103rd Ave over N Br of Black River
PoorPosted for loadAllegan County, Michigan · Approx 0.25 MI W of 70th · Structure no. 000000000000167
- Built
- 1965
- 60 years old
- Condition
- Poor
- inspected September 2024
- Type
- Slab
- Wood or Timber
- Length
- 48 ft
- 2 main spans
- Daily traffic
- 444
- 2003 count
- Owner
- County
- County Highway Agency
About this bridge
103rd Ave over N Br of Black River is a wood or timber slab carrying 103rd Ave over N Br of Black River in Allegan County, Michigan. It was built in 1965, so it is 60 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. Its operating status is: posted for load restriction.
It carries about 444 vehicles a day, roughly 7% of them trucks, projected to reach 888 by 2023. The structure is 48 ft (14.6 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 103rd Ave over N Br of Black River built?
It was built in 1965, making it 60 years old in 2025.
What condition is 103rd Ave over N Br of 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 September 2024.
How much traffic does 103rd Ave over N Br of Black River carry?
About 444 vehicles per day (2003 count), of which roughly 7% are trucks.
How long is 103rd Ave over N Br of Black River?
The structure is 48 ft (14.6 m) long with a longest span of 24 ft (7.3 m) and a deck 30 ft wide.
Who owns 103rd Ave over N Br of Black River?
It is owned by the County Highway Agency.