SR 318 over White River
Clark County, Nevada · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 318 over White River in Clark County, Nevada, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1975, making it 50 years old at the 2025 inventory.
- It carries about 1,650 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 737 of the 1,154 inventoried bridges in Clark County rated good (63.9%); 2 (0.2%) 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 → (37.70274, -115.16382)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 29 ft |
| Location | North of Hiko |
| NBI structure number | M1495B |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nevada department of transportation.
Busiest bridges in Clark County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 15 over SR589 Sahara Av | 2001 | 296,000 | Good |
| I-15 over Flamingo Wash | 1986 | 280,000 | Good |
| I 15 over Dry Wash | 1964 | 280,000 | Fair |
| SR 595 Rainbow Bl. over US 95 | 2007 | 250,000 | Good |
| I15 over Neon Gateway | 2018 | 241,000 | Good |
| I 15 over F Street | 2014 | 201,000 | Good |
All bridges nearby: Clark County, NV bridge conditions · every bridge in Clark County · Nevada bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.