The Maricopa County Department of Transportation (MCDOT) plans, designs, builds, operates and maintains roadways within the County's unincorporated areas.
MCDOT's transportation system includes:
5,216 miles of roadway
435 bridges and structures
160 traffic signals
57,369 traffic signs
About Maricopa County
This transportation system supports Maricopa County's population of more than four million residents across 9,224 square miles. Maricopa County is the fourth most populous county in the United States and is larger than Connecticut, Delaware and Rhode Island combined. Maricopa County is administered by a County Manager who reports to the five member Board of Supervisors elected by the public. MCDOT's Director is appointed by the Board of Supervisors and leads the Department's Leadership Team. MCDOT's funding is primarily derived from Highway User Revenue Funds, as well as other federal and state sources.