US 1 SB (900074) over Boca Chica Channel
FairMonroe County, Florida · Boca Chica Key (mm 6.0) · Structure no. 900003
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 2,635 ft
- 43 main spans
- Daily traffic
- 13,500
- 2025 count
- Owner
- State
- State Highway Agency
About this bridge
US 1 SB (900074) over Boca Chica Channel is a prestressed concrete stringer/multi-beam or girder carrying US 1 SB (900074) over Boca Chica Channel in Monroe County, Florida. It was built in 1973, so it is 52 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 6 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 13,500 vehicles a day, roughly 10% of them trucks, projected to reach 23,422 by 2045. The structure is 2,635 ft (803.1 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 | 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 SB (900074) over Boca Chica Channel built?
It was built in 1973, making it 52 years old in 2025.
What condition is US 1 SB (900074) over Boca Chica 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 January 2025.
How much traffic does US 1 SB (900074) over Boca Chica Channel carry?
About 13,500 vehicles per day (2025 count), of which roughly 10% are trucks.
How long is US 1 SB (900074) over Boca Chica Channel?
The structure is 2,635 ft (803.1 m) long with a longest span of 62 ft (18.9 m) and a deck 42 ft wide.
Who owns US 1 SB (900074) over Boca Chica Channel?
It is owned by the State Highway Agency.