The Cincinnati-Covington Bridge



Location of bridge: Cincinnati, Ohio-Covington, Kentucky

Bridge spans: Ohio River

Construction Commenced: Fall, 1856

Construction Completed: January 1, 1867

Chief Engineer: John A. Roebling

Bridge Constructor: John A. Roebling, Co.

Wire Rope manufacturer : John A. Roebling, Co.

Bridge Type: Suspension

Bridge opened to vehicles: January 1, 1867

Bridge opened to passengers : December 1, 1866

Dedication Date: January 1, 1867

Length of main span: 1,057 feet

Length of side spans : 281 feet

Length of approach : 341 feet (Cincinnati)

292 feet (Covington)

Total length, including approaches: 2,252 feet

Overall width:

Height of bridge at center of span: 103 feet

Weight of bridge (minus cables):

Total weight of bridge:

Total cost of construction: $1, 480, 350.55 (1867 dollars)

Still extant?: yes


Towers, Anchorages, Foundations and Masonry

Height of towers: 75 feet (Covington)

45 feet (Cincinnati)

Base of each tower: 82 feet long, 52 feet wide

Total height of towers above low water mark: 230

Size of anchorage at base: 75 feet long, 12 feet wide, 25 feet high


Cables

Number of supporting cables: 2

Diameter of each cable: 12 1/3

Length of each single wire in cables:

Diameter of each single wire in cables: 0.148"inch

Each cable contains 19 strands, containing 274 wires at a total of 5,206 wire in each cable.

Average strength of one wire: 1,620 tons

Ultimate strength of cable: 4,212 tons (one cable)

8,424 tons (two cables)

Number of stays in main span: 76

Strength of each stay: 90 tons

Aggregate strength of stays: 6,840 tons

United strength of cables and stays: 15,264 tons