SR821 NB Heft 22.4 over SW 56 ST Miller RD
GoodMiami-Dade County, Florida · 0.97 Mi. N of SR-986 · Structure no. 870412
- Built
- 1972
- 53 years old, rebuilt 2019
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 206 ft
- 2 main spans
- Daily traffic
- 71,700
- 2024 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
SR821 NB Heft 22.4 over SW 56 ST Miller RD is a prestressed concrete stringer/multi-beam or girder carrying SR821 NB Heft 22.4 over SW 56 ST Miller RD in Miami-Dade County, Florida. It was built in 1972 and reconstructed in 2019, so it is 53 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 71,700 vehicles a day, roughly 6% of them trucks, projected to reach 124,400 by 2042. The structure is 206 ft (62.8 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 22.4 over SW 56 ST Miller RD built?
It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2019.
What condition is SR821 NB Heft 22.4 over SW 56 ST Miller 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 22.4 over SW 56 ST Miller RD carry?
About 71,700 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is SR821 NB Heft 22.4 over SW 56 ST Miller RD?
The structure is 206 ft (62.8 m) long with a longest span of 103 ft (31.4 m) and a deck 92 ft wide.
Who owns SR821 NB Heft 22.4 over SW 56 ST Miller RD?
It is owned by the State Toll Authority.