CONCORD, N.H. — New Hampshire’s transportation commissioner has decided against installing tollbooths on Interstate 93 in Salem.

In a letter to Gov. John Lynch Friday, Commissioner George Campbell said that even though there is a $250 million shortfall in funding for the $800 million I-93 expansion project, the state shouldn’t build the tolls.

Campbell said tolls would be a bad idea in the area because the geography would only allow all-electronic tolling, instead of open-road tolling, which is being introduced at other toll plazas. He said that users of the tolls would also be paying for a section of the project that is already funded.