He improved the transportation system by building roads, viaducts, bridges and seaports. Cuts are used as alternatives to indirect routes, embankments, or viaducts. BRT network consists of bus lanes along expressways and elevated BRT viaducts on Xiamen Island. The remaining sections are on embankments, viaducts or at ground level. The project posed the challenge by involving high bridges, viaducts and tunnels. This necessitated expensive construction techniques, new bridges, new viaducts, and the long Box Tunnel. A mile-long connection was built, carried entirely on viaducts and bridges. Hinges appear in large structures such as elevated freeway and railroad viaducts. This is opposed to viaducts using continuous spans over the piers. Many of the stalls and shops are set in large arches in railway viaducts. There are two railway viaducts at Warmsworth. Elevation is usually constructed as viaducts, typically a long pier bridge. One of three railway viaducts in the city that carry the Great Eastern Main Line. The settlement is dominated by the several railway viaducts built in the 19th century. The B&NSR was one of the railways carried on the Midford viaducts (see photograph above).