Question: How long is the tributary of the East River that the Grand Street Bridge crosses?

Context paragraphs:
Hell Gate Bridge: The Hell Gate Bridge, originally the New York Connecting Railroad Bridge or The East River Arch Bridge, is a 1017 ft steel through arch railroad bridge in New York City.  The bridge crosses the Hell Gate, a strait of the East River, between Astoria in Queens and Randalls and Wards Islands in Manhattan.

John Basilone Veterans Memorial Bridge: The John Basilone Veterans Memorial Bridge is a bridge in New Jersey that crosses the Raritan River.  The bridge was built in 2005 to replace the smaller Nevius Street Bridge built in 1886.  The Nevius Street Bridge today functions as a pedestrian bridge.  The bridge connects First Avenue and what used to be the short one way block of Lyman Street in Raritan with River Road in Hillsborough.  After crossing into Hillsborough, the road curves to meet up with the old alignment with the Nevius Street Bridge.  The bridge is named for local World War II hero, John Basilone.  The bridge has a pedestrian tunnel underneath its northern approach, as part of the Raritan River Greenway.

Grand Street (LIRR Evergreen Branch station): Grand Street was a train station along the Evergreen Branch of the Long Island Rail Road.  The station was built on May 15, 1878 by the South Side Railroad of Long Island between Metropolitan Avenue and Grand Street (Brooklyn) at the East River Ferry.  From the Greenpoint Terminal it took 10 minutes to get here.  Grand Street was closed on September 28, 1885.

Grand Street Bridge (Connecticut): The Grand Street Bridge was a double-leaf deck-girder bascule bridge in Bridgeport, Connecticut, United States, that spanned the Pequonnock River and connected Grand Street and Artic Street.  It was one of three movable bridges planned by the City of Bridgeport in 1916 at the request of the War Department during World War I.  Construction was completed in 1919, but the delays surrounding the construction went to the Connecticut Supreme Court in case of "Edward DeV.  Tompkins, Inc. vs. City of Bridgeport, Connecticut".  The court ruled in favor of Tompkins and awarded damages equal to the contract.  In 1936, the bridge had excessive settling and required the replacement of its southeast pier.  As part of the repairs, a new floor and electrical system were installed.  In 1965, the floor was replaced with a steel grate on I-beam floor.  In 1984, the eastern approach span was replaced and the northwest trunnion post was reconstructed.  The bridge was closed in the 1990s and dismantled in 1999.

Queensboro Bridge: The Queensboro Bridge, also known as the 59th Street Bridge – because its Manhattan end is located between 59th and 60th Streets – and officially titled the Ed Koch Queensboro Bridge, is a cantilever bridge over the East River in New York City that was completed in 1909.  It connects the neighborhood of Long Island City in the borough of Queens with Manhattan, passing over Roosevelt Island.  It carries New York State Route 25 and is the westernmost of the four East River spans that carry a route number: NY 25 terminates at the west (Manhattan) side of the bridge, which once carried NY 24 and NY 25A as well.  The bridge is flanked on its northern side by the freestanding Roosevelt Island Tramway.  The bridge was, for a long time, simply called the Queensboro Bridge, but in March 2011, the bridge was officially renamed in honor of former New York City mayor Ed Koch.

Madison Street Bridge (Portland, Oregon): The Madison Street Bridge, or Madison Bridge, refers to two different bridges that spanned the Willamette River in Portland, Oregon, from 1891 to 1900 and from 1900 to 1909.  The bridges connected Madison Street, on the river's west bank, and Hawthorne Avenue, on the east bank, on approximately the same alignment as the existing Hawthorne Bridge.  The original and later bridges are sometimes referred to as Madison Street Bridge No. 1 and Madison Street Bridge No. 2, respectively.  The second bridge, built in 1900, has alternatively been referred to as the "rebuilt" Madison Street Bridge (of 1891), rather than as a new bridge, because it was rebuilt on the same piers. Both were swing bridges, whereas their successor, the Hawthorne Bridge, is a vertical-lift-type.

Grand Street Bridge: The Grand Street Bridge is a swing bridge between the New York City boroughs of Brooklyn and Queens.  The bridge crosses Newtown Creek, and opened in December 1902.

Market Street Bridge (Clearfield, Pennsylvania): Market Street Bridge (Clearfield, PA) is a bridge in the borough of Clearfield, Pennsylvania.  It connects East Market Street and West Market Street.  The bridge crosses over the West Branch Susquehanna River, and is one of two bridges that crosses over the river in the town.

East River Park: East River Park, part of the New York City Department of Parks and Recreation, is 57.5 acre public park located on the Lower East Side of Manhattan.  The park stretches along the East River from Montgomery Street up to 12th Street on the east side of the FDR Drive.  The southern entrance boasts good views of the Manhattan Bridge and Brooklyn Bridge.  The amphitheater, built in 1941 just south of Grand Street, has been reconstructed and is often used for public performances.  The park includes football, baseball and soccer fields, tennis, basketball and handball courts, a running track and bike paths including the East River Greenway.  Fishing is another popular activity.  The park is bisected by the Williamsburg Bridge.

Newtown Creek: Newtown Creek, a 3.5 mi long tributary of the East River, is an estuary that forms part of the border between the boroughs of Brooklyn and Queens, in New York City.  Channelization made it one of the most heavily used bodies of water in the Port of New York and New Jersey and thus one of the most polluted industrial sites in the US, containing years of discarded toxins, an estimated 30000000 USgal of spilled oil, including the Greenpoint oil spill, raw sewage from New York City’s sewer system, and other accumulation from a total of 1,491 sites.

Supporting paragraphs: Grand Street Bridge Newtown Creek
Answer: 3.5 mi