is not as tall and that the polygonal faces have been rounded off. Type Significance(s) Current Designation(s) Interpretation Sign Type Type Significance(s) Interpretation Sign Interpretation Sign Current Designation(s) SAW MILL RIVER BRIDGE 1838-1839 Plate 27-2, Old Croton Aqueduct The stone arch spanned 16 feet across a road at Saw Mill River. Type Current Designation(s) RESERVOIR PARK 1871 (Renamed Bryant Park 1884) Plate 32-12 Significance(s) Interpretation Sign Current Designation(s) Reservoir Park occupied the land made vacant by the burning of Crystal Palace. Originally formal in design, the park was redesigned on several occasions. As part of a WPA initiative, Bryant Park, as it was renamed in 1884, was redesigned in a faux Victorian style. Type Significance(s) Structure Guide Designed to accommodate the pre-existing transportation route of Harvey’s Marble Quarry, the stone arch of the Quarry Railroad Bridge spanned sixteen feet over the railroad tracks below. Significance(s) Appendix QUARRY RAILROAD BRIDGE 1838-1839 Plate 24-7, Old Croton Aqueduct Interpretation Sign SAW MILL RIVER CULVERT 1838-1839 Plate 27-1, Old Croton Aqueduct The design was chosen for its engineering efficiency, as two smaller arches sharing a common footing was less expensive to build than a single, larger arch. Each culvert spanned 25 feet within the 90 foot long embankment. For more information, see fiche on page XXX. Current Designation(s) RIDER’S BROOK CULVERT c 1840 Plate 22-1, Old Croton Aqueduct Type Significance(s) Interpretation Sign Current Designation(s) The culvert resides 34 feet beneath the conduit of the Old Croton Aqueduct. The embankment is 100 feet long. 31 SHAFT NUMBER 0 Plate 13-, New Croton Aqueduct SHAFT NUMBER 2 Plate 19-3, New Croton Aqueduct Shaft Number 0 was dug at an incline on a grade of 12 feet per 100 feet. Shaft Number 2 was designed at a depth of 343 feet. Type Significance(s) Interpretation Sign Current Designation(s) Interpretation Sign SHAFT NUMBER 2 HEADHOUSE (Status Unknown) Plate 19-4, New Croton Aqueduct Engineers designed Shaft Number 1 to be sunk to a depth of 343 feet. Significance(s) Significance(s) Current Designation(s) SHAFT NUMBER 1 Plate 19-1, New Croton Aqueduct Type Type Interpretation A headhouse was placed over Shaft Number 2. Sign Type Significance(s) Interpretation Sign Current Designation(s) Current Designation(s) SHAFT NUMBER 1 HEADHOUSE (Status Unknown) Plate 19-2, New Croton Aqueduct SHAFT NUMBER 3 Plate 19-5, New Croton Aqueduct A headhouse was placed over Shaft Number 1. Shaft Number 3 was engineered at a depth of 380 feet. Type Significance(s) Current Designation(s) 32 Interpretation Sign Type Significance(s) Current Designation(s) Interpretation Sign SHAFT NUMBER 6 Plate 21-3, New Croton Aqueduct Engineers designed Shaft Number 4 at a depth of 246 feet. Shaft Number 6 was designed to reach a depth of 173 feet. Type Significance(s) Interpretation Sign Sign SHAFT NUMBER 7 Plate 22-9, New Croton Aqueduct Also referred to as the Briarcliffe Farms Headhouse, the structure covered an unpressurized portion of the New Croton Aqueduct. Significance(s) Interpretation Current Designation(s) SHAFT NUMBER 4 HEADHOUSE (Status Unknown) Plate 21-2, New Croton Aqueduct Type Significance(s) Structure Guide Current Designation(s) Type Appendix SHAFT NUMBER 4 Plate 21-1, New Croton Aqueduct Interpretation Shaft Number 7 was engineered at a depth of 163 feet. Type Significance(s) Interpretation Sign Sign Current Designation(s) Current Designation(s) SHAFT NUMBER 8 Plate 22-10, New Croton Aqueduct SHAFT NUMBER 5 Plate 21-3, New Croton Aqueduct Shaft Number 7 was engineered at a depth of 109 feet. Type Significance(s) Interpretation Shaft Number 8 was cut at the Pocantico River. Type Significance(s) Interpretation Sign Sign Current Designation(s) Current Designation(s) 33 SHAFT NUMBER 8 HEADHOUSE (Status Unknown) Plate 22-11, New Croton Aqueduct SHAFT NUMBER 11A Plate 23-6, New Croton Aqueduct Also referred to as the North Tarrytown Headhouse, the structure covered an unpressurized portion of the New Croton Aqueduct. Shaft 11A, on the nouthern side of Gould’s Swamp Siphon, was engineered at a depth of 32 feet. Type Type Significance(s) Interpretation Significance(s) Interpretation Sign Sign Current Designation(s) Current Designation(s) SHAFT 11B Plate 23-8, New Croton Aqueduct SHAFT NUMBER 9 Plate 22-13, New Croton Aqueduct Shaft Number 9 was designed level with the aqueduct and paired with the Pocantico Gatehouse. Shaft 11B, on the southern side of Gould’s Swamp Siphon, was engineered at a depth of 36 feet. Type Type Significance(s) Interpretation Significance(s) Interpretation Sign Sign Current Designation(s) Current Designation(s) SHAFT NUMBER 11C Plate 23-9, New Croton Aqueduct SHAFT NUMBER 10 Plate 22-15, New Croton Aqueduct Engineers designed Shaft Number 10 to be sunk to a depth of 126 feet. Type Significance(s) Current Designation(s) 34 Interpretation Sign Shaft 11C was constructed with a 14 foot diameter so that pumping apparatus could be lowered down to the New Croton Aqueduct. Type Significance(s) Current Designation(s) Interpretation Sign SHAFT NUMBER 13 Plate 24-8, New Croton Aqueduct The headhouse at Shaft Number 11C was designed to contain appurtenances necessary for the emptying of the Gould’s Swamp Siphon. Shaft Number 13 was designed