SW 312th Street over Canal C-103-N
GoodMiami-Dade County, Florida · 0.4 Mi. W of SW 137th Ave · Structure no. 874353
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 55 ft
- 2 main spans
- Daily traffic
- 3,946
- 2024 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
SW 312th Street over Canal C-103-N is a prestressed concrete slab carrying SW 312th Street over Canal C-103-N in Miami-Dade County, Florida. It was built in 1966, so it is 59 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 3,946 vehicles a day, roughly 2% of them trucks, projected to reach 6,846 by 2042. The structure is 55 ft (16.8 m) long and 80 ft wide. If it were closed, the detour would be 3.1 mi (5 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. |
| 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 SW 312th Street over Canal C-103-N built?
It was built in 1966, making it 59 years old in 2025.
What condition is SW 312th Street over Canal C-103-N 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 SW 312th Street over Canal C-103-N carry?
About 3,946 vehicles per day (2024 count), of which roughly 2% are trucks.
How long is SW 312th Street over Canal C-103-N?
The structure is 55 ft (16.8 m) long with a longest span of 28 ft (8.4 m) and a deck 80 ft wide.
Who owns SW 312th Street over Canal C-103-N?
It is owned by the City or Municipal Highway Agency.