Jasper County Democrat, Volume 9, Number 16, Rensselaer, Jasper County, 21 July 1906 — A GREAT CANTALEVER BRIDGE. [ARTICLE]

A GREAT CANTALEVER BRIDGE.

A cantalever bridge under construction acrossed the St. Lawrence at Quebec will contain a longer epan than any bridge yet erected. The bridge consists of two approach spans of 210 feet each, two spans, each 500 feet in length and a great central span 1.800 feet in length. The total length of the bridge is 4,220 feet, and although in extreme dimensions it does not compare with the Firth and Forth Bridge, which is about one mile in total length, it having the longest span in the world by ninety feet, the two cantalevers of the Forth Bridge being each 1,710 feet in length. The total width of the floor is 80 feet, and provision is made for the double track railway, two roadways for vehicles and two sidewalks. In a cantalever of this magnitude the individual members are necessarilyof huge proportions; the main posts, for instance, being 325 feet in length and weighing 750 tons. —Mishawaka Enterprise.