The Alaska Department of Transportation & Public Facilities works to provide safe movement for people and material goods throughout the state. The department, also known as DOT&PF, designs, constructs, operates and maintains the state s transportation infrastructure. It maintains more than 5,000 miles of paved and gravel highways. The department is operated by the government of the state of Alaska. The Alaska Department of Transportation & Public Facilities has over 300 aviation facilities that include nearly 260 airports and approximately 40 harbors. It maintains a fleet of more than 10 vessels and offers online travel information. The department s measurement standards and commercial vehicle enforcement division works to ensure accurate trade measurements.