Ann Arbor Road over Macon River
FairMonroe County, Michigan · 2. MI No of M 50 · Structure no. 000000000007255
- Built
- 1947
- 78 years old, rebuilt 1990
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 135 ft
- 3 main spans
- Daily traffic
- 3,140
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
Ann Arbor Road over Macon River is a steel stringer/multi-beam or girder carrying Ann Arbor Road over Macon River in Monroe County, Michigan. It was built in 1947 and reconstructed in 1990, so it is 78 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 3,140 vehicles a day, roughly 15% of them trucks, projected to reach 3,611 by 2037. The structure is 135 ft (41.1 m) long and 48 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ann Arbor Road over Macon River built?
It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1990.
What condition is Ann Arbor Road over Macon River 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 May 2024.
How much traffic does Ann Arbor Road over Macon River carry?
About 3,140 vehicles per day (2017 count), of which roughly 15% are trucks.
How long is Ann Arbor Road over Macon River?
The structure is 135 ft (41.1 m) long with a longest span of 54 ft (16.6 m) and a deck 48 ft wide.
Who owns Ann Arbor Road over Macon River?
It is owned by the County Highway Agency.