. Electric railway journal . y was designed andconstructed, a high-tension transmission line miles longwas erected and five electric locomotives were built. Atnil time during the construction work was the operationof trains through the tunnel by steam locomotives inter-fered with, although the installation of the wires and sup- time required for freight trains results in frequent block-ades at the portals and long delays. When the Boston &Maine passed into the control of the New York, NewHaven & Hartford Railroad in the summer of 1910, one ofthe first official acts of President Mellen of
. Electric railway journal . y was designed andconstructed, a high-tension transmission line miles longwas erected and five electric locomotives were built. Atnil time during the construction work was the operationof trains through the tunnel by steam locomotives inter-fered with, although the installation of the wires and sup- time required for freight trains results in frequent block-ades at the portals and long delays. When the Boston &Maine passed into the control of the New York, NewHaven & Hartford Railroad in the summer of 1910, one ofthe first official acts of President Mellen of the New Havenwas to order the immediate electrification of the Hoosactunnel and the approaches at each end, including the NorthAdams yard. The single-phase alternating-current system with over-head catenary construction and 25-cycle, 11,000-volt currentwas adopted in view of the marked success of this systemon the main line of the New York, New Haven & HartfordRailroad between Woodlawn, N. Y., and Stamford, Hoosac Tunnel—Cross-Catenary Construction in North Adams Yard ports in the tunnel was carried on under the most tryingand dangerous conditions. The Hoosac tunnel is the longest railroad tunnel in theUnited States. It pierces the range of high hills betweenthe valleys of the Hoosac and Deerfield Rivers, and is25,031 ft. long from portal to portal. It was begun in 1851by the Troy & Greenfield Railroad and it took twenty-fouryears to complete the work. The first train went throughthe tunnel on Feb. 9, 1875. As it forms part of the main lineof the Fitchburg Division of the Boston & Maine Railroadconnecting Boston with Albany and Troy, N. Y., the trafficpassing through it is very heavy, averaging 95 to 100 trainsper day in both directions. With steam locomotives haul-ing trains the twelve minutes required to pass through thetunnel cause great discomfort to passengers, and the longer The electrification project was assigned to the engineer-ing department of the New York,
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