Allen RD over I-69
PoorSt. Clair County, Michigan · 2.1 MI NW of I-94 · Structure no. 000000000009936
- Built
- 1966
- 59 years old, rebuilt 1999
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 222 ft
- 4 main spans
- Daily traffic
- 883
- 1992 count
- Owner
- State
- State Highway Agency
About this bridge
Allen RD over I-69 is a steel stringer/multi-beam or girder carrying Allen RD over I-69 in St. Clair County, Michigan. It was built in 1966 and reconstructed in 1999, so it is 59 years old, older than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 883 vehicles a day, roughly 2% of them trucks, projected to reach 500 by 1977. The structure is 222 ft (67.7 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Allen RD over I-69 built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1999.
What condition is Allen RD over I-69 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.
How much traffic does Allen RD over I-69 carry?
About 883 vehicles per day (1992 count), of which roughly 2% are trucks.
How long is Allen RD over I-69?
The structure is 222 ft (67.7 m) long with a longest span of 78 ft (23.8 m) and a deck 35 ft wide.
Who owns Allen RD over I-69?
It is owned by the State Highway Agency.