I-75 SB over M-59
FairOakland County, Michigan · East of Pontiac (M-59) · Structure no. 000000000008000
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 231 ft
- 4 main spans
- Daily traffic
- 63,925
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
I-75 SB over M-59 is a steel stringer/multi-beam or girder carrying I-75 SB over M-59 in Oakland County, Michigan. It was built in 1963, so it is 62 years old, older than the Michigan average of 48.3 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 63,925 vehicles a day, roughly 6% of them trucks, projected to reach 67,875 by 2039. The structure is 231 ft (70.3 m) long and 75 ft wide.
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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-75 SB over M-59 built?
It was built in 1963, making it 62 years old in 2025.
What condition is I-75 SB over M-59 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 July 2023.
How much traffic does I-75 SB over M-59 carry?
About 63,925 vehicles per day (2019 count), of which roughly 6% are trucks.
How long is I-75 SB over M-59?
The structure is 231 ft (70.3 m) long with a longest span of 81 ft (24.8 m) and a deck 75 ft wide.
Who owns I-75 SB over M-59?
It is owned by the State Highway Agency.