State Treasurer Tim Cahill called on Pike poobahs yesterday to lower the tolls, saying a 25 percent hike in the sales tax that takes effect Saturday will pay off any lingering Big Dig debt.

"Going forward, at least to November, there is no need for toll revenue to pay the debt," said Cahill, pointing to the $275 million from the sales tax hike that's committed to the Pike. "It's pretty clear that the money the Legislature has already dedicated to the Turnpike will cover the Big Dig debt."