Usfs RTE 3458 over Carp River
PoorPosted for loadMackinac County, Michigan · 3 MI N Burma Road · Structure no. 091005000001071
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 49 ft
- 2 main spans
- Daily traffic
- 50
- 1998 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Usfs RTE 3458 over Carp River is a wood or timber stringer/multi-beam or girder carrying Usfs RTE 3458 over Carp River in Mackinac County, Michigan. It was built in 1955, so it is 70 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 50 vehicles a day, projected to reach 15 by 2015. The structure is 49 ft (14.8 m) long and 15 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 Usfs RTE 3458 over Carp River built?
It was built in 1955, making it 70 years old in 2025.
What condition is Usfs RTE 3458 over Carp 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 October 2023.
How much traffic does Usfs RTE 3458 over Carp River carry?
About 50 vehicles per day (1998 count).
How long is Usfs RTE 3458 over Carp River?
The structure is 49 ft (14.8 m) long with a longest span of 24 ft (7.2 m) and a deck 15 ft wide.
Who owns Usfs RTE 3458 over Carp River?
It is owned by the U.S. Forest Service.