MADISON, Wis. — Gov. Scott Walker is taking the unusual step of sending a public letter to Assembly Speaker Robin Vos encouraging the fellow Republican to work on road-funding solutions.

Walker released the letter Wednesday. In it, Walker defends his promise not to raise taxes or fees to pay for roads.

Vos and other Republicans have criticized Walker’s approach, saying delaying projects and borrowing more money is a political solution that doesn’t address long-term needs.

Walker said he would consider alternatives, but “we can agree that we did not get elected as conservatives to raise taxes or fees.”

Vos sent a letter back Wednesday saying Walker’s plan would mean Milwaukee freeway projects won’t be finished in their lifetimes. He said the Assembly will hold informational hearings to investigate other ramifications of Walker’s plan.