Tunnels underneath the River Thames range from foot-tunnels to road tunnels and the tunnels of the Underground. The first of these, the Thames Tunnel, designed by Marc Brunel, was the first tunnel known to cross under a navigable river. It ran for from Rotherhithe to Wapping, and opened in 1843. It was used as a pedestrian subway, as the company did not have enough money or finance to build the intended access ramps for horse-drawn traffic. These tunnels were later used by the East London branch of the Metropolitan Railway from Shoreditch to New Cross. It was refurbished in 2011 and became part of the London Overground network.