Ruby Canyon Road over Drainage Kd Reservoir
Monterey County, California · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ruby Canyon Road over Drainage Kd Reservoir in Monterey County, California, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 2002, making it 23 years old at the 2025 inventory.
- It carries about 1 vehicles a day (traffic count year 2015).
- It is one of 27 of the 378 inventoried bridges in Monterey County rated poor (7.1%); 27 (7.1%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated March 2017, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (35.98947, -121.1953)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 3 | 3 | Serious condition |
Bridge details
| Structure | Steel through truss |
| Length | about 60 ft |
| Location | S Old Man Canyon Sec 13 W |
| NBI structure number | DAPFORLIG000748 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | March 2017 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Monterey County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 1 Abandoned RR over Divarty Street | 1973 | 59,000 | Good |
| U.S. Highway 101 over Elkhorn Slough Tributary | 1930 | 59,000 | Fair |
| US 101 SB S101 Off over Little Bear Creek | 1965 | 49,000 | Good |
| US Highway 101 NB over Little Bear Creek | 1965 | 49,000 | Good |
| US Highway 101 SB over N101-abbott&abbott-s101 | 1954 | 41,000 | Good |
| US Highway 101 SB over Alisal Road | 1954 | 41,000 | Good |
All bridges nearby: Monterey County, CA bridge conditions · every bridge in Monterey County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.