SR821 SB Heft 23.5 over Bird RD Canal
GoodMiami-Dade County, Florida · 700 Ft. S of SR 976 · Structure no. 870207
- Built
- 1973
- 52 years old, rebuilt 2019
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 87 ft
- 1 main span
- Daily traffic
- 71,700
- 2024 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
SR821 SB Heft 23.5 over Bird RD Canal is a prestressed concrete stringer/multi-beam or girder carrying SR821 SB Heft 23.5 over Bird RD Canal in Miami-Dade County, Florida. It was built in 1973 and reconstructed in 2019, so it is 52 years old, older than the Florida average of 41.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 71,700 vehicles a day, roughly 6% of them trucks, projected to reach 124,400 by 2042. The structure is 87 ft (26.5 m) long and 102 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR821 SB Heft 23.5 over Bird RD Canal built?
It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2019.
What condition is SR821 SB Heft 23.5 over Bird RD Canal in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.
How much traffic does SR821 SB Heft 23.5 over Bird RD Canal carry?
About 71,700 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is SR821 SB Heft 23.5 over Bird RD Canal?
The structure is 87 ft (26.5 m) long with a longest span of 87 ft (26.5 m) and a deck 102 ft wide.
Who owns SR821 SB Heft 23.5 over Bird RD Canal?
It is owned by the State Toll Authority.