SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D
GoodMiami-Dade County, Florida · 1.1 Miles South of US-1 · Structure no. 870392
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 208 ft
- 2 main spans
- Daily traffic
- 61,650
- 2024 count
- Owner
- Toll Authority
- State Toll Authority
About this bridge
SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D is a prestressed concrete stringer/multi-beam or girder carrying SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D in Miami-Dade County, Florida. It was built in 1972, 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 61,650 vehicles a day, roughly 6% of them trucks, projected to reach 106,963 by 2042. The structure is 208 ft (63.4 m) long and 58 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D built?
It was built in 1972, making it 53 years old in 2025.
What condition is SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D 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 March 2024.
How much traffic does SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D carry?
About 61,650 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D?
The structure is 208 ft (63.4 m) long with a longest span of 104 ft (31.7 m) and a deck 58 ft wide.
Who owns SR821 NB Heft 11.7 over SW 216 ST Hainlin Mill D?
It is owned by the State Toll Authority.