It's just three days until the Fourth of July and the big Macy's Fireworks Spectacular which will be over the Hudson River, for a second year in a row (the Hudson apparently allows for bigger barges, which then results in a bigger display). An estimated 40,000 shells will explode in a 26-minute period! Here's the deal:

The fireworks will be set off at about 9:20 p.m. and the barges are set up in the river between 24th and 50th Street. Macy's says:

For the best live view of the show, spectators are encouraged to stake a spot starting at approximately 4 p.m. along the West Side Highway from 24th to 57th Streets. Revelers situated along this public viewing area will enjoy front row sights of the show and a special FDNY Fireboat Water Show featuring New York’s bravest sailing two Marine Division fireboats spraying red, clear and blue water arcs up 300 feet in the air in a patriotic salute to America’s independence. Macy’s and the NYPD kindly request that spectators refrain from bringing large bags/containers, as all will be subject to security checks.

1010WINS will be airing the simulcast. For those of you at home, you can watch the NBC broadcast—not only will Nick Cannon and Alison Sweeny be hosting from the Norwegian Epic cruise, JUSTIN BIEBER will be performing. Viewing locations and a map of the barges are after the jump. And if want to share your photographs of the festivities, you can tag them "gothamist" on Flickr or send them to photos@gothamist.com!

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Below are further details from Macy's:

Viewing locations:
West Side Highway: North-bound lanes and 12th Avenue between 23rd and 59th Streets
Selected side streets between 11th and 12th Avenues
PIER 54 (limited access from 14th Street)
PIER 84 (limited access from 44th Street)

Spectators can access the viewing locations at these points:
24th Street
26th through 30th Streets
34th Street
40th through 44th Streets
47th Street
49th through 52nd Streets
54th Street
56th through 57th Streets


Viewing for people with disabilities will be available at Dewitt Clinton Park located W.52nd street and 11th Avenue.

VEHICULAR TRAFFIC DETOURS
West Side Highway
Vehicular traffic closed from 59th Street to 22nd Street on 12th Avenue
All North-bound traffic to be diverted at 22nd Street to 11th Avenue
All South-bound traffic to be diverted at 10th Avenue above 59th Street
THE FOLLOWING AREAS ARE NOT VIEWING LOCATIONS FOR THE
2010 MACY’S 4th Of July FIREWORKS
The East River
Battery Park
Battery Park City
All Hudson River Piers (except limited access to PIER 54 and PIER 84)
Hudson River Park Promenade between W. Houston and 59th Street
Hudson River Park Bike Path between W. Houston and 59th Street
The best way to attend the show is by public transportation via the Metropolitan Transit Authority. Due to the expected high volume of traffic, revelers are urged to leave their cars at home. Parking is not available in the viewing areas. We recommend a round trip fare with a Metrocard™ purchased in advance. Additional buses, subways and MTA trains will be available to and from the event. Local holiday schedules will be in effect. Attendees should check for exact times. For additional information please contact the MTA at the Transit Hotline (718) 330-1234, or visit www.mta.info for “Current Service Status,” as well as to plan trips with “Plan & Ride.”

The following buses, subways and commuter trains will transport viewers to and from the Macy’s Fireworks:

BUS ROUTES (Running on Sunday Schedules)
Uptown
M11 - via Tenth Avenue
M10 - via Central Park West
M20 - via Eighth Avenue
Downtown
M11 - via Ninth Avenue
M20 - via Seventh Avenue
Crosstown
M14, M23, M34, M42, M31, & M57

SUBWAY ROUTES (Running on Sunday Schedules)
A, E, L to 14th Street and & 8th Avenue
E to 23rd Street & 8th Avenue
A, E to 34th Street & 8th Avenue
A, E to 42nd Street & 8th Avenue
1, 2, 3, N, R, Q, S, 7 to 42nd Street
E to 50th Street & 8th Avenue
A, D, 1 to 59th Street - Columbus Circle

SUBURBAN/COMMUTER ROUTES
PATH
Exit 23rd and 33rd Streets
LIRR/NJ Transit/Amtrak
From Long Island and New Jersey to Penn Station
Metro North
From Connecticut, Westchester, Duchess and Putnam Counties to Grand Central Station at 42nd Street/Park Avenue

EMERGENCY MEDICAL FACILITIES
New York City Emergency Medical Services and health services personnel will be positioned at the major viewing locations along 12th Avenue between 22nd and 59th Streets. For further assistance, contact a policeman in your viewing area.

WATERCRAFT VIEWING
The Coast Guard will establish a safety zone and spectator vessel viewing areas throughout portions of the Hudson River, which will be in effect from approximately 7:30pm to 11:00pm on the 4th of July. No vessels will be allowed to transit the Safety Zone without the permission of the Captain of the Port. No vessel will be allowed to anchor in the spectator viewing areas. The limits of this safety zone will be delineated by the following boundaries.
Waterway Restriction Northern Boundary: North of a line drawn from Pier 11A, Weehawken, NJ to 70th Street, Manhattan, NY.

Safety Zone Northern Boundary: South of line drawn from Pier 8, Weehawken, NJ to 62nd Street, Manhattan, NY.
Approximate Position: 40º 46’ 25.75’’N/ 074º 00’ 4.0’’W

Safety Zone Southern Boundary: South of a line drawn from Pier 10, 11th Street in Hoboken, NJ to 19th Street, Pier 60, Chelsea Piers.
Approximate Position: 40º 44’ 51.90’’N/ 074º 01’ 3.55’’W

Waterway Restriction Southern Boundary: North of a line drawn from the northwest corner of Pier 40, Manhattan, NY to NJ City Piers, NJ.

For additional information, the general public should call the Macy’s Fireworks Hot Line at (212) 494-4495. For viewing tips and additional information concerning nautical safety zones, mariners should call Macy’s Fireworks Marine Hot Line at (212) 494-5243.