Michigan Compiled Laws, Chapter 211. Taxation of Real and Personal Property § 211.7v

Sec. 7v. The real property of corporations exempt under the laws of this state, by reason of paying specific taxes instead of all other taxes for the support of the state is exempt from taxation under this act. Tracks, right of way, depot grounds and buildings, machine shops, rolling stock, and all other property necessarily used in operating any railroad in this state belonging to a railroad company shall remain exempt from taxation for any purpose, except for special assessments for local improvements in cities and villages, and land owned or claimed by a railroad company not adjoining the tracks of the company.