Black Rock Rd over I 15; NB
Mohave County, Arizona · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Black Rock Rd over I 15; NB in Mohave County, Arizona, 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 1965, making it 60 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 462 of the 640 inventoried bridges in Mohave County rated good (72.2%); 4 (0.6%) 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 → (36.9814, -113.6452)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous concrete tee beam |
| Length | about 134 ft |
| Location | 2.1 mi SW Utah State Line |
| NBI structure number | 01115 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
Busiest bridges in Mohave County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 95 over Wash | 1970 | 52,726 | Good |
| I 15 over Virgin River | 2023 | 32,832 | Good |
| I 40 & Beverly Ave over Wash | 1981 | 32,763 | Good |
| SR 95 over Dump Wash | 1989 | 32,600 | Good |
| I 15 over Virgin River | 1967 | 32,192 | Poor |
| I 15 over Virgin River | 1972 | 32,011 | Fair |
All bridges nearby: Mohave County, AZ bridge conditions · every bridge in Mohave County · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.