Manhattan Bridge

The Manhattan Bridge is a suspension bridge that crosses the East River in New York City, connecting Lower Manhattan at Canal Street with Downtown Brooklyn at the Flatbush Avenue Extension. The main span is 1,480 ft (451 m) long, with the suspension cables being 3,224 ft (983 m) long. The bridge's total length is 6,855 ft (2,089 m). It is one of four toll-free vehicular bridges connecting Manhattan Island to Long Island; the nearby Brooklyn Bridge is just slightly further downtown, while the Queensboro and Williamsburg bridges are to the north.

Manhattan Bridge
Seen from Brooklyn in July 2017
Coordinates40.7070°N 73.9905°W / 40.7070; -73.9905 (Manhattan Bridge)
Carries7 lanes of roadway,
4 tracks of the ​​​ trains of the New York City Subway, and bicycles
CrossesEast River
LocaleNew York City (Manhattan-Brooklyn)
Maintained byNew York City Department of Transportation
ID number2240028 (upper)
2240027 (lower)[1]
Characteristics
DesignSuspension bridge
Total length6,855 ft (2,089 m)
Width120 feet (37 m)[2]
Height336 ft (102 m) (towers)[2]
Longest span1,480 feet (451 m)[3]
Clearance below135 ft (41.1 m)[2]
History
DesignerLeon Solomon Moisseiff[2]
Constructed byOthniel Foster Nichols[2]
Construction start1901[2]
Construction end1909[4]
OpenedDecember 31, 1909 (1909-12-31)[4]
Statistics
Daily traffic85,084 (2016)[5]
TollFree both ways
Location within New York City

The bridge was designed by Leon Moisseiff,[2] built by The Phoenix Bridge Company, and opened to traffic on December 31, 1909. An innovative design, it was the first suspension bridge to employ Josef Melan's deflection theory for deck stiffening, resulting in the first use of a lightly-webbed weight-saving Warren truss[6] for its construction. Considered the forerunner of modern suspension bridges, it served as the model for many of the record-breaking spans built in the first half of the twentieth century.

History

Name

The bridge was the last of the three suspension spans built across the lower East River, following the Brooklyn and Williamsburg Bridges. In the earliest plans it was to have been called "Bridge No. 3", but was given the name Manhattan Bridge in 1902.[7] When the name was confirmed in 1904, The New York Times criticized it as "meaningless", lobbied for one after Brooklyn's Wallabout Bay, and railed that the span "would have geographical and historical significance if it were known as the Wallabout Bridge".[8] In 1905, the Times renewed its campaign, stating, "All bridges across the East River are Manhattan bridges. When there was only one, it was well enough to call it the Brooklyn Bridge, or the East River Bridge".[9]

Construction

Construction on the foundations for the bridge's towers had commenced by at least 1901.[10] By 1903, three workers had died while working on the Brooklyn-side tower's caisson.[11] A $10 million grant for the bridge's construction was granted in May 1904 with the expectation that work on the span would start later that year.[12]

A plan for the suspension-bridge span was announced in 1903. Elevated and trolley routes would use the Manhattan Bridge, and there would be large balconies and enormous spaces within the towers' anchorages.[13] However, the Municipal Art Commission raised objections to one of the bridge's plans, which delayed the start of construction for the span.[14] Another set of plans was unveiled in June 1904 by New York City Bridge Commissioner Gustav Lindenthal,[15] but the second plan was also rejected.[16] The dispute revolved around whether eyebars or wire cables should be used in the new bridge.[17] The MAC voted to use wire cables in the bridge in September 1904.[18] Because of this dispute, the plans for Manhattan Bridge are sometimes mistakenly attributed to Lindenthal.[19] Other delays arose over the proposed placement of the bridge's termini on either side.[20]

The Manhattan Bridge under construction in March 1909

The first temporary wire between the Manhattan Bridge's two towers was strung in June 1908. It was to be replaced later with two sets of permanent, thicker main cables, each 21 inches (53 cm) thick, in pairs on both sides of the bridge's deck. By this time, the construction cost had increased to $22 million.[21] During the stringing of the anchorages, one of the cables on the Brooklyn side broke loose, injuring two people.[22][23] The last of the suspender ropes supporting the main cables was strung in December of that year. The cables had been strung in four months,[24] The construction of the bridge span required 30,000 tons of steel.[25] Erection of the superstructure and steel fabrication were contracted to The Phoenix Bridge Company.[26][27] The first girder for the new bridge was installed in February 1909.[28] By April, the majority of the span had been fitted into place between the main cables.[29]

The New York City Rapid Transit Commission recommended the construction of a subway line across the Manhattan Bridge in 1905.[30] This line was approved in 1907.[31] The New York City Public Service Commission requested permission to start constructing the subway tracks in March 1908.[32] This plan was approved in May.[33]

Opening and early history

A group of 100 "leading citizens of Brooklyn" walked over the bridge on December 5, 1909, marking the unofficial completion of the bridge.[34] The bridge was officially opened by outgoing Mayor George B. McClellan Jr. on December 31, 1909.[4] Shortly after opening, a fire on the Brooklyn side of the Manhattan Bridge damaged the structure.[35]

The Manhattan Bridge's design was controversial at the time of its construction and opening. In comparison to the Brooklyn Bridge, the Williamsburg and Manhattan Bridges had been seen as aesthetically unappealing. In 1910, the year after the bridge opened, the architectural firm Carrère and Hastings drew up preliminary plans for an elaborate Greek Revival grand entry to the bridge on the Manhattan side, as part of the "City Beautiful" movement (see § Arch and colonnade), as well as a smaller approach on the Brooklyn side. These approaches would hide the bridge.[36]:1 Construction began that year, and plans were finalized in 1912. A plot of 400 by 750 feet (120 by 230 m), bounded by the Bowery, Canal, Forsyth, and Bayard Streets, was cleared for the arch and colonnade's construction.[37] The arch and colonnade were completed in 1915.[38] Daniel Chester French designed two 12-foot-high (3.7 m), 20-short-ton (18-long-ton; 18 t) pylons named "Brooklyn" and "Manhattan" on the Brooklyn side of the Manhattan Bridge, which were installed in November 1916.[36]:1[39]

View down Pike Street toward the Manhattan Bridge, 1936, photograph by Berenice Abbott

An upper-deck roadway on the bridge was installed in 1922.[40]

Floodlights and barbed-wire fences were installed at the bases of the bridge's anchorages in 1951, during the Cold War. The installations were fortified to protect against "possible sabotage attempts under wartime conditions". The anchorages themselves were sealed.[23][41] The pylons on the Brooklyn side were removed in 1963 to accommodate a widened roadway, and moved to the Brooklyn Museum.[39]

Reconstruction

The subway trains crossing the Manhattan Bridge had a major impact on its condition (see § Trackage history), and the bridge started to tilt to one side based on how many trains used that side. This had supposedly been a problem since the tracks opened in 1917.[23][42] In 1956, the bridge was renovated in order to rectify this tilt.[43] However, by 1978, the Manhattan Bridge had deteriorated to such a point that the United States Congress voted to allocate money to repair the bridge, as well as several others in New York City.[44] Minor repair work started in 1982.[45] A discretionary grant for $50 million was allocated to these bridges' repairs in 1985.[46] The first phase of repairs started that year.[47] The bridge's condition was blamed on the imbalance in the number of trains crossing the bridge, as well as deferred maintenance during the New York City fiscal crisis of the 1970s.[42]

In April 1986, workers temporarily closed the Manhattan-bound roadway on the upper level in order to repair the deck there.[48] The north-side subway tracks, underneath the Manhattan-bound roadway, were also closed during this time.[49] In December 1987, inspectors also shut one lane of the lower level due to a crack in the deck.[50] The New York City Department of Transportation published a list of 17 structurally deficient bridges in the city. Among them was the Manhattan Bridge, which needed $166 million in repairs to fix "cable anchors and torsion of steel members as subways cross".[51] Repairs on the northern side of the Manhattan Bridge were complete by the end of 1988,[47] and the subway tracks on the north side were reopened. Simultaneous with the reopening of the north side, the south-side tracks were closed.[52] In 1991, trucks were banned from the lower level because they were too heavy for the decaying bridge.[53]

"Major" repair work on the southern side began in 1992.[47] The Yonkers Construction Company was awarded a $97.8 million contract for the repair project in August 1992.[54] City Comptroller Elizabeth Holtzman originally denied the contract to the company because of concerns about corruption,[55] but she was overridden by Mayor David Dinkins, who wanted to complete repairs quickly.[54] At the same time, the NYCDOT increased the frequency of maintenance inspections for the bridge, after inspectors found holes in beams that had been deemed structurally sound during previous inspections.[56] The Brooklyn-bound roadway on the upper level was closed from 1993 to 1996 so that side of the bridge could be repaired.[57] The bridge repairs were repeatedly delayed as the renovation process uncovered more serious structural problems underlying the bridge. The original plans had been to complete the renovations by 1995 for $150 million, but by 1996, the renovation was slated to be complete in 2003 at a cost of $452 million.[45] By 2001, it was estimated that the total cost of the renovations had reached half a billion dollars, including $260 million for the south side and another $175 million for the north side. At the time, the NYCDOT had set a January 2004 deadline for the renovation.[58]

The arch and colonnade had also become deteriorated, having become covered with graffiti and dirt. The enclosed plaza within the colonnade had been used as a parking lot by the New York City Police Department, while the only remaining portion of the large park surrounding the arch and colonnade, at Canal and Forsyth Streets, had accumulated trees. The arch and colonnade themselves had open joints in the stonework, as well as weeds, bushes, and small trees growing at their top.[37] The arch and colonnade were restored starting in the late 1990s, with the restoration being completed in April 2001 for $11 million. The project entailed cleaning the structures and installing 258 floodlights.[59]

21st century

The original pedestrian walkway on the south side of the bridge was reopened after forty years in June 2001.[60] It was shared with bicycles until late summer 2004, when a dedicated bicycle path was opened on the north side of the bridge. The northern bridge bike path is notable for poor signage that leads to cyclist and pedestrian conflicts.[61] By the time work on the bridge was completed in 2004, the final cost of the renovation totaled $800 million.[23]

To celebrate the bridge's centennial anniversary, a series of events and exhibits were organized by the New York City Bridge Centennial Commission in October 2009. These included a ceremonial parade across the Manhattan Bridge on the morning of October 4 and a fireworks display in the evening.[62] In 2009, the bridge was designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers.[6]

Description

The bridge has four vehicle lanes on the upper level, split between two roadways carrying opposite directions of traffic. The lower level has three vehicle lanes, formerly reversible depending on time of day, but now carrying exclusively Manhattan-bound traffic; four subway tracks, two under each of the upper roadways; a walkway on the west; and a bikeway on the east. The bridge once carried New York State Route 27 and later was planned to carry Interstate 478.[63] The main span is 1,480 feet (450 m) long.[3] Carrère and Hastings designed approach plazas on both ends of the bridge.[36]:1 The bridge was the subject of American artist Edward Hopper's painting Manhattan Bridge Loop.[64]

Arch and colonnade
The Greek Revival triumphal arch and colonnade at the Manhattan entrance
The Brooklyn Plaza of the bridge c.1917. Nassau Street is across the foreground. The Brooklyn Bridge is visible in the left background, and the Williamsburg Bridge in the right background.

The arch and colonnade on the Manhattan end of the bridge were completed in 1915.[38] They surround an elliptical plaza facing north toward the Bowery. The arch was based on Paris's Porte Saint-Denis while the colonnade and enclosing plaza was modeled after the one surrounding St. Peter's Square in Vatican City.[36]:1[37] The design was chosen because the Manhattan Bridge continued as Flatbush Avenue on the Brooklyn side, which ran south to the Atlantic Ocean, and so the arch signified the Manhattan Bridge's role as an ocean "gateway". The plaza was influenced by the New York Improvement Plan of 1907, which sought to create plazas and other open spaces at large intersections; a massive circular plaza was ultimately supposed to connect the Brooklyn and Manhattan Bridges, but was never built.[36]:2

The Manhattan Bridge arch is one of the city's three remaining triumphal arches, the others being the Washington Square Arch and the Soldiers' and Sailors' Arch. Its opening measures 36 feet (11 m) high and 40 feet (12 m) wide.[36]:2 There are rosettes on the arch's soffit. The southern side of the arch, facing Brooklyn, is less decorated but has rusticated stone blocks indicative of a Parisian or Florentine bank.[37] The colonnade is elliptical and rises to 38 feet (12 m), supported by six pairs of 31-foot (9.4 m) Tuscan columns on either side, with each pair of columns flanking rusticated piers inside the colonnade. There is an entablature above the columns, as well as a cornice and balustrade at the top of the colonnade.[36]:3 The decoration includes groups of allegorical sculptures sculpted by Carl Augustus Heber and a frieze called "Buffalo Hunt" by Charles Cary Rumsey.[36]:2[37][38]

The arch and colonnade were initially bordered by granite retaining walls that contained decorative balustrades surrounding parkland on either side of the arch and colonnade. Only a small segment of parkland remains at Canal and Forsyth Streets, while the south side of the park became Confucius Plaza.[37] The arch and colonnade were described as a "complete, dignified and monumental ensemble, worthy of one of the principal gateways of a great modern city" in a New York Times article.[37] Part of the colonnade's eastern arm was removed and replaced in the 1970s for the construction of the incomplete Second Avenue Subway.[65][36]:3 The arch and colonnade were designated a New York City landmark on November 25, 1975.[66] After many years of neglect and several attempts by traffic engineers to remove the structure (including a proposal for the unbuilt Lower Manhattan Expressway that would have required removing the arch), the arch and colonnade were repaired and restored in 2000.[38][67]

Subway tracks

Four subway tracks are located on the lower deck of the bridge, two on each side of the roadway. The two tracks on the south side are used by the Q train at all times and the N train at all times except late nights, when they use the Montague Street Tunnel. The tracks on the north side are used by the D train at all times and the B train on weekdays. On the Manhattan side, the south side tracks connect to Canal Street and become the express tracks of the BMT Broadway Line, while the north side tracks connect to the Chrystie Street Connection through Grand Street and become the express tracks on the IND Sixth Avenue Line. On the Brooklyn side, the two pairs merge under Flatbush Avenue to a large junction with the BMT Fourth Avenue Line and BMT Brighton Line at DeKalb Avenue. For 18 years, between 1986 and 2004, one or the other set of tracks was closed to repair structural damage.[68]

Trackage history

When the bridge first opened, its tracks did not connect to any others. In 1910, the Manhattan Bridge Three Cent Line, a streetcar company, began operations on those tracks.[69] This was followed by the Brooklyn and North River Line in 1912.[70] The trolley arrangement continued until the BRT (later BMT), which also had two tracks each over the Brooklyn and Williamsburg Bridges, trackage was connected to the bridge in 1915.[71] The trolleys were moved to the upper-level roadways until 1929, when service was discontinued.[72]

The feeder lines for the Brooklyn side of the tracks have not changed since subway service began on the bridge. It has always been fed by tracks from the BMT Fourth Avenue Line and the BMT Brighton Line; however, the junction between the lines was reconstructed in 1956, and Myrtle Avenue subway station, just near the foot of the bridge, was closed.[73] On the Manhattan side, however, the two north tracks originally connected to the BMT Broadway Line (where the south tracks now connect) while the two south tracks curved south to join the BMT Nassau Street Line towards Chambers Street. This connection has been severed and the tracks are now used for storage.

On November 26, 1931, a connection south of Chambers Street to the Montague Street Tunnel opened, adding two stations (Fulton Streets and Broad) and rerouted train service on the bridge's south side. Service on that side became relatively low afterward as the only trains that normally crossed it were The Bankers’ Special, which ran from either the Sea Beach and/or Fourth Avenue Line, crossed the Manhattan Bridge or Montague Street Tunnel into Manhattan, and then returned to Brooklyn via the opposite crossing.

Since the tracks are on the outer part of the bridge, passing trains caused the structure to tilt and sway. The wobble worsened as train cars became longer and heavier. Eventually, when one train moved over the bridge one side would be three feet lower than the other side, severely damaging the structure. In 1956, a repair program was begun at a cost of $30 million. Trains still crossed the bridge, but many times one of the tracks had to be closed with both routes using a single-track, which further restricted the number and size of the trains crossing.[43]

Cross section illustrating the bridge's lane layout
A Manhattan-bound D train of R68 cars crosses the bridge on the north tracks

Concurrent with the building of the Chrystie Street Connection (opened November 26, 1967) to connect to the north tracks, the south tracks were rerouted to the BMT Broadway Line connection, and the connecting tracks to the BMT Nassau Street Line were severed. The connection, and its related projects, opened two new stations (Grand Street and, in July 1968, 57th Street–Sixth Avenue) and added express service on the IND Sixth Avenue Line. The IND's B and D trains were routed via the north side of the bridge, while the N and Q routes were moved to the south side of the bridge for service to Broadway. At the time, the B train continued to Brooklyn using the BMT West End Line, while the D and Q trains used the Brighton Line and the N used the BMT Sea Beach Line.[74]

Even after the 1956 repairs, the New York City Department of Transportation failed to maintain the bridge properly, and a major repair program began in the 1980s (see also § Later history). Changes to subway service patterns started in 1983.[75] Because of the large scope of these repairs, there was limited train access to the bridge, reducing the number of trains that could cross the span. The north tracks, which had been more heavily used, were closed first in April 1986. This split B and D service into two sections: trains from the Bronx and upper Manhattan terminated at 34th Street–Herald Square station, thus suspending express service on Sixth Avenue, while trains from Brooklyn were rerouted to the BMT Broadway Line express via the south side of the bridge. The N was rerouted via the Montague Street Tunnel.[49]

The north tracks were reopened and the south tracks were closed simultaneously in December 1988, merging the B and D services, rerouting the Q train to Sixth Avenue in Manhattan. Broadway Line express service was suspended while Sixth Avenue express service was restored.[52] After an 18-month delay for procuring contracts, the New York City Transit Authority and politicians pressured the DOT to resume N train service on the bridge's south side on September 30, 1990, despite warnings from engineers that the structure was unsafe and major repairs still had to be made.[76][77] On December 27, state inspectors forced south side service to be rerouted via the tunnel again after discovery of corroded support beams and missing steel plates.[76] The city's deputy commissioner for bridges and his administrative assistant were fired after this incident. Following the controversial decision to do so, the New York City Council's Transportation committee held an inquiry into the decision to restore subway service on the Manhattan Bridge's south side, as well as an inquiry into the safety of all New York City bridges.[77][78][79][80] They found that the Transportation Department and Transit Authority's lack of cooperative inspection were a major contributor for the deteriorating conditions.[81][82][83]

A projection for a reopening date was initially made for 1995.[84] That year, the north side was closed during off-peak hours for six months, rerouting the Q to Broadway and cutting D service from Brooklyn and B service from Manhattan. The south side finally reopened on July 22, 2001, whereby the north side was again closed, returning the Q to the express tracks on the Broadway Line; introducing the new W train to run on the West End Line; and cutting B and D service from Brooklyn. The south side was closed on weekends from April to November 2003, and the Q was rerouted via the Montague Street Tunnel.[85] On February 22, 2004, the north side reopened, and all four tracks were in service simultaneously for the first time in 18 years. B and D trains returned to Brooklyn, but switched routes in that borough (the B on the Brighton Line and D on the Fourth Avenue and West End Lines). Additionally, daytime N trains once again used the bridge for travel and the W train service in Brooklyn was discontinued .[86][87][88]

Between August 2, 2013, and September 14, 2014, weekend R trains and late-night N trains also used the south tracks due to the Montague Street Tunnel being closed for Hurricane Sandy-related repairs.[89]

Tracks used

Exits and entrances

Access to the Manhattan Bridge is provided by a series of ramps on both the Manhattan and Brooklyn sides of the river.

BoroughLocationmi[90]kmDestinationsNotes
BrooklynBrooklyn Heights0.00.0Flatbush Avenue ExtensionContinuation south
0.10.16Nassau StreetNorthbound upper level entrance and southbound upper level exit
0.20.32 I-278 (Brooklyn–Queens Expressway) – Triboro Bridge, Staten IslandNorthbound upper level entrance only
0.20.32Jay Street to I-278 (Brooklyn–Queens Expressway) – Triboro Bridge, Staten IslandSouthbound upper level exit only
East River0.4–
1.0		0.64–
1.6		Suspension span
ManhattanChinatown1.32.1BowerySlip ramp from northbound Bowery to northbound upper level
1.42.3Bowery and Canal Street to FDR Drive / Holland TunnelNorthbound lower level exit and southbound upper level entrance; at-grade intersection
Chrystie Street to FDR Drive / Holland Tunnel / Canal Street westContinuation of northbound upper level
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Proposed I-478 designation

As part of the construction of the Lower Manhattan Expressway, there were plans to make the Manhattan Bridge I-178, but since this interstate would have led to a crosstown expressway and the existing Brooklyn-Queens Expressway, the FHWA stated that the first digit should be even, so the designation I-478 was chosen.[91] However, with the cancellation of I-78 through New York City, the spur neither qualified to be part of the Interstate Highway System nor connected to any existing highways (though ramps directly from I-278 (Brooklyn-Queens Expressway) are accessible on the Brooklyn side).

The full span, with the Brooklyn Bridge in the foreground
  • View from Washington Street, Brooklyn
  • Cross section of the bridge
  • Manhattan-bound lower level
  • One of the pedestrian walkways
  • Manhattan bikeway
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gollark: Mail slightly asymmetrical foxes to the twemoji people in real life.
gollark: Highlight all the asymmetry.
gollark: https://media.discordapp.net/attachments/411573884597436416/778392005357076519/unknown.png?width=421&height=422
gollark: Have you genetically engineered symmetrical foxes yet?

See also
  •  Transport portal
  •  Engineering portal
  •  New York (state) portal
  •  New York City portal
  • National Register of Historic Places listings in Kings County, New York
  • National Register of Historic Places listings in New York County, New York

References
  1. http://www.nyc.gov/html/dot/downloads/pdf/dot_bridgereport15.pdf
  2. Manhattan Bridge at Structurae
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  28. "Engineers Assured Lock Plan Will Fail – H.G. Granger Attacks President's Board and the Report in Favor of Lock Canal – Schwab Wants a Sea Level – Tells Institute of Mining Engineers the Lock Type Is Inferior, and Business World Wants the Best" (PDF). The New York Times. February 25, 1909. ISSN 0362-4331. Retrieved December 24, 2017.
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  33. "Now Ready to Build Tri-Borough Subway – Bradley-Gaffney-Steers Syndicate Incorporates to Join Brooklyn and Bronx – Canal Street Link First – Thence to Flatbush Over Manhattan Bridge - Broadway and Lexington Avenue Line to Come Later" (PDF). The New York Times. May 1, 1909. ISSN 0362-4331. Retrieved December 24, 2017.
  34. "One Hundred Cross Manhattan Bridge – Brooklyn Inspection Party Walks Over the New Twenty-Million-Dollar Link – A Remarkable Structure – Official Opening Set for Three Weeks Hence – Interesting Facts About Its Building" (PDF). The New York Times. December 5, 1909. ISSN 0362-4331. Retrieved December 24, 2017.
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