The Attock Bridge on the Indus was originally designed by Sir Guildford Molesworth (1828-1925). Guildford was also the first General Manager of Sri Lankan Railway, which was then called Ceylon Railway. The bridge is located about 80 km (50 miles) south-west of Peshawar and forms one of the most important strategic and commercial crossings on the Indus. The structure was designed and constructed by Sir Francis O’Callaghan and Mr. Johnson.

More details of the Attock Bridge can be found here