"Erlebniszug San Gottardo" (Adventure train San Gottardo) of SBB Historic from Erstfeld over the Gotthard mountain line to Bodio, with the iconic Gotthard locomotive Ae 6/6 # 11411 "Zug", is crossing the 70 meter long Kellerbach bridge (new built in 1955 with concrete, faced with stones, two bows of 33 meter) between Wassen and Göschenen. Ae 6/6 # 11411, based in Erstfeld and built in 1955 by SLM, BBC and MFO with 4300 kW and 125 km/h maximum velocity, is kept in perfect shape, looking like fresh from the factory, by the enthusiastic group of the association Team Erstfeld.