Oh no its more Chicago- The tourist version - Page 2

flar · #21 Posted **Mar 7, 2007, 2:23 PM**

I really like all the rail infrastructure in Chicago

bc2mb · #22 Posted **Mar 12, 2007, 9:58 PM**

cool

chicago looks so massive

Vicelord John · #23 Posted **Mar 13, 2007, 10:10 PM**

Quote:

Originally Posted by giantSwan

Great pics -- i have a semi-related question....

Does anyone know the rationale for having all the public transportation in Chicago above ground? Is this because of the proximity to the lake? Or other reasons? And if it's not a engineering problem, will they ever replace lines and put them underground?

Building at grade is cheap.

Building above grade is 10X more.

Building underground is 20X more.

Probably they didnt want it at grade, and underground cost to much, leaving only one option.