NASHVILLE, Tenn. (AP) -- A report released by a state commission says Tennessee needs $38 billion between now and 2015 to improve public infrastructure.

Released by the Tennessee Advisory Commission on Intergovernmental Relations, the report shows what type of improvements are needed, from repairing roads and bridges to adding additional water lines and sewers.

The Tennessean reports that the study is designed to help local officials with short- and long-term planning, match limited funding with critical needs and increase public awareness in cities about their public infrastructure networks.

The report shows that transportation projects are the state's biggest need. There are nearly 4,000 transportation and utility projects needed across Tennessee, totaling $19.1 billion.

Schools, and health, safety and welfare projects, also are needed.