I-496 WB over Forest RD
FairIngham County, Michigan · In Lansing (forest Rd) · Structure no. 000000000003781
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 109 ft
- 3 main spans
- Daily traffic
- 41,388
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
I-496 WB over Forest RD is a prestressed concrete stringer/multi-beam or girder carrying I-496 WB over Forest RD in Ingham 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 41,388 vehicles a day, roughly 5% of them trucks, projected to reach 46,768 by 2039. The structure is 109 ft (33.1 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| 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 I-496 WB over Forest RD built?
It was built in 1963, making it 62 years old in 2025.
What condition is I-496 WB over Forest RD 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 December 2024.
How much traffic does I-496 WB over Forest RD carry?
About 41,388 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is I-496 WB over Forest RD?
The structure is 109 ft (33.1 m) long with a longest span of 41 ft (12.6 m) and a deck 63 ft wide.
Who owns I-496 WB over Forest RD?
It is owned by the State Highway Agency.