Nothing in this act contained shall be so construed as to alter or affect the duty of said telegraph, telephone, light, power, street passenger railway, motor traction, gas, or water company to properly erect, or construct and maintain, its poles, wires, conduits, cables, pipes or mains, or to relieve it from liability for negligence in regard thereto, either primarily to the person injured or secondarily to the municipal corporation, if judgment is recovered against it by the person injured by reason of such negligence.
72 P.S. § 6167