State Highway Naming
The approved format for State Highway naming in Utah is: SR-##
Locking Standard
In Utah we have a set minimum standard for locking roads based on segment type. Any road of a certain segment type must be locked at least to the rank (level) in the chart below. Roads may be locked higher for protection and special situations (areas with construction, tricky design, frequent mistakes, imaging inaccuracies, and the like), but should not be locked lower.
| Segment Type | Statewide |
|---|---|
| Freeway | 4 |
| Ramp | Highest rank of connected segments |
| Major Highway | 3 |
| Minor Highway | 2 |
| Primary Street | 2 |
| Street | 1 |
| • • • • Ferry • • • • | 5 |
| |-|-|-|-|-|-|-|-|-| Railroad |-|-|-|-|-|-|-|-|-| | 2 |
Please reference the map to the right for areas included in the Urban Lock level. The Urban Lock Level area includes all of the follow counties: Salt Lake County, Davis County, Weber County, Morgan County, Cache County, and portions of Utah County (Everything W of Thistle Junction (US-6/US-89 Jct), Tooele County (including the city of Tooele), Box Elder County, and the northern tips of Juab County (to include Mona and Eureka/Mammoth areas).
All metro areas west of the Wasatch Front, out to the western edge of the Great Salt Lake are included in the Urban Lock area.
Functional Classification
See Utah/Major roads for Utah Functional Classification guidelines.