5LONG Rapids Road over N Br Thunder Bay River
PoorPosted for loadAlpena County, Michigan · 9 MI N W of Alpena · Structure no. 000000000000343
- Built
- 1978
- 47 years old
- Condition
- Poor
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 140 ft
- 3 main spans
- Daily traffic
- 1,150
- 2010 count
- Owner
- County
- County Highway Agency
About this bridge
5LONG Rapids Road over N Br Thunder Bay River is a prestressed concrete box beam or girders - multiple carrying 5LONG Rapids Road over N Br Thunder Bay River in Alpena County, Michigan. It was built in 1978, so it is 47 years old, younger 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 1,150 vehicles a day, projected to reach 1,400 by 2030. The structure is 140 ft (42.6 m) long and 33 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 5LONG Rapids Road over N Br Thunder Bay River built?
It was built in 1978, making it 47 years old in 2025.
What condition is 5LONG Rapids Road over N Br Thunder Bay 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 5LONG Rapids Road over N Br Thunder Bay River carry?
About 1,150 vehicles per day (2010 count).
How long is 5LONG Rapids Road over N Br Thunder Bay River?
The structure is 140 ft (42.6 m) long with a longest span of 47 ft (14.3 m) and a deck 33 ft wide.
Who owns 5LONG Rapids Road over N Br Thunder Bay River?
It is owned by the County Highway Agency.