Airline Road over South Br Chippewa River
PoorPosted for loadIsabella County, Michigan · 0.45M W NE Cor Sec 17 T15 · Structure no. 000000000004285
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected June 2024
- Type
- Slab
- Wood or Timber
- Length
- 52 ft
- 2 main spans
- Daily traffic
- 693
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Airline Road over South Br Chippewa River is a wood or timber slab carrying Airline Road over South Br Chippewa River in Isabella County, Michigan. It was built in 1974, so it is 51 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. Its operating status is: posted for load restriction.
It carries about 693 vehicles a day, roughly 8% of them trucks, projected to reach 845 by 2044. The structure is 52 ft (15.8 m) long and 33 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 | 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 Airline Road over South Br Chippewa River built?
It was built in 1974, making it 51 years old in 2025.
What condition is Airline Road over South Br Chippewa 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 June 2024.
How much traffic does Airline Road over South Br Chippewa River carry?
About 693 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is Airline Road over South Br Chippewa River?
The structure is 52 ft (15.8 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.
Who owns Airline Road over South Br Chippewa River?
It is owned by the County Highway Agency.