US Bridges

Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR

FairPosted for load

Monroe County, Wisconsin · 0.5M E JCT Sth 21 (e) · Structure no. B41038900000000

Built
1939
86 years old, rebuilt 1990
Condition
Fair
inspected September 2024
Type
Truss - Deck
Steel
Length
1,080 ft
6 main spans
Daily traffic
6,400
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR is a steel truss - deck carrying Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR in Monroe County, Wisconsin. It was built in 1939 and reconstructed in 1990, so it is 86 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 6,400 vehicles a day, roughly 5% of them trucks, projected to reach 9,600 by 2042. The structure is 1,080 ft (329.2 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesSth 16/71-WISC Ave
CrossesLrd Milwaukee Ave/Cp RR
Location0.5M E JCT Sth 21 (e)
RouteState Highway 16
CountyMonroe County
StateWisconsin
Coordinates43.94036, -90.7952
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeTruss - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans6 (+5 approach)
Design loadH 15
Structure length1,080 ft (329.2 m)
Longest span118 ft (36 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2021)
Projected traffic9,600 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1990.

What condition is Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR 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 2024.

How much traffic does Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR carry?

About 6,400 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR?

The structure is 1,080 ft (329.2 m) long with a longest span of 118 ft (36 m) and a deck 33 ft wide.

Who owns Sth 16/71-WISC Ave over Lrd Milwaukee Ave/Cp RR?

It is owned by the State Highway Agency.