Two cables, each 11,618 wires of 0.196 inches in diameter and 100/100 tonnes per square inch ultimate tensile strength
Total length of wire in two main cables
30,800 miles (49,568km)
Maximum load in one main cable under deal load only in the anchor span
12,100 tonnes
Total weight of wire in two main cables
7,600 tonnes
Is the cable structure dehumidified
n/a
Diameter of hanger ropes
2.25 inches on side spans (57mm)
1.875 inches on main span (48mm)
Hanger rope
296 feet (90.2m)
8 feet (2.4m)
Maximum hanger rope load
220 tonnes – side span – main span
Construction
Construction Funded by a government, loan.
Loan was repaid by tolls.
Maintenance and operation costs 1964 to 2008 covered from tolls.
Ongoing costs
Since 2008, the bridge is funded from the Scottish Government Transport Budget
