 The final design of the bridge included three cylindrical voids (holes) of , and on each side on the bridge.This reduced the weight and pressure on the crown and the bridge is still in operation today, although it is now only used for foot traffic.The "Theory of Arches and Pontypridd" states that as a bridge for commerce, it was a failure, as it was "only eleven feet wide between the parapets and so steep that wagons had to use a 'chain and drag' to descend from the crown."