Iyo bigeze ku mikorere ya moto, ikintu kimwe cyingenzi gikunze kubona ni kwinjiza viaduct. Ubu buryo bugira uruhare runini mugutezimbere uburambe muri rusange bwo kugenda mugabanya ingaruka zidasanzwe mumuhanda, bityo kwemeza urugendo rworoshye. Gusobanukirwa uburyo kwinjiza ibintu bikora bishobora kunoza cyane ihumure n’umutekano w’urugendo rw’ipikipiki