US Bridges

Sth 80-STH 173 over Yellow River

Fair

Wood County, Wisconsin · 0.4M N JCT Sth 173 to S · Structure no. B71009800000000

Built
1996
29 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
401 ft
4 main spans
Daily traffic
2,800
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 80-STH 173 over Yellow River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 80-STH 173 over Yellow River in Wood County, Wisconsin. It was built in 1996, so it is 29 years old, younger 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 2,800 vehicles a day, roughly 11% of them trucks, projected to reach 3,360 by 2041. The structure is 401 ft (122.2 m) long and 39 ft wide. If it were closed, the detour would be 58.4 mi (94 km).

CarriesSth 80-STH 173
CrossesYellow River
Location0.4M N JCT Sth 173 to S
RouteState Highway 80
Coordinates44.30041, -90.12164
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.4 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length401 ft (122.2 m)
Longest span99 ft (30.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2021)
Projected traffic3,360 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed58.4 mi (94 km)
TollOn a free road
National Highway SystemYes

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 80-STH 173 over Yellow River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Sth 80-STH 173 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 September 2023.

How much traffic does Sth 80-STH 173 over Yellow River carry?

About 2,800 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Sth 80-STH 173 over Yellow River?

The structure is 401 ft (122.2 m) long with a longest span of 99 ft (30.3 m) and a deck 39 ft wide.

Who owns Sth 80-STH 173 over Yellow River?

It is owned by the State Highway Agency.