While the South Carolina House is taking the week off, state senators are debating how to get more money for the state’s roads. The Senate has spent most of its first five weeks in session discussing roads. But the debate will be on the floor today. The proposal getting the most attention would raise the gas tax by 12 cents a gallon over three years and increase or add a number of other fees. Within five years, an estimated $723 million extra would be put into roads. But the proposal only cuts income and other taxes by $400 million over that period, and Gov. Nikki Haley and other conservative lawmakers want an even swap across the board.