Significance(s) Interpretation Sign DOBBS FERRY BARN c 1880s Plate 24-2, Old Croton Aqueduct A maintenance building for the use of the principal superintendent of the aqueduct north of New York City. Type Significance(s) Interpretation Sign Current Designation(s) DOBBS FERRY KEEPER’S HOUSE 1857 Plate 24-3, Old Croton Aqueduct Italianate in form, the two story masonry structure provided a home for the principal superintendent of the aqueduct north of New York City. For more information, see fiche on page XXX. 14 Current Designation(s) DOBBS FERRY TOOL SHED (Demolished) Plate 24-5, Old Croton Aqueduct The tool shed was a miscellaneous maintenance building located on the aqueduct embankment. Type Significance(s) Current Designation(s) Interpretation Sign EAST BRANCH RESERVOIR 1888-1892 Plate 6-, New Croton Aqueduct Part of the complex allotted to the overseer of the East Branch Reservoir. The East Branch Reservoir is formed by the Sodom and Bog Brook Reservoirs, which are connected by a 1,778 foot long tunnel. Type Significance(s) Interpretation Sign Significance(s) Interpretation Sign Current Designation(s) Current Designation(s) EAST BRANCH GATEHOUSE 1888-1892 Plate 5-, New Croton Aqueduct The flow of water between Sodom Reservoir and Bog Brook Reservoir is controlled by a gatehouse located near Bog Brook Dam Number 1. The superstructure measures 23 X 27 feet and is built of granite masonry. Significance(s) Current Designation(s) Interpretation Sign GOULD’S SWAMP SIPHON c 1888 Plate 23-7, New Croton Aqueduct Structure Guide Type Type Appendix EAST BRANCH FOREMAN BARN 188-1892 Plate 5-, New Croton Aqueduct At Gould’s Swamp, the soil was found to be insufficient, so between Shaft No 11A and 11B, the New Croton Aqueduct was built under the bedrock forming an inverted siphon. Type Significance(s) Interpretation Sign Current Designation(s) 15 HARLEM RIVER SIPHON 1886-1888 Plate 29, New Croton Aqueduct The composition of rock under the Harlem River necessitated the tunnel to be placed 307 feet under the river bed. Here, the size of the tunnel was reduced to 10 ft. 6 in., and the water is under great pressure. Type Significance(s) Interpretation Sign HIGH BRIDGE 1837-1848 (Altered 1927) Plate 29, Old Croton Aqueduct Serving as the Harlem River crossing for the Old Croton Aqueduct, the monumental pedestrian bridge with stunning views of the landscape was a popular tourist destination. For more information, see fiche on page XXX. Type Significance(s) Interpretation Sign Current Designation(s) Current Designation(s) HARLEM RIVER SPEEDWAY 1894-1898 (Demolished 1940s and 1960s) Plate 31-2 Two miles in length and following the sinewy curves of the Harlem River, Calvert Vaux’s speedway served as a picturesque roadway for fast-trotting horses. Before the automobile gained favor, the Harlem River Speedway was a popular pleasure destination. For more information, see fiche on page XXX. Type Significance(s) Interpretation HIGH BRIDGE ENGINE HOUSE c 1870 (Demolished) Plate 29, Old Croton Aqueduct Part of the High Service Works at High Bridge, the stone engine house was comprised of two buildings: a boiler house with a tall smoke stack and a building containing the engines for pumping the water from the aqueduct to the High Service Reservoir and High Bridge Tower. Sign Type Significance(s) Current Designation(s) Current Designation(s) 16 Interpretation Sign HIGH BRIDGE KEEPER’S HOUSE (Demolished) Plate 29, New Croton Aqueduct A stone office for the engineer of the Old Croton Aqueduct. A building constructed for the overseer of the High Bridge section of the aqueduct. Significance(s) Interpretation Sign Current Designation(s) Type Significance(s) Interpretation Sign Current Designation(s) HIGH BRIDGE GATEHOUSE (EAST) 1837-1848 Plate 29, Old Croton Aqueduct HIGH BRIDGE STEPS 1891 Plate 29 Regulating the inflow of the aqueduct, the stone gatehouse stands sentry at the eastern entrance to High Bridge. In addition, it is outfitted with a waste weir. A series of short flights of bluestone steps broken by generous gneiss landings linked the entrance to High Bridge, at the top of the hill, to the road and wharf on the river below. 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 Bridge discharges water to Manhattan Island. Part of the complex allotted to the overseer of the High Bridge section of the aqueduct. Type Significance(s) Current Designation(s) Structure Guide Type Appendix HIGH 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 Highbridge Park, High Bridge Tower contained a water tank for high-storied buildings in Washington Heights. For more information, see fiche on page XXX. Type Significance(s) Interpretation Sign Part of the High Service Works at High Bridge serving the area of Manhattan above 135th Street, the earthen embanked reservoir also contained a promenade at the top with view of High Bridge and the Harlem