shafts 1 and 4 to a duct below the roadway which in turn feed via 28 grilles spaced evenly along the road into the tunnel. In 1930, following several incidents, including one where 49 people were taken to hospital, the ventilation was upgraded with more powerful fans and extract fans were added in shafts 2 and 3. As traffic has increased, periodically the ventilation fans have been upgraded however the underlying concept has remained the same. Alternative crossings include Tower Bridge to the west or the Greenwich foot tunnel to the east. Rotherhithe station is almost adjacent to the southern tunnel entrance, and Limehouse (in Ratcliffe Lane) is the closest station to the northern entrance. Local buses used to pass through the tunnel. Route 82 ran between Stepney East Station (now Limehouse) and St. Marychurch Street in Rotherhithe, before being withdrawn in 1968. The tunnel remained unserved until route P14 commenced in 1988 from Surrey Quays and the Isle of Dogs. This route was withdrawn and partially replaced by a new 395 route in 1999 running from Limehouse (Burdett Road) instead of the Isle of Dogs. The 395 route was withdrawn without replacement on 28 April 2006, due to high running costs and low passenger usage. By this time it was the only Transport for London bus route that still used mini-buses, which were necessary due to the tunnel's width restriction. One iteration of the opening credits of the 1970s TV series The Professionals feature the Rotherhithe Tunnel whilst the 1951 film Pool of London features a police chase scene in the tunnel and shoot-out up and around the shafts. The video for The Specials' song "Ghost Town" was partially filmed in the tunnel. See also List of crossings of the River Thames List of tunnels in the United Kingdom Tunnels underneath the River Thames Thames Tunnel References External links Transport in the London Borough of Southwark Transport in the London Borough of Tower Hamlets Road tunnels in England Tunnels underneath the River Thames Tunnels completed in 1908 Rotherhithe Limehouse 1908 establishments in England