Gateway was closed (eliminating the original justification for shifting traffic to the Erie side) virtually all the EL's freight trains were shifted back to the Lackawanna side. After the New England Gateway closed, EL's management was forced to downgrade the Erie side, and even considered its abandonment west of Port Jervis. In the meantime, the EL was forced to run its long freights over the reconfigured Boonton Line, which east of Mountain View in Wayne, NJ meant running over the Erie's Greenwood Lake Branch, a line that was never intended to carry the level of freight traffic to which the EL would subject it. In 1972, the Central Railroad of New Jersey abandoned all its operations in Pennsylvania (which by that time were freight-only), causing additional through freights to be run daily between Elizabeth, NJ on the CNJ and Scranton on the EL. The trains, designated as the eastbound SE-98 and the westbound ES-99, travelled via the Lackawanna Cut-Off and were routed via the CNJ's High Bridge Branch. This arrangement ended with the creation of Conrail on April 1, 1976. During its time, the EL diversified its shipments from the growing Lehigh Valley and also procured a lucrative contract with Chrysler to ship auto components from Mount Pocono, Pennsylvania. The EL also aggressively sought other contracts with suppliers in the area, pioneering what came to be known as intermodal shipping. None of this could compensate for the decline in coal shipments, however, and, as labor costs and taxes rose, the railroad's financial position became increasingly precarious although it was stronger than some railroads in the eastern U.S. The opening of Interstates I-80, I-380, and I-81 during the early 1970s, which in effect paralleled much of the former Lackawanna mainline east of Binghamton, New York, caused more traffic to be diverted to trucks. This only helped to accelerate the EL's decline. By 1976, it was apparent that the EL was at the end of its tether, and it petitioned to join Conrail: a new regional railroad that was created on April 1, 1976, out of the remnants of seven bankrupt freight railroads in the northeastern U.S. Conrail The EL's rail property was legally conveyed into Conrail on April 1, 1976. Labor contracts limited immediate changes to the freight schedule, but in early 1979, Conrail suspended through freight service on the Lackawanna side. The railroad removed freight traffic from the Hoboken-Binghamton mainline