William Arrol & Co. was a prominent Scottish engineering company founded in 1856 by William Arrol. The company specialized in the construction of bridges, viaducts, and other large infrastructure projects. It gained recognition for its innovative designs and engineering techniques, contributing significantly to the industrial landscape of the United Kingdom. One of the company's most notable achievements was the construction of the Forth Rail Bridge, completed in 1890. This iconic structure is celebrated for its distinctive design and engineering prowess, showcasing the capabilities of William Arrol & Co. and solidifying its reputation in the field of civil engineering.