M-46 over Seville Sumner Drain
PoorGratiot County, Michigan · @ Pingree RD · Structure no. 000000000003129
- Built
- 1936
- 89 years old, rebuilt 1963
- Condition
- Poor
- inspected May 2024
- Type
- Tee Beam
- Concrete
- Length
- 28 ft
- 1 main span
- Daily traffic
- 5,634
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
M-46 over Seville Sumner Drain is a concrete tee beam carrying M-46 over Seville Sumner Drain in Gratiot County, Michigan. It was built in 1936 and reconstructed in 1963, so it is 89 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 4 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.
It carries about 5,634 vehicles a day, roughly 9% of them trucks, projected to reach 7,954 by 2018. The structure is 28 ft (8.4 m) long and 93 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 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 M-46 over Seville Sumner Drain built?
It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1963.
What condition is M-46 over Seville Sumner Drain 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 May 2024.
How much traffic does M-46 over Seville Sumner Drain carry?
About 5,634 vehicles per day (2007 count), of which roughly 9% are trucks.
How long is M-46 over Seville Sumner Drain?
The structure is 28 ft (8.4 m) long with a longest span of 24 ft (7.4 m) and a deck 93 ft wide.
Who owns M-46 over Seville Sumner Drain?
It is owned by the State Highway Agency.