Cafodd y bont bresennol ei hadeiladu yn 1960 ac mae ar hyn o bryd yn cludo dros 61,000 o gerbydau y dydd, sy'n llawer uwch na'r hyn a fwriadwyd.
The current crossing was built in 1960 and presently carries more than 61,000 vehicles per day which is far higher than it was designed for.