Black River Road over Upper Black River
PoorPosted for loadCheboygan County, Michigan · Sec 34 T36N R1E · Structure no. 000000000001537
- Built
- 1935
- 90 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 120 ft
- 3 main spans
- Daily traffic
- 1,500
- 2005 count
- Owner
- County
- County Highway Agency
About this bridge
Black River Road over Upper Black River is a steel stringer/multi-beam or girder carrying Black River Road over Upper Black River in Cheboygan County, Michigan. It was built in 1935, so it is 90 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 1,500 vehicles a day, projected to reach 2,700 by 2025. The structure is 120 ft (36.6 m) long and 33 ft wide. If it were closed, the detour would be 37.9 mi (61 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Black River Road over Upper Black River built?
It was built in 1935, making it 90 years old in 2025.
What condition is Black River Road over Upper Black 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 July 2024.
How much traffic does Black River Road over Upper Black River carry?
About 1,500 vehicles per day (2005 count).
How long is Black River Road over Upper Black River?
The structure is 120 ft (36.6 m) long with a longest span of 36 ft (11 m) and a deck 33 ft wide.
Who owns Black River Road over Upper Black River?
It is owned by the County Highway Agency.