IH 43 SB over Sth 57 NB
FairOzaukee County, Wisconsin · 3.3M S JCT Sth 32 · Structure no. B45003700000000
- Built
- 1974
- 51 years old, rebuilt 2012
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 375 ft
- 3 main spans
- Daily traffic
- 15,400
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
IH 43 SB over Sth 57 NB is a steel continuous stringer/multi-beam or girder carrying IH 43 SB over Sth 57 NB in Ozaukee County, Wisconsin. It was built in 1974 and reconstructed in 2012, so it is 51 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 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 15,400 vehicles a day, roughly 14% of them trucks, projected to reach 23,870 by 2043. The structure is 375 ft (114.2 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IH 43 SB over Sth 57 NB built?
It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2012.
What condition is IH 43 SB over Sth 57 NB 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 August 2024.
How much traffic does IH 43 SB over Sth 57 NB carry?
About 15,400 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is IH 43 SB over Sth 57 NB?
The structure is 375 ft (114.2 m) long with a longest span of 151 ft (45.9 m) and a deck 44 ft wide.
Who owns IH 43 SB over Sth 57 NB?
It is owned by the State Highway Agency.