Maggie's Farm

A history from Wikipedia:

In 1847, the City of New York authorized street-level railroad tracks down Manhattan’s West Side. For safety, the railroads hired men — the "West Side Cowboys" — to ride horses and wave flags in front of the trains.[5] Yet so many accidents occurred between freight trains and other traffic that Tenth Avenue became known as "Death Avenue".[6]

After years of public debate about the hazard, in 1929 the city and the state of New York and the New York Central Railroad agreed on the West Side Improvement Project, which included the High Line. The 13-mile (21 km) project eliminated 105 street-level railroad crossings and added 32 acres (13 ha) to Riverside Park. It cost over $150 million, about $2 billion in 2009 dollars.[5]

The High Line, then a portion of the West Side Line opened to trains in 1934. It originally ran from 34th Street to St. John's Park Terminal, at Spring Street. It was designed to go through the center of blocks, rather than over the avenue, to avoid the drawbacks of elevated trains. It connected directly to factories and warehouses, allowing trains to roll right inside buildings. Milk, meat, produce, and raw and manufactured goods could be transported and unloaded without disturbing traffic on the streets.[5] This also reduced pilferage for the Bell Laboratories Building, now the Westbeth Artists Community, and the Nabisco plant, now Chelsea Market, which were served from protected sidings within the structures.[7]

The train also passed underneath the Western Electric complex at Washington Street. This section has survived until today and is not connected with the rest of the developed park.[8]

The growth of interstate trucking in the 1950s led to a drop in rail traffic throughout the nation. In the 1960s, the southernmost section of the line was demolished. This section started at Gansevoort Street and ran down Washington Street as far as Spring Street just north of Canal Street,[9] representing almost half of the line. The last train on the remaining part of the line was operated by Conrail in 1980 with three carloads of frozen turkeys.[5]

feeb here:

$150 million c.1930. One wonders how they found that kind of money for this project and what percentage each of the participants had to kick in? Did it ever pay for itself?

Anyhow, it would have been interesting to see it used for its intended purpose back in the day.