US Bridges

Lrd S 84th ST over Root River

Fair

Milwaukee County, Wisconsin · 0.6M W JCT Cth U · Structure no. B40060400000000

Built
1991
34 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
66 ft
2 main spans
Daily traffic
2,300
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd S 84th ST over Root River is a concrete continuous slab carrying Lrd S 84th ST over Root River in Milwaukee County, Wisconsin. It was built in 1991, so it is 34 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 2,300 vehicles a day, projected to reach 2,760 by 2041. The structure is 66 ft (20.2 m) long and 50 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesLrd S 84th ST
CrossesRoot River
Location0.6M W JCT Cth U
RouteCity Street 0
CountyMilwaukee County
StateWisconsin
Coordinates42.94765, -88.01835
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating68.5 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length66 ft (20.2 m)
Longest span32 ft (9.8 m)
Deck width50 ft (15.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2021)
Projected traffic2,760 by 2041
Trucks0%
Lanes on structure2
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 84th ST over Root River built?

It was built in 1991, making it 34 years old in 2025.

What condition is Lrd S 84th ST over Root 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 84th ST over Root River carry?

About 2,300 vehicles per day (2021 count).

How long is Lrd S 84th ST over Root River?

The structure is 66 ft (20.2 m) long with a longest span of 32 ft (9.8 m) and a deck 50 ft wide.

Who owns Lrd S 84th ST over Root River?

It is owned by the City or Municipal Highway Agency.