Mass. Gen. Laws ch. 161, § 75: Termination of location

Section 75. A company which is granted such temporary location for the extension of its tracks shall not maintain them nor operate cars over them beyond the period during which the operation of its cars over such bridge is interrupted by reason of such alteration, improvement, rebuilding or repair, and at the end of such period shall remove its tracks from the public ways upon and over which such temporary location has been granted.