STATE COLLEGE — Fewer Pennsylvania roads used by heavy vehicles tied to the Marcellus Shale need major repair this year because the state and natural gas industry are working closer together to keep an eye on the roadways, a state transportation official said.

PennDOT deputy secretary Scott Christie said 10 miles of roads have major damage at least partially caused by trucks working with companies drilling into the shale, down from about 400 miles across the commonwealth last year.