Wisconsin average of 40.3 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 6,900 vehicles a day, roughly 8% of them trucks, projected to reach 11,710 by 2042. The structure is 245 ft (74.7 m) long and 35 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesSth 21-3rd ST
CrossesYellow River
Location0.1M E JCT Sth 80
RouteState Highway 21
CountyJuneau County
StateWisconsin
Coordinates44.0268, -90.0725
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length245 ft (74.7 m)
Longest span92 ft (28 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2022)
Projected traffic11,710 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Sth 21-3rd ST over Yellow River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1999.

What condition is Sth 21-3rd ST over Yellow 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 May 2023.

How much traffic does Sth 21-3rd ST over Yellow River carry?

About 6,900 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 21-3rd ST over Yellow River?

The structure is 245 ft (74.7 m) long with a longest span of 92 ft (28 m) and a deck 35 ft wide.

Who owns Sth 21-3rd ST over Yellow River?

It is owned by the State Highway Agency.