§ 58. Liability of state for damages. The state shall not be liable for damages suffered by any person from defects in state highways, except between the first day of May and the fifteenth day of November on such highways as are maintained by the state under such system as the commissioner of transportation may adopt pursuant to section twelve, but the liability for such damages shall otherwise remain as now provided by law, notwithstanding the construction or improvement and maintenance of such highways by the state under this chapter; but nothing herein contained shall be construed to impose on the state any liability for defects in bridges over which the state has no control. Within the limits of incorporated villages the state shall maintain a width of pavement equal to the width of pavement constructed or improved at the expense of the state, if a state highway, the location of the state's portion of such roadway within said incorporated limits to be determined by the center line of the roadway as shown on the plans on file with the department of transportation and the state shall be liable for damages to persons or property only when such damage shall occur as a result of the defective condition of the portion of improved highway as above described.