Arcades 
calls for condemnation merely of the right of way for 
one storey in height and for a depth equal to the width 
of the walk. The property holder is still left with 
the use of the space above the arcade and the vault 
privileges below the surface. 
It is evident that the cost of a new street with ar¬ 
cades is very much less than one where the whole walk 
is thrown into the street and the whole area condemned. 
In the case of a street newly laid out, sixty feet wide 
from curb to curb with a fifteen-foot walk on each side, 
the relative cost of a street with sidewalk arcades would 
vary from seventy-five per cent, to ninety per cent, of 
the expense of an ordinary street, and perhaps would 
be even less in an office-building district. In the case 
of street widenings, the saving would be even greater; 
for by the ordinary process the building is often a total 
loss, and its value must be added to cost of the land 
acquired. Thus if a sixty-foot street were to be widened 
to ninety feet, the cost of arcading the buildings upon 
both sides of the street for a depth of fifteen feet each 
would be probably from twenty per cent, to fifty per 
cent, of the cost of taking thirty feet on one side (the 
least expensive); and where the buildings are in good 
condition and many-storied, the cost will be even less 
than twenty per cent. 
THE ARCADES OF MADISON SQUARE 
GARDEN 
H ence, where land is very valu¬ 
able and where additional provision 
is needed for pedestrians or for a 
moderate extension of vehicular 
traffic, the sidewalk arcade will often 
be found a most satisfactory and 
ARCADES OF THE RUE DE RIVOLI (FACING THE TUILERIES) IN PARIS 
256 
