Borough President Oddo and Councilman Ignizio announced improvements to Page Avenue and other streets.
The explosion and building collapse is one of several in Harlem in the last few years.
A new study estimates that more than $47B would be needed to fix the city's infrastructure problems.
The water main has been fixed, the DEP said.
Fifth Avenue will remain closed between 12th and 14th streets for several days, officials said.
The firms will develop plans to improve neighborhood streetscapes, the DOT announced.
The proposal, which now goes through a formal review process, would allow newer and larger skyscrapers.
Former President Bill Clinton said the fund will invest in infrastructure for areas affected by Sandy.
Preparing for flooding is "the single most important infrastructure challenge of our time," Quinn said.
Work to replace pipes from the 1870s is cutting into foot traffic at West Village businesses.
Manhattan Borough President Scott Stringer, Public Advocate Bill de Blasio and former Comptroller Bill Thompson shared their visions of the "Future of New York City" during a panel discussion Wednesday.
Gov. Andrew Cuomo has recommended that Patrick Foye replace Chris Ward as Executive Director of the Port Authority.
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