Manhattan Railway was brokered by the Interborough Rapid Transit Company in 1902, for which rapid transit services in the Bronx, of which the Third Avenue Line was a part, would eventually be coordinated alongside the new subway. Around this time, the line was electrified. As part of the Dual Contracts, this line was triple-tracked. The project, which caused minimal disruption to the line itself while works were ongoing, allowed for weekday peak direction express service and increased train capacity on the line. For New York City's transportation system, the project was "a more important engineering feat than the building of the Panama Canal" according to the IRT. The center track of the Bronx portion opened on January 17, 1916; in Manhattan it was opened on July 9, 1917. As of 1934, the following services were being operated: 3rd Avenue Local - South Ferry to 129th Street weekdays and Saturdays day and evenings, South Ferry to Bronx Park Sundays day and evenings, also between City Hall and Bronx Park weekdays AM and PM peak, also Saturdays AM peak. During late nights, a shuttle was operated between South Ferry and Canal Street connecting with trains from City Hall to Bronx Park. 3rd Avenue Thru-Express - City Hall to 241st St via White Plains Road Line weekday and Saturday AM peak northbound and weekday PM peak southbound, using the center express track south of Tremont Avenue. All other hours a shuttle operated between 241st Street and Fordham Road. 3rd Avenue Local-Express - City Hall to Bronx Park - weekdays and Saturdays day and evening, using the center express track south of 129th Street southbound until noon and northbound afternoon thru evening. Trains running in the opposite direction made all local stops. In December 1937, some weekday midday and evening, Saturday midday thru evening local-expresses, and all Sunday and late-night locals were extended to 241st Street, replacing shuttles except northbound in the AM peak and southbound in the PM peak. In 1943, Sunday evening local trains were rerouted to City Hall, with shuttles from Canal Street running to South Ferry. On November 5, 1946, service to Freeman Street was stopped, and all weekday and Saturday morning peak locals were routed to South Ferry. In 1947, Saturday service was further reduced. 129th Street local trains were eliminated, as were morning peak thru-expresses, which were changed to local-expresses. Saturday midday and evening local-expresses ran from South