ðə dˈɪɡswɛl vˈaɪədˌʌkt, dɪzˈaɪnd baɪ wˈɪljəm kjˈuːbɪt ænd ˈoʊpənd ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈɪfti, kˈæɹiz ðə ɡɹˈeɪt nˈɔːɹðɚn ɹˈeɪlweɪ ˌoʊvɚ ðə vˈæli ʌvðə ɹˈɪvɚ mˈɪmɹæm ɹˈɪvɚ mˈæɹən ˌɔn sˌʌm fˈoːɹɾi bɹˈɪk ˈɑːɹtʃᵻz, ɹˈiːtʃɪŋ əbˌʌv ɡɹˈaʊnd lˈɛvəl.
The Digswell Viaduct, designed by William Cubitt and opened in 1850, carries the Great Northern Railway over the valley of the River Mimram (River Maran) on some 40 brick arches, reaching  above ground level.