Bridge location: Niagara Falls, New York - Canada

Bridge spans: Niagara River

Chief Engineer: John A. Roebling

Bridge Constructor: John A. Roeblings, Co.

Wire Rope manufacturer: John A. Roeblings, Co.

Bridge Type: Suspension

Construction Commenced: September, 1852

Construction Completed:

Dedication Date:

Length of main span: 821 feet, 4 inches

Length of side spans :

Total length:

Overall width:

Elevation of Railway track above median water: 245 feet

Total weight of bridge:

Bridge opened to railroad vehicles: March 18, 1855

Estimated total cost:

Actual total cost:

Still extant?: No

Height of towers: 60 feet, 6 inches

Base of each tower: 15 feet long, 15 feet wide, 6 feet high

Size of anchorage at base:

Size of anchorage at top:

Weight of each anchor plate:

Amount of Concrete in tower bases: 786 cubic yards (American side)

459 cubic yards (Canadian side)

Amount of concrete in Arch base: 45 cubic yards (American side)

45 cubic yards (Canadian side)

Amount of concrete in Anchorages: 2006 cubic yards (American side)

1163 cubic yards (Canadian side)

Number of supporting cables: 4

Diameter of each cable: 10 inches

Length of each single wire in cables:

Diameter of each single wire in cables:

Ultimate strength of cable: 12,000 tons

Weight of cables:

Weight of bridge (-cables)

Permanent weight supported by cables: 1,000 tons

Number of suspender cables: 624

Ultimate strength of suspender cables: 18,720 tons