US Bridges

IH 43 Nb/Ush 45 NB over Cth Y (w Layton Ave)

Fair

Milwaukee County, Wisconsin · 0.4M N JCT Sth 100 to N · Structure no. B40030400000000

Built
1966
59 years old, rebuilt 1993
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,573 ft
20 main spans
Daily traffic
38,250
2021 count
Owner
State
State Highway Agency

About this bridge

IH 43 Nb/Ush 45 NB over Cth Y (w Layton Ave) is a steel continuous stringer/multi-beam or girder carrying IH 43 Nb/Ush 45 NB over Cth Y (w Layton Ave) in Milwaukee County, Wisconsin. It was built in 1966 and reconstructed in 1993, 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 38,250 vehicles a day, roughly 11% of them trucks, projected to reach 88,050 by 2043. The structure is 1,573 ft (479.4 m) long and 56 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIH 43 Nb/Ush 45 NB
CrossesCth Y (w Layton Ave)
Location0.4M N JCT Sth 100 to N
RouteInterstate 43
Coordinates42.95792, -88.04292
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.2 US tons
Inventory rating30.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans20
Design loadHS 20
Structure length1,573 ft (479.4 m)
Longest span85 ft (25.9 m)
Deck width56 ft (17 m)
Roadway width53 ft (16.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,250 (2021)
Projected traffic88,050 by 2043
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 43 Nb/Ush 45 NB over Cth Y (w Layton Ave) built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1993.

What condition is IH 43 Nb/Ush 45 NB over Cth Y (w Layton 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 May 2024.

How much traffic does IH 43 Nb/Ush 45 NB over Cth Y (w Layton Ave) carry?

About 38,250 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is IH 43 Nb/Ush 45 NB over Cth Y (w Layton Ave)?

The structure is 1,573 ft (479.4 m) long with a longest span of 85 ft (25.9 m) and a deck 56 ft wide.

Who owns IH 43 Nb/Ush 45 NB over Cth Y (w Layton Ave)?

It is owned by the State Highway Agency.