CONCORD - New Hampshire's road and bridges are deteriorating and will get worse unless the state commits more money to its infrastructure, according to a national transportation research group founded by industry.

The average New Hampshire driver spends $323 annually in vehicle operating costs due to the conditions of the state's roads and bridges and southern New Hampshire drivers pay $503 annually, according to a report on New Hampshire's roads and bridges released by TRIP.
 
The state's vehicle owners pay $333 million annually in maintenance and repair costs because of the poor condition of state roads, the report states.

The group estimates the state needs to spend $1.3 billion to address the current backlog of needed pavement and bridge work.