Complex sentence: Spokane's streets use a street grid that is oriented to the four cardinal directions; generally, the east-west roads are designated as avenues, and the north − south roads are referred to as streets.
Split into simpler sentences: Spokane's streets use a street grid that is oriented to the four cardinal directions. Generally, in Spokane the east-west roads are designated as avenues, and the north − south roads are referred to as streets.