US-1 (sr 5) over Whale Harbor
GoodMonroe County, Florida · Islamorada Key (mm 83.8) · Structure no. 900076
- Built
- 1951
- 74 years old, rebuilt 1978
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 644 ft
- 7 main spans
- Daily traffic
- 20,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US-1 (sr 5) over Whale Harbor is a prestressed concrete stringer/multi-beam or girder carrying US-1 (sr 5) over Whale Harbor in Monroe County, Florida. It was built in 1951 and reconstructed in 1978, so it is 74 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 20,700 vehicles a day, roughly 17% of them trucks, projected to reach 35,914 by 2042. The structure is 644 ft (196.3 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-1 (sr 5) over Whale Harbor built?
It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1978.
What condition is US-1 (sr 5) over Whale Harbor 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 September 2023.
How much traffic does US-1 (sr 5) over Whale Harbor carry?
About 20,700 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is US-1 (sr 5) over Whale Harbor?
The structure is 644 ft (196.3 m) long with a longest span of 92 ft (28 m) and a deck 43 ft wide.
Who owns US-1 (sr 5) over Whale Harbor?
It is owned by the State Highway Agency.