Length of arch span 503 metres 
 
Height of top of arch  134 metres about mean sea level  
 
Height to top of aircraft beacon  141 metres above mean sea level  
 
Width of deck  49 metres 
 
Clearance for Shipping  49 metres 
 
Height of Pylons  89 metre above mean sea level  
 
Base of each abutment tower  68 metres across and 48 metres long (two pylons rest on each abutment tower)  
 
Total length of bridge  1149 metres including approach spans  
 
Bearing Pins  Each of the four pins measures 4.2 metres long and 368 millimetres in diameter  
 
Thrust on bearings  Under maximum load approximately 20,000 tonnes on each bearing  
 
Number of rivets  Approximately 6,000,000 
 
Largest rivet  Weighed 3.5 kilograms and was 395 millimetres long  
 
Longest Hanger  58.8 metres  
 
Shortest Hanger  7.3 metres 
 
Total weight of steelwork  52,800 tonnes including arch and mild steel approach spans 
 
Weight of arch  39,000 tonnes  
 
Rock excavated for foundations  122,000 cubic metres  
 
Concrete used for bridge  95,000 cubic metres  
 
Granite facing used on pylons & piers  17,000 cubic metres  
 
Allowance for deck expansion  420 millimetres  
 
Allowance for arch expansion  The arch may rise or fall 18 centimetres due to heating or cooling  
 
Number of panels in arch  28, each 18.28 metres wide  
 
Record tonnage erected  589 tonnes of steelwork was erected on the arch in one day on 26 November 1929  
 
Paint required  272,000 litres of paint were required to give the Bridge its initial three coats.