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In Chicago, a typical city block is 330 by 660 feet (100 m × 200 m), [2] meaning that 16 east-west blocks or 8 north-south blocks measure one mile, which has been adopted by other US cities. In much of the United States and Canada, the addresses follow a block and lot number system , in which each block of a street is allotted 100 building ...
As roads have typically been laid out along section boundaries spaced one mile (1.6 km) apart, growing urban areas have adopted road grids with mile-long "blocks" as their primary street network. Such roads in urban areas are known as section line roads , usually designed primarily for automobile travel and limited in their use for non ...
With the surveying and grid plan completed, Waller and his associates drew up a plat dividing the city blocks into land lots. The first auction of lots was held on August 1, 1839, [1] under a group of live oak trees in what was to be the city's southwestern public square; these trees have since been known as the "Auction Oaks". The auction ...
a very large block measuring 113 by 113 m (371 by 371 ft), far larger than the old city blocks and larger than any Roman, Greek blocks and their mutations (see drawing below); a 20 m (66 ft) road width (right of way) compared with mostly 3 m in the old city; square blocks with truncated corners; and
The primary grid pattern is of quarter sections (1 ⁄ 2 mi × 1 ⁄ 2 mi (800 m × 800 m)). In U.S. land surveying under the Public Land Survey System (PLSS), a section is an area nominally one square mile (2.6 square kilometers), containing 640 acres (260 hectares), with 36 sections making up one survey township on a rectangular grid.
In the 1950s and 1960s, a network of superhighways was built radiating from the city center. [1] As the city grew and annexed adjacent towns, problems arose with duplicate street names and a confusing numbering system based on the Chicago River. On June 22, 1908, the city council adopted a system proposed by Edward P. Brennan; [2] amended June ...
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In Chicago's grid system, Halsted Street marks 800 West, 1 mile (1.6 km) west of State Street, from Grace Street (3800 N) in Lakeview south to the city limits at the Little Calumet River (13000 S) in West Pullman, a length of 168 north-south Chicago blocks.