Interlocking: Diann Tower, Dundee, MI
Diann was an interlocked grade crossing of the Ann Arbor railroad main line (Toledo to Frankfort) and the Detroit, Toledo & Ironton railroad main line (Detroit to Ironton, OH) in Dundee Township about two miles south of the village of Dundee.
This crossing was created during Ford ownership of the DT&I and the main line was rerouted at the Malinta cut-off. Ford built a sturdy electro mechanical interlocking tower here, as well as a connection for both lines on the northwest and southeast quadrants. Both lines were block signaled at this location.
This was one of the last new interlocking tower locations in Michigan.
Photo Info/Credit: Top, Dianne Tower under construction September, 1926. 2nd photo, The tower after completion. 3rd photo, the interlocking machine at Diann; the 4th photo, te CTC machine in 1981 which controlled the line between Dundee and Flat Rock yard; 5th photo, Diann Tower in 1987. [Charlie Whipp]
Location: 41o55.924'N / 83o38.250'W.
The DT&I had a 7,780' controlled passing track north of the tower. The tower controlled the south entrance and the north entrance was North Diann at milepost 38.1.
1928. The DT&I rebuilds the interlocking at Diann, adding 5 electric levers. [RSC-1929]