St. Catharines in Niagara Region, Ontario — Central Canada
Vertical Lift Bridges
This sheave (a grooved wheel that forms part of a pulley) was removed in January 1998 from Bridge 10 in Thorold. It is he same size as the sheaves on Bridge No, 5 at Glendale Avenue, visible to the south of Lock 3.
How it works. The operator and motors to move the span are located in the enclosure at the centre of the bridge. The span is connected by wire ropes to counterweights hanging inside the towers. Two small motors eaisly raise and lower the bridge as the sheaves at the top of each tower rotate in order to balance the counterweights.
Facts and Figures. Bridge No. 5 Glendale Avenue. diameter of sheave 4.04 m (13 ft. 3 in.) weight of sheave 10.9 tonnes (12.2 tons) wire ropes 16 per sheave diameter of wire ropes 41.3 mm (1 5/8 in.) length of moveable span 63.6 m (208 ft. 8 in.) vertical clearance 36.6 m (120 ft.) weight of moveable span 1107 tonnes (1240 tons) weight of counter balance 1107 tonnes (1240 tons) height of towers 53 m (174 ft.) electric motors two 135 hp - total equal to a 6 cylinder car engine
6 August 1999.
This sheave, donated to the St. Catharines Museum by The St. Lawrence Seaway
Cette poulie, donnée au Musée de St. Catharines par la Corporation de Gestion de la Voie Maritime du Saint-Laurent commémore le 170e anniversaire du premier canal Welland et le 40e anniversaire de l'ouverture de la Voie maritime du Saint-Laurent.
No. 10 Bridge constructed in 1928 for Canadian National Railway.
Regular maintenance is essential to keep all components of the Seaway in working order.
Caution! climbing on the artifacts can be hazardous.
Location. 43° 9.307′ N, 79° 11.639′ W. Marker is in St. Catharines, Ontario, in Niagara Region. Marker can be reached from Welland Canals Parkway. Touch for map. Marker is on the grounds of the St. Catharines Museum and Welland Canals Centre between the museum building and the canal. Marker is at or near this postal address: 1932 Welland Canals Parkway, St. Catharines, Ontario L2R7K6, Canada.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Bollards & Fairleads (a few steps from this marker); Shipbuilding in Niagara (within shouting distance of this marker); Early Welland Canals (within shouting distance Horse Drawn Grape Hoe (within shouting distance of this marker); Spring Tooth Cultivator (within shouting distance of this marker); International Shipmasters' Association (within shouting distance of this marker); The Welland Canals and the St. Lawrence Seaway System (within shouting distance of this marker); Welland Ship Canal (within shouting distance of this marker). Touch for a list and map of all markers in St. Catharines.
Also see . . . St. Catharines Museum & Welland Canal Centre. (Submitted on August 16, 2014, by Anton Schwarzmueller of Wilson, New York.)
Additional keywords. Welland Canal St. Lawrence Seaway
Categories. • Bridges & Viaducts • Waterways & Vessels •
Credits. This page was last revised on June 16, 2016. This page originally submitted on August 16, 2014, by Anton Schwarzmueller of Wilson, New York. This page has been viewed 261 times since then and 8 times this year. Photos: 1, 2, 3, 4, 5. submitted on August 16, 2014, by Anton Schwarzmueller of Wilson, New York. • Bill Pfingsten was the editor who published this page.