M-43 over Red Cedar River
PoorIngham County, Michigan · 4.4 MI W of Williamston · Structure no. 000000000003797
- Built
- 1924
- 101 years old, rebuilt 1932
- Condition
- Poor
- inspected August 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 88 ft
- 2 main spans
- Daily traffic
- 13,900
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
M-43 over Red Cedar River is a steel girder and floorbeam system carrying M-43 over Red Cedar River in Ingham County, Michigan. It was built in 1924 and reconstructed in 1932, so it is 101 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.
It carries about 13,900 vehicles a day, roughly 3% of them trucks, projected to reach 16,354 by 2018. The structure is 88 ft (26.8 m) long and 48 ft wide. If it were closed, the detour would be 5 mi (8 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 | 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M-43 over Red Cedar River built?
It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1932.
What condition is M-43 over Red Cedar River 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 August 2024.
How much traffic does M-43 over Red Cedar River carry?
About 13,900 vehicles per day (2015 count), of which roughly 3% are trucks.
How long is M-43 over Red Cedar River?
The structure is 88 ft (26.8 m) long with a longest span of 44 ft (13.4 m) and a deck 48 ft wide.
Who owns M-43 over Red Cedar River?
It is owned by the State Highway Agency.