Penyffordd Railway Bridge height wrong

Sign for bridge shows  4.1m - 13 ft. When in fact the correct conversion is 13.5 ft. So lorry drivers think the bridge is 6 " higher.

FCC must have known this forever.

* info taken from Daily Post comments

http://www.dailypost.co.uk/news/north-wales-news/what-truck-calls-bridge-heights-13851479#comments-section