This line was built by the Wabash Railroad in 1901. It connected to the company's early 1880s-built Chicago-Montpelier line, providing service to Toledo, Ohio. It also provided connections to the company's Detroit-Saint Louis line.
In 1964, the Wabash Railroad merged with the Norfolk and Western Railroad, itself merging with the Southern Railroad in 1982 to become Norfolk Southern.
The line from Maumee to Montpelier was abandoned by Norfolk Southern in 1990. Today, it makes up "the north fork" of the Wabash Cannonball Rail Trail. At 46 miles in length, it is the longest Rail Trail in the State of Ohio.
Thanks to Aaron M. for contributing information.
At Wauseon, this line also crossed the NYC mainline at grade.
This Wabash line actually crossed the mainline of the NYC a mile and a half east of Wauseon at Hailer interlocking. The T&I interurban also crossed here. When I was young, you could walk back a lane to the site of the tower. The foundation was clearly visible. The Maumee/Montpelier line also crossed the Cincinnati Northern at West Unity, OH ... the Tecumseh Branch of the DT&I (former mainline) at Wauseon ... the Malinta Cutoff of the DT&I at Delta, OH (now the mainline of the I&O). The DT&I line that crossed here is on an elevated alignment and served a connection with the Delta yard and wye for the NYC mainline and the Montpelier/Maumee segment. The Montpelier/Maumee line continued east and eventually met the Wabash line from Fort Wayne to Toledo at the west end of the yard in Maumee. The former Cloverleaf met at the west end of the Maumee yard too.
The remainder of this Wabash line is still active thru the Maumee yard and goes east until it reaches the river and serves several large grain elevators there. There is a connection to the mainline in Toledo that is also a NS line (the former Water Level Route).