US Bridges

IH Ramp IH43 Nb/Us over IH 43 SB

Fair

Milwaukee County, Wisconsin · 0.8M N JCT Sth 100 to N · Structure no. B40018900000000

Built
1966
59 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
115 ft
3 main spans
Daily traffic
20,900
2021 count
Owner
State
State Highway Agency

About this bridge

IH Ramp IH43 Nb/Us over IH 43 SB is a concrete continuous slab carrying IH Ramp IH43 Nb/Us over IH 43 SB in Milwaukee County, Wisconsin. It was built in 1966, so it is 59 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 20,900 vehicles a day, roughly 3% of them trucks, projected to reach 25,080 by 2041. The structure is 115 ft (34.9 m) long and 39 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesIH Ramp IH43 Nb/Us
CrossesIH 43 SB
Location0.8M N JCT Sth 100 to N
RouteInterstate 41
CountyMilwaukee County
StateWisconsin
Coordinates42.96324, -88.03756
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (34.9 m)
Longest span43 ft (13 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic20,900 (2021)
Projected traffic25,080 by 2041
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH Ramp IH43 Nb/Us over IH 43 SB built?

It was built in 1966, making it 59 years old in 2025.

What condition is IH Ramp IH43 Nb/Us over IH 43 SB 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 IH Ramp IH43 Nb/Us over IH 43 SB carry?

About 20,900 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is IH Ramp IH43 Nb/Us over IH 43 SB?

The structure is 115 ft (34.9 m) long with a longest span of 43 ft (13 m) and a deck 39 ft wide.

Who owns IH Ramp IH43 Nb/Us over IH 43 SB?

It is owned by the State Highway Agency.