US Bridges

IH 43 NB/94 WB over Sth 59 (national Ave)

Fair

Milwaukee County, Wisconsin · 5.1 MI N JCT IH 894 · Structure no. B400285025D0000

Built
1968
57 years old, rebuilt 1987
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
268 ft
4 main spans
Daily traffic
78,000
2022 count
Owner
State
State Highway Agency

About this bridge

IH 43 NB/94 WB over Sth 59 (national Ave) is a steel continuous stringer/multi-beam or girder carrying IH 43 NB/94 WB over Sth 59 (national Ave) in Milwaukee County, Wisconsin. It was built in 1968 and reconstructed in 1987, so it is 57 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 78,000 vehicles a day, roughly 9% of them trucks, projected to reach 158,400 by 2043. The structure is 268 ft (81.8 m) long and 56 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIH 43 NB/94 WB
CrossesSth 59 (national Ave)
Location5.1 MI N JCT IH 894
RouteInterstate 43
Coordinates43.02295, -87.92065
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating39.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length268 ft (81.8 m)
Longest span105 ft (32 m)
Deck width56 ft (17.2 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78,000 (2022)
Projected traffic158,400 by 2043
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 43 NB/94 WB over Sth 59 (national Ave) built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1987.

What condition is IH 43 NB/94 WB over Sth 59 (national Ave) 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 IH 43 NB/94 WB over Sth 59 (national Ave) carry?

About 78,000 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is IH 43 NB/94 WB over Sth 59 (national Ave)?

The structure is 268 ft (81.8 m) long with a longest span of 105 ft (32 m) and a deck 56 ft wide.

Who owns IH 43 NB/94 WB over Sth 59 (national Ave)?

It is owned by the State Highway Agency.