An alley provides access to the rear of properties and may be public or private. Alleys should intersect local roads or connectors. Alleys are not for through traffic.

Similar to County roads, except under the jurisdiction of a city.

A road that is a principal carrier within neighborhoods or single land use areas. Collectors link neighborhoods with major activity centers, other neighborhoods and arterials and are generally not for [..]

A road that collects traffic from and distributes traffic to local streets within neighborhoods or industrial districts. Connectors are usually longer than local streets and carry low volumes of traff [..]

Public roads for which the Clackamas County Board of Commissioners has accepted maintenance responsibility.

Categorizing roads based on the type of service provided:  freeway/expressway, major arterial, minor arterial, collector, connector or local road.

A highway that serves inter-regional and intra-regional trips, and carries heavy volumes of traffic at high speeds. Examples:  I-205; the Milwaukie Expressway (Oregon Highway 224)

Multi-lane federal highway that provides connections to major cities, regions of the state and other states. Interstate highways are major freight routes. Maintenance responsibilities belong to the Or [..]

A classification of roads based on ownership of the road.

A road designed to provide access to abutting property and to connect to higher order roads. New local roads should intersect connectors, collectors or, if necessary, minor arterials. Traffic calming [..]