I-69 WB over Cox-Doty Drain
FairSt. Clair County, Michigan · 2.7 MI SE of Capac · Structure no. 000000000009946
- Built
- 1982
- 43 years old
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 100 ft
- 1 main span
- Daily traffic
- 7,134
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
I-69 WB over Cox-Doty Drain is a prestressed concrete stringer/multi-beam or girder carrying I-69 WB over Cox-Doty Drain in St. Clair County, Michigan. It was built in 1982, so it is 43 years old, younger 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 7,134 vehicles a day, roughly 22% of them trucks, projected to reach 9,683 by 2018. The structure is 100 ft (30.5 m) long and 48 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-69 WB over Cox-Doty Drain built?
It was built in 1982, making it 43 years old in 2025.
What condition is I-69 WB over Cox-Doty Drain 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 2023.
How much traffic does I-69 WB over Cox-Doty Drain carry?
About 7,134 vehicles per day (2007 count), of which roughly 22% are trucks.
How long is I-69 WB over Cox-Doty Drain?
The structure is 100 ft (30.5 m) long with a longest span of 100 ft (30.5 m) and a deck 48 ft wide.
Who owns I-69 WB over Cox-Doty Drain?
It is owned by the State Highway Agency.