Southbound Y-1 Local with BM1566 (GP-7) is passing through Nashua River Bridge, Nashua, NH. The staggered automatic block signal for the northbound main track (center span) is the distant signal for the "Tie Plant" Interlocking (end of double track).

Photographed by Bruce S Nelson, May 3, 1975.
Added to the photo archive by Bruce Nelson, January 3, 2010.
Railroad: Boston & Maine.

Bruce Nelson's awards:

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