…Type Significance(s) Interpretation Sign Current Designation(s) Type Significance(s) Interpretation Sign Current Designation(s) HIGH BRIDGE GATEHOUSE (WEST) 1837-1848 Plate 29, New Croton Aqueduct HIGH BRIDGE STORE Plate 29, Old Croton Aqueduct The western gatehouse at High…

…The grade line of the aqueduct supplying water to Marseilles was 270 feet above the valley floor and of comparable length to High Bridge. The Croton High Bridge is without peer in antebellum America and is the centerpiece of the…

Harlem River more navigable for larger ships 1929 1930 Hoover Dam construction begins 1933 Golden Gate Bridge construction begins 1931 1936 1939-45 World War II High Bridge designated a NYC Landmark 1970 High Bridge Aqueduct & Tower placed on National…

BRIDGE ENGINEER’S Office c 1840s (Demolished) Plate 29, Old Croton Aqueduct Interpretation Sign Type Significance(s) Interpretation Sign Current Designation(s) 17 HIGH BRIDGE TOWER 1872 Plate 29, Old Croton Aqueduct Type Rising 185 feet on a bluff in…

…ships 1929 1930 Hoover Dam construction begins 1933 Golden Gate Bridge construction begins 1931 1936 1939-45 World War II High Bridge designated a NYC Landmark 1970 High Bridge Aqueduct & Tower placed on National Register of Historic Places 1972 1972…

…With the completion of High Bridge in 1848, artists and the public alike got an extraordinary arcadian view of the Aqueduct. As early as 1843, Tower had noted that High Bridge "... will be the most interest- ing work on the…

…Aqueduct trail and attractions along the way. An ongoing project is the restoration and adaptive reuse of the keeper’s house in Dobbs Ferry into a visitors center, and the Friends also play an active role in the High Bridge…

…The water in the large aqueduct of masonry would, with much more uncer- tainty, be protected from frost on the high bridge, from the greatly elevated exposure and difficulty in surrounding it with a sufficient quantity of earth, than when…

…This exposure and the painting's subsequent issuance as an etching probably made High Bridge from Harlem Lane the best known Aqueduct painting of this later period. Artists, writers, and the general public also associated the Croton water system with…

…Alien: "The object is, I believe, to make the men feel the want of work ..." Jervis Pubiic Library, Rome, NY High Bridge During Construction of the Large Main, Viewed from the West Gate House, fooking East, 1861 [2 versions]; High…

…Gimber Reproduction, courtesy of The Historical Society of the Tarrytowns Checklist Evelyn Fitzgerald, Detail, Croton Aqueduct Ventilator Inscription Reproduction from contemporary slide Collection, Dobbs Ferty Historical Society, Dobbs Ferry, NY Possibly by John B. Jervis, Aqueduct Bridge at Sing Sing…

…In addition to the High Bridge, other key structures along the aqueduct that took shape during these years included the Croton Dam (an initial version of which ruptured in 1841, unleashing a lethal flood), the Sing Sing Kill Bridge, the…

…Viewed from the Westchester Side of the Harlem River, 1861; Sing Sing Bridge, Croton Aqueduct, Showing the Road Bridge Underneath It, 1863 From Photographic Views of the High Bridge and the Gate Houses of the New Reservoir (belonged to third…

…An Aqueduct Bridge built of stone, having arches resting upon piers and abutments, was proposed so as to continue the Aqueduct across with its regular inclination. An Inverted Syphon of iron pipes was proposed ; the pipes to descend to a…

…of economy induced them to build the work only high enough to comply with the requirements of the law. The plan which has been adopted for building an Aqueduct bridge across this valley is as follows : on the south shore…

…The middle arches which are over the river de la Morgia, are about 328 feet high. On the top of this bridge is the Aqueduct which carries the water to Spoleto. This structure was difficult to execute, and being built…

…Significance(s) Sign Current Designation(s) COAL INCLINE AND RAILROAD, HIGH SERVICE WORKS - HIGH BRIDGE 1873 (Demolished) Plate 29, Old Croton Aqueduct Supporting the High Service Works located at the end of High Bridge, the dock and incline were built…

…Bennett's watercolor Fishermen at High Bridge (1844, The New York Public Library) and John William Hill's watercolor of High Bridge (figure 48), exhibited at the American Art-Union in 1848,^'' reveal their continued interest in the Aqueduct as…

…The water in the large aqueduct of masonry would, with much more uncer- tainty, be protected from frost on the high bridge, from the greatly elevated exposure and difficulty in surrounding it with a sufficient quantity

…This would not carry the work up to the level of the Aqueduct, and would render it necessary to connect the Aqueduct on each side of the valley by iron pipes which would descend to the level of the bridge…

…The arches of the bridge, originally designed to maintain the grade of the aqueduct, were elevated 112 feet above the high water mark of the river, which is 12 feet higher than the Act requires. It is obvious, therefore, that…

…By constructing a temporary low-level bridge, it was possible to lay Iron pipes across the Harlem River Valley allowing the Aqueduct to be opened before the completion of the High Bridge. On July 4, 1842, the first water was…

the system, including the 1927 adaptation to the High Bridge, the complete removal of the receiving reservoir in Bryant Park, the paving of walkways atop the aqueduct berm, and current plans to add eight-foot-high fencing to the High…

…In a report to the Water Commissioners dated February 8, 1837, the chief engineer cited both the High Falls Aqueduct on the Delaware and Hudson Canal and the Little Falls Aqueduct on the Erie Canal as examples of masonry watenway…

Law Olmsted and Calvert Vaux, Central Park embraced the Old Croton Aqueduct in design. Significance(s) Sign Current Designation(s) COAL INCLINE AND RAILROAD, HIGH SERVICE WORKS - HIGH BRIDGE 1873 (Demolished) Plate 29, Old Croton Aqueduct Supporting the High Service…

…Martineau felt the use of inverted siphons would elimi- nate the need for the high bridge to keep a uniform grade level for the aqueduct. Douglass, in recommending the more expensive open aqueduct bridge was following the advice of Colonel…

…that would become too high, and yet where a bridge was necessary, they built bridges of a height sufficient to carry the water over in syphons of easy curvature. The sources of supply of the aqueduct of Mont de Pile…

…Tower, Croton Aqueduct at Haarlem River (High Bridge), c.1842 Ink with watercolor wash on paper; 4 V2 x 9 V2 inches Mrs. Helen Tower Wilson William James Bennett (1789-1844), Fishermen at High Bridge, 1844 Watercolor on paper; 12V4X…

…AMAWALK FOUNTAIN 1897 Plate 9-, New Croton Aqueduct Type Significance(s) Interpretation Sign ARDSLEY OPEN-CUT c 1888s Plate 24-11, New Croton Aqueduct A single arched granite bridge stretching 160 feet, the Archville Bridge carried the Croton Aqueduct across…

…To make the capacity of the pipes for conveying water equal to that of the aqueduct, an extra fall of two feet has been given across the bridge, and the aqueduct on the southern side of the river is constructed…