In 1948, the company operated 644 locomotives, 1,602 passenger cars and 8,796 freight cars on 1,581 miles of track. After 1951, both freight and passenger service lost money. The earlier expansion had left NH with a network of low-density branch lines that could not pay their own maintenance and operating costs. The freight business was short-haul, requiring switching costs that could not be recovered in short-distance rates. They operated major commuter train services in New York and Boston (as well as New Haven, Hartford and Providence), but these had always lost money; though heavily patronized, these services operated only during the morning and evening rush hours, and were unable to recover their infrastructure costs. The demise of the New Haven was likely hastened by the 1958 opening of the Connecticut Turnpike, largely paralleling the railroad’s mainline across the state, and the subsequent construction of other interstate highways. With decades of inadequate investment, the New Haven could not compete against automobiles or trucks.