Brunel decided that a viaduct would be the optimal means of crossing the river and designed such a structure. Possessing eleven spans and stretching to a length of 1,200 ft, this viaduct was largely composed of timber, which was treated with creosote under pressure as to sufficiently weather-proof them against the prevailing conditions of the location. Construction work commenced during 1846.
Brunel chose a bridge as the best way to cross the river and designed one with eleven spans, spanning 1,200 feet long. The bridge was primarily made of timber that was treated with creosote under pressure to protect it from the weather. Construction began in 1846.