A study published by TRIP—a national nonprofit transportation research group—found that San Francisco Bay Area roads are the worst in the state and are deteriorating.

TRIP also found that poor road conditions increase vehicle operating costs by about $1,000 per year. About 71 percent of paved roads in the San Francisco-Oakland area are ranked as being in “poor” condition.

The report noted that the recent approval by the Legislature of SB1, a gas tax to create $5.2 billion annually for road and other infrastructure improvements, might be repealed by Proposition 6 on the November ballot.

The report concludes “If California is unable to maintain its current level of transportation investment, the cost to the public of deficient roads, traffic congestion, and a lack of adequate roadway safety will increase and economic development opportunities and quality of life in the Golden State will be diminished.”

You can read the full report here.