US Bridges

Lrd S 1st ST over Kinnickinnic River

Fair

Milwaukee County, Wisconsin · 0.6M S JCT Sth 32 · Structure no. P40082900000000

Built
1953
72 years old, rebuilt 2015
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
166 ft
4 main spans
Daily traffic
6,113
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd S 1st ST over Kinnickinnic River is a steel continuous stringer/multi-beam or girder carrying Lrd S 1st ST over Kinnickinnic River in Milwaukee County, Wisconsin. It was built in 1953 and reconstructed in 2015, so it is 72 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 6,113 vehicles a day, projected to reach 7,008 by 2043. The structure is 166 ft (50.6 m) long and 72 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesLrd S 1st ST
CrossesKinnickinnic River
Location0.6M S JCT Sth 32
RouteCity Street 0
CountyMilwaukee County
StateWisconsin
Coordinates43.00192, -87.91129
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating104.4 US tons
Inventory rating62.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length166 ft (50.6 m)
Longest span44 ft (13.4 m)
Deck width72 ft (21.8 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,113 (2022)
Projected traffic7,008 by 2043
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Lrd S 1st ST over Kinnickinnic River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2015.

What condition is Lrd S 1st ST over Kinnickinnic 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 October 2024.

How much traffic does Lrd S 1st ST over Kinnickinnic River carry?

About 6,113 vehicles per day (2022 count).

How long is Lrd S 1st ST over Kinnickinnic River?

The structure is 166 ft (50.6 m) long with a longest span of 44 ft (13.4 m) and a deck 72 ft wide.

Who owns Lrd S 1st ST over Kinnickinnic River?

It is owned by the City or Municipal Highway Agency.