The Grid Plan
Chicago follows the great American grid plan, with major streets following section lines every one mile. This plan was developed by the Federal Government in 1786.
Abraham Lincoln was a surveyor in Illinois. His equipment.
Plank Roads
heavy stringers
on each side
16-foot roadway
across them were laid (but not spiked) heavy planks of pine and hemlock, oak or walnut.
$2000 per mile
$2000 per mile
Very profitable at first.
Toll gates at intervals of 5 or 6 miles
RAILROADS
Chicago Cable Cars
Airports