Investigators are looking to talk to construction workers and people involved in the July 4 fireworks.
The DOT will not immediately expand a slow zone to Sixth Avenue, despite requests from the community.
Milk Bar and three other local businesses have asked the DOT for bike corrals, the department said.
The change comes after calls from local leaders for traffic improvements on the Hunters Point street.
Elisa Toro, of The Bronx, was killed in December in a crash on the bridge's exit ramp.
The intersection of East 177th St. and Devoe Ave. will get improved passage to the Bronx River Greenway.
Locals say traffic safety improvements are needed on Center Boulevard.
Politicians lauded the new service, but advocates for the disabled said more could be done to help them.
The plan for 155th Street, Edgecombe Avenue and St. Nicholas Place has been in the works for years.
The plan would extend the median separating Astoria Boulevard North and Grand Central Parkway.
P.S. 41 Principal Kelly Shannon is calling on the city to put a Slow Zone on Sixth Avenue.
Residents, Community Board 10 and the Department of Transportation are at odds over the proposal.
Select Bus Service on the M60 LaGuardia Airport bus is slated to begin May 25.
The DOT said the roadway's speed limit will remain at 30 miles per hour, according to a spokesman.
LaGuardia Community College launched the Thomson Avenue study after Tenzin Drudak, 16, died in 2013.
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