US Bridges

Sth 21-3rd ST over Yellow River Overflow

Good

Juneau County, Wisconsin · 0.5M E JCT Sth 80 · Structure no. B29010000000000

Built
1994
31 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
96 ft
2 main spans
Daily traffic
6,900
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 21-3rd ST over Yellow River Overflow is a concrete continuous slab carrying Sth 21-3rd ST over Yellow River Overflow in Juneau County, Wisconsin. It was built in 1994, so it is 31 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,900 vehicles a day, roughly 8% of them trucks, projected to reach 11,710 by 2042. The structure is 96 ft (29.4 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSth 21-3rd ST
CrossesYellow River Overflow
Location0.5M E JCT Sth 80
RouteState Highway 21
CountyJuneau County
StateWisconsin
Coordinates44.02739, -90.06406
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length96 ft (29.4 m)
Longest span47 ft (14.3 m)
Deck width52 ft (15.8 m)
Roadway width50 ft (15.2 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
CrossesWaterway
Detour if closed1.9 mi (3 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 Overflow built?

It was built in 1994, making it 31 years old in 2025.

What condition is Sth 21-3rd ST over Yellow River Overflow in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

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

The structure is 96 ft (29.4 m) long with a longest span of 47 ft (14.3 m) and a deck 52 ft wide.

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

It is owned by the State Highway Agency.