N Miami Avenue over Biscayne Canal
FairMiami-Dade County, Florida · 400FT. N of NW 146 Street · Structure no. 874035
- Built
- 1947
- 78 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 128 ft
- 5 main spans
- Daily traffic
- 7,815
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N Miami Avenue over Biscayne Canal is a steel stringer/multi-beam or girder carrying N Miami Avenue over Biscayne Canal in Miami-Dade County, Florida. It was built in 1947, so it is 78 years old, older than the Florida average of 41.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 7,815 vehicles a day, roughly 2% of them trucks, projected to reach 13,294 by 2042. The structure is 128 ft (38.9 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| 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 N Miami Avenue over Biscayne Canal built?
It was built in 1947, making it 78 years old in 2025.
What condition is N Miami Avenue over Biscayne Canal in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.
How much traffic does N Miami Avenue over Biscayne Canal carry?
About 7,815 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is N Miami Avenue over Biscayne Canal?
The structure is 128 ft (38.9 m) long with a longest span of 26 ft (8 m) and a deck 33 ft wide.
Who owns N Miami Avenue over Biscayne Canal?
It is owned by the County Highway Agency.