William Bridges (fl. c. 1800 - 1820) was a surveyor and cartographer active in New York City early in the 19th century. Bridges is best known for his publication of New York City's grid structure in his important 1811 Commissioner's Plan of New York. The Commissioner's Plan is considered to be "the single most important document in New York City's development (Augustyn & Cohen). Unfortunately Bridges had little to do with the actual construction of the Commissioner's plan having stolen credit for the work from the actual surveyor, John Randel. Though today Randel is credited for the Commissioner's Plan, it was Bridges who profited on the original issue and successfully held the copyright. In 1807, Bridges also pirated the Mangin-Goerck Plan of New York City, attaching his own name to it as the "Bridges Plan", and publishing it in a Tourist Guide. Perhaps if Bridges had spent more time surveying than absconding with the work of others, he would have realized that the Mangin-Goerck Plan represented a speculative New York City of the future. It had streets that did not exists and a fanciful block structure that no doubt confounded any tourist's foolish enough to buy it.