This company had already suffered severe casualties building a ramp down the face of a retaining wall into the dry Canal du Nord. Now, under VI Corps Troops RE, the two companies (14 officers and 310 men in total) built a Hopkins steel bridge across the canal between Hermies and Havrincourt. This was the largest heavy steel bridge erected on the Western Front during the war, with a span of above a deep gap; in total the bridge was long, launched by rollers. It took 80 three-ton lorry loads to bring up the material, and the total time to unload and erect the bridge was 104 hours. It was opened for traffic on 2 October and completed on 5 October. In the autumn of 1918, the unit constructed further military bridges that allowed the Allied troops to cross three main river obstacles: the Canal de l'Escaut, crossing Cambrai and going to the Canal de Saint-Quentin on the south, the Selle and the Ecaillon, two parallel rivers, separated from only two or three miles, in the southwest of Quesnoy. The New Zealand Tunnelling Company reinstalled the communication roads and railways above natural obstacles at Noyelles-sur-Escaut, Masnières, Cambrai, Solesmes, Saint-Waast and Romeries. After the Armistice of 11 November 1918, the New Zealand Tunnelling Company stayed in France until the demobilisation of the first New Zealand tunnellers began in early December. On 30 January 1919, the unit arrived in Great Britain, from where the soldiers left for home on 14 March. On 23 April, the last men of the New Zealand Tunnelling Company arrived in Auckland. The next day, the unit was formally dissolved.