US Bridges

Sth 73 over Wisconsin River 19

Fair

Wood County, Wisconsin · 4.0M N JCT Sth 13 (a) · Structure no. B71001800000000

Built
1962
63 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
918 ft
7 main spans
Daily traffic
7,700
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 73 over Wisconsin River 19 is a steel continuous stringer/multi-beam or girder carrying Sth 73 over Wisconsin River 19 in Wood County, Wisconsin. It was built in 1962, so it is 63 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 7,700 vehicles a day, roughly 3% of them trucks, projected to reach 9,000 by 2042. The structure is 918 ft (279.8 m) long and 45 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesSth 73
CrossesWisconsin River 19
Location4.0M N JCT Sth 13 (a)
RouteState Highway 73
Coordinates44.3132, -89.88747
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionJune 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 rating54 US tons
Inventory rating32.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length918 ft (279.8 m)
Longest span152 ft (46.3 m)
Deck width45 ft (13.6 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,700 (2021)
Projected traffic9,000 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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 73 over Wisconsin River 19 built?

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

What condition is Sth 73 over Wisconsin River 19 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 June 2023.

How much traffic does Sth 73 over Wisconsin River 19 carry?

About 7,700 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Sth 73 over Wisconsin River 19?

The structure is 918 ft (279.8 m) long with a longest span of 152 ft (46.3 m) and a deck 45 ft wide.

Who owns Sth 73 over Wisconsin River 19?

It is owned by the State Highway Agency.