WB NW 21st Street over NW 42nd Ave & Off Ramp
GoodMiami-Dade County, Florida · Mia Interchange · Structure no. 874645
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 197 ft
- 1 main span
- Daily traffic
- 19,560
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
WB NW 21st Street over NW 42nd Ave & Off Ramp is a steel continuous stringer/multi-beam or girder carrying WB NW 21st Street over NW 42nd Ave & Off Ramp in Miami-Dade County, Florida. It was built in 2008, so it is 17 years old, younger 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 19,560 vehicles a day, roughly 3% of them trucks, projected to reach 30,615 by 2042. The structure is 197 ft (60.1 m) long and 68 ft wide.
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 WB NW 21st Street over NW 42nd Ave & Off Ramp built?
It was built in 2008, making it 17 years old in 2025.
What condition is WB NW 21st Street over NW 42nd Ave & Off Ramp 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 May 2024.
How much traffic does WB NW 21st Street over NW 42nd Ave & Off Ramp carry?
About 19,560 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is WB NW 21st Street over NW 42nd Ave & Off Ramp?
The structure is 197 ft (60.1 m) long with a longest span of 197 ft (60.1 m) and a deck 68 ft wide.
Who owns WB NW 21st Street over NW 42nd Ave & Off Ramp?
It is owned by the County Highway Agency.