US Bridges

Lrd S 20th ST over Kinnickinnic River

Fair

Milwaukee County, Wisconsin · 2.1M S JCT Sth 59 · Structure no. P40084200000000

Built
1938
87 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
7,804
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd S 20th ST over Kinnickinnic River is a concrete continuous culvert carrying Lrd S 20th ST over Kinnickinnic River in Milwaukee County, Wisconsin. It was built in 1938, so it is 87 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.

It carries about 7,804 vehicles a day, projected to reach 9,267 by 2043. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesLrd S 20th ST
CrossesKinnickinnic River
Location2.1M S JCT Sth 59
RouteCity Street 0
CountyMilwaukee County
StateWisconsin
Coordinates42.99153, -87.93844
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length39 ft (11.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,804 (2022)
Projected traffic9,267 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 20th ST over Kinnickinnic River built?

It was built in 1938, making it 87 years old in 2025.

What condition is Lrd S 20th 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 June 2024.

How much traffic does Lrd S 20th ST over Kinnickinnic River carry?

About 7,804 vehicles per day (2022 count).

How long is Lrd S 20th ST over Kinnickinnic River?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Lrd S 20th ST over Kinnickinnic River?

It is owned by the City or Municipal Highway Agency.