US-1 SB (900086) over Cow Key Channel
Monroe County, Florida · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-1 SB (900086) over Cow Key Channel in Monroe County, Florida, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1985, making it 40 years old at the 2025 inventory.
- It carries about 23,000 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 32 of the 98 inventoried bridges in Monroe County rated good (32.7%); 5 (5.1%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (24.5708, -81.74954)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 360 ft |
| Location | Key West (mm 4.1) |
| NBI structure number | 900125 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Florida department of transportation.
Busiest bridges in Monroe County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 1 (SR 5) over Rockland Channel | 1979 | 47,000 | Good |
| US 1 (SR 5) over Salt Run | 1992 | 38,500 | Fair |
| US 1 (SR 5) over Naval Base Blvd | 1988 | 27,500 | Good |
| US 1 (SR 5) over Jewfish Creek | 2008 | 26,500 | Good |
| US 1 (NB & SB) over Manatee Creek | 2008 | 26,500 | Fair |
| US-1 (SR-5) over Vaca Cut | 1982 | 25,000 | Fair |
All bridges nearby: Monroe County, FL bridge conditions · every bridge in Monroe County · Florida bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.