Complex sentence: In uptown Hoboken, the 14th Street Viaduct begins at the intersection of Willow Avenue and travels perpendicular to the Hudson Palisades in Union City, as it ascends to connect to the Wing Viaduct which runs along the face of the cliff.
Split into simpler sentences: In uptown Hoboken, the 14th Street Viaduct begins at the intersection of Willow Avenue and travels perpendicular to the Hudson Palisades in Union City. It ascends to connect to the Wing Viaduct which runs along the face of the cliff.