SR821 NB Heft 23.6 over SR 976 SW 40 ST Bird RD
GoodMiami-Dade County, Florida · 2 Miles South of US 41 · Structure no. 870414
- Built
- 1973
- 52 years old, rebuilt 2019
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 180 ft
- 3 main spans
- Daily traffic
- 78,100
- 2024 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
SR821 NB Heft 23.6 over SR 976 SW 40 ST Bird RD is a prestressed concrete stringer/multi-beam or girder carrying SR821 NB Heft 23.6 over SR 976 SW 40 ST Bird RD 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 78,100 vehicles a day, roughly 6% of them trucks, projected to reach 135,504 by 2042. The structure is 180 ft (54.9 m) long and 92 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR821 NB Heft 23.6 over SR 976 SW 40 ST Bird RD built?
It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2019.
What condition is SR821 NB Heft 23.6 over SR 976 SW 40 ST Bird RD 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 NB Heft 23.6 over SR 976 SW 40 ST Bird RD carry?
About 78,100 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is SR821 NB Heft 23.6 over SR 976 SW 40 ST Bird RD?
The structure is 180 ft (54.9 m) long with a longest span of 100 ft (30.5 m) and a deck 92 ft wide.
Who owns SR821 NB Heft 23.6 over SR 976 SW 40 ST Bird RD?
It is owned by the State Toll Authority.