(a) An authority may impose a toll for transit over an existing free road, street, or public highway transferred to the authority under this chapter.(b) An authority may construct a grade separation at an intersection of a turnpike project with a railroad or highway and change the line or grade of a highway to accommodate the design of the grade separation. The action may not affect a segment of the state highway system without the department's consent. The authority shall pay the cost of a grade separation and any damage incurred in changing a line or grade of a railroad or highway as part of the cost of the turnpike project.(c) If feasible, an authority shall provide access to properties previously abutting a county or other public road that is taken for a turnpike project and shall pay abutting property owners the expenses or any resulting damages for a denial of access to the road. Added by Acts 1997, 75th Leg., ch. 1171, Sec. 7.24, eff. Sept. 1, 1997.