hide Matching Documents

The documents where this entity occurs most often are shown below. Click on a document to open it.

Document Max. Freq Min. Freq
Harper's Encyclopedia of United States History (ed. Benson Lossing) 65 1 Browse Search
The Daily Dispatch: October 20, 1864., [Electronic resource] 4 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 2 0 Browse Search
Thomas Wentworth Higginson, Harvard Memorial Biographies 2 0 Browse Search
Southern Historical Society Papers, Volume 17. (ed. Reverend J. William Jones) 2 0 Browse Search
Thomas Wentworth Higginson, Henry Wadsworth Longfellow 2 0 Browse Search
View all matching documents...

Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Black Rock (New York, United States) or search for Black Rock (New York, United States) in all documents.

Your search returned 1 result in 1 document section:

Knight's Mechanical Encyclopedia (ed. Knight), T. (search)
iameter of 24 feet 8 inches at the top of the caisson, while each of the other piers has a width of 8 feet, and a length of 35 feet 4 inches at top of caisson, and a width of 7 feet 3 inches at top of cut-stone. Beside the piers which carry the superstructure, there are at the draw 2 guard-piers, one above and one below, which serve to protect the draw from injury and to aid vessels in passing. It is substantially the Howe truss. The bridge across the entrance to the Niagara River, at Black Rock, designed for the use of the Grand Trunk, Great Western, Canada Southern, New York Central, Erie, and New York West Shore, and Chicago Railways, has a total length of 3,550 feet, 1,300 feet of which are over trestle-work upon Squaw Island, 450 feet over Black Rock Harbor, and the remainder over the main branch of the river. The river portion of the bridge has 8 piers and 2 abutments. Owing to the depth of water, from 12 to 45 feet, and a current of from 5 1/2 to 10 miles an hour, varyi