200 Years Of The Manhattan Street Grid

Tomorrow is the 200th anniversary of the approval of Manhattan's street grid, a decision that some historians say did more to create the most densely populated space in North America than any other bit of urban planning.

The grid certified by the city’s street commissioners on March 22, 1811, spurred development by establishing seven miles of regular, predictable street access. It also laid the groundwork for nearly 2,000 acres of landfill that would be added to the island over the next two centuries. The commissioners concluded that New York “is to be composed principally of the habitations of men, and that straight-sided and right-angled houses are the most cheap to build and the most convenient to live in.” The grid, which incorporated some existing roads, would also prove surprisingly resilient. It accommodated motor vehicles (after sidewalks and stoops were pruned). It allowed planners to superimpose Central Park in the 19th century and superblocks like those of Stuyvesant Town and Lincoln Center in the 20th. In the 21st, the grid was extended west to include apartment houses on Riverside Boulevard. “The 200-foot-long block is short enough to provide continuous diversity for the pedestrian, and the tradition of framing out the grid by building to the street-wall makes New York streets walkable and vibrant,” said Amanda M. Burden, the director of city planning.

The reason the grid's designers created so many crosstown streets yet so few north-south avenues is because they envisioned that most traffic would go river-to-river.

China To Create World's Largest City

Chinese urban planners will join nine large cities near Hong Kong into one sprawling 16,000 square mile city which will be 26 times larger than London. With 42 million people within its boundaries.

The new mega-city will cover a large part of China's manufacturing heartland, stretching from Guangzhou to Shenzhen and including Foshan, Dongguan, Zhongshan, Zhuhai, Jiangmen, Huizhou and Zhaoqing. Together, they account for nearly a tenth of the Chinese economy. Over the next six years, around 150 major infrastructure projects will mesh the transport, energy, water and telecommunications networks of the nine cities together, at a cost of some 2 trillion yuan (£190 billion). An express rail line will also connect the hub with nearby Hong Kong.

The project includes 3100 miles of new high-speed rail lines. By the end of the decade, China plans to create even larger mega-cities with populations of 50 - 100 million.