PROBABLE RESULTS OF THE IMPROVEMENTS.

In preceding pages reference has been made to the general objects of the

improvements included in the project of the Pennsylvania Railroad

Company for the New York District. While it is impossible, in this

introductory paper, to analyze fully the transportation problem at New

York, it seems desirable to indicate briefly some of the more obvious

effects which the improvements may be expected to produce upon the

distribution and handling of traffic.

New York City owes its position as the business metropolis of the

country mainly to its magnificent harbor and the extensive waterfronts

on its deep, wide rivers, which furnish unrivaled facilities, at a short

distance from the sea, for foreign and domestic water-borne commerce,

its foreign commerce being about half the total for the whole country.

The water-transportation facilities of the port and its tributaries,

therefore, have always been guarded with jealous care, not only by the

local commercial interests but also by the General Government.

During recent years, however, the population of the metropolitan

district has increased so enormously that New York is now the greatest

terminal passenger and freight traffic center in the country; and in

manufactures it ranks first among American cities. The new commercial

interests thus created are of at least equal importance with those of

the water-borne commerce, although their existence and development are

largely the result of the water facilities of the port.

The local passenger and freight traffic of the Pennsylvania and of other

railroads reaching the west shore of the North River is conducted by

car-floats and ferry-boats which deliver their loads at piers on the

Manhattan waterfront and elsewhere in the harbor. These boats obstruct

and endanger the free navigation of the channels and occupy space along

the waterfront greatly needed for the accommodation of the long-distance

water-borne commerce, especially on the North River.

In the East River the importance of ferry-boats as a means of traffic

distribution has already been greatly reduced by the construction of

bridges and tunnels which provide for the greater part of the passenger

and vehicular traffic. The North River, however, by reason of its

greater width and the comparative slowness of its currents, is by far

the more important waterway for the use of ocean-going vessels of the

larger classes. In this river the conditions for the construction of

bridges, within the limits of commercial convenience, seem to be

practically prohibitory. Tunnels, for the transportation of passengers

and the diversion of the freight traffic from the inner waters of the

harbor, are apparently the only available means of relief.

When the new line is in operation, a very large part of the New York

passenger traffic of the Pennsylvania Railroad will be carried to the

New York Station at Seventh Avenue and 33d Street and the rest will go

to Cortlandt Street through the Hudson Company's tunnels. Thus a large

portion of the Pennsylvania passenger ferry traffic, which amounts to

more than 91,000 passengers daily, will be practically eliminated from

the water-transportation problem. In addition, a large part of the Long

Island Railroad's passengers will use the station at Seventh Avenue and

33d Street, and its ferry traffic will be reduced accordingly.

The new arrangements for the transfer of freight from Greenville to Bay

Ridge will relieve the inner waters of the harbor of a large volume of

obstructive car-float traffic. There appears to be no reason why this

traffic should not be eventually conducted through tunnels under the

outer harbor, should future transportation conditions justify the

enormous cost of such structures.

It is to be remarked that while these new arrangements greatly reduce

the passenger and freight water transportation, they have no effect on

the large vehicular traffic across the North River which must continue

to be conducted by ferries until it can be otherwise provided for. As

long as these conditions exist, ferry-boats must be used in large

numbers and continue to obstruct the North River. This difficulty

probably cannot be overcome by the construction of bridges, as in the

case of the East River, but it does not seem too much to expect that,

eventually, tunnels to provide for the vehicular traffic, like the

Blackwall tunnel under the Thames, will be established under the North

River.

It would be interesting to estimate the increase in railroad traffic

capacity resulting from these improvements, but the data required for

this purpose are not available. Some idea of the increase in passenger

traffic capacity resulting from the establishment of the tunnel line may

be obtained by comparing the proposed daily train-movements for the new

station with the train-movements at other important railroad stations.

The daily train-movements of six such stations are given in the

following table:

Total trains Movement

in and out at

for 24 hours. maximum hour.

Jersey City 281 29

Broad Street Station, Philadelphia 538 48

Union Station, St. Louis 462 89

South Terminal Station, Boston 861 87

Grand Central Station, New York 357 44

Pennsylvania Station, New York[B] 500 50

Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. Paper No. 1150 · 第 13 / 15 题