US 1 NB (900045) over Big Spanish Channel
FairMonroe County, Florida · Bahia Honda Key (mm 36.0) · Structure no. 900045
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 6,734 ft
- 78 main spans
- Daily traffic
- 6,850
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 1 NB (900045) over Big Spanish Channel is a prestressed concrete stringer/multi-beam or girder carrying US 1 NB (900045) over Big Spanish Channel in Monroe 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 6,850 vehicles a day, roughly 14% of them trucks, projected to reach 11,885 by 2044. The structure is 6,734 ft (2,052.5 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 1 NB (900045) over Big Spanish Channel built?
It was built in 1972, making it 53 years old in 2025.
What condition is US 1 NB (900045) over Big Spanish Channel in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.
How much traffic does US 1 NB (900045) over Big Spanish Channel carry?
About 6,850 vehicles per day (2024 count), of which roughly 14% are trucks.
How long is US 1 NB (900045) over Big Spanish Channel?
The structure is 6,734 ft (2,052.5 m) long with a longest span of 102 ft (31.1 m) and a deck 42 ft wide.
Who owns US 1 NB (900045) over Big Spanish Channel?
It is owned by the State Highway Agency.