List of long tunnels by type

This page presents the same tunnels as in list of tunnels by length in separate lists according to the different tunnel types.

Rail
Note: This list only contains tunnels that are longer than 25 km.

Under construction
Note: This list only contains tunnels that are longer than 25 km.

Underground rapid transit
Only continuous tunnel sections should be included, at least 35 km long, excluding branches from the longest tunnel.

Under construction
Only continuous tunnel sections should be included, at least 30 km long.

Under construction
Note: There are buried oil and gas pipelines, up to several thousand kilometers long. See also:
 * List of oil pipelines
 * List of natural gas pipelines

Bicycle and pedestrian
Most of the tunnels listed were built for other purposes, and have not been redesigned. The Fyllingsdalentunnelen is one example of a tunnel built to purpose from the start.

The tunnels listed here can be either be pure cycling tunnels and/or pedestrian tunnels with separate tubes, or shared-use tunnels (i.e. having a shared lane, or a bike lane and footpath without a non-crossable physical separation).

Sewerage

 * Spotswood sewer tunnel

Power

 * London Power Tunnels
 * Azabu-Hibiya Common Utility Duct

Gas

 * Humber Gas Tunnel

Bored

 * Channel Tunnel

Cut-and-cover

 * Metropolitan Railway

Mined

 * Caltrain San Francisco Downtown extension
 * City Rail Link
 * Crossrail (Bond Street station)
 * (Part of) Küssnacht Southern Bypass
 * (Part of) Wanchai Bypass

Drill and blast

 * Lötschberg Base Tunnel

Immersed tube

 * Conwy Tunnel
 * Medway Tunnel

Double-decker or multi-level

 * Black Hill tunnels (rail)
 * Central Kowloon Route (partly) (road)
 * Great Istanbul Tunnel (rail and road) (proposed; triple-decker)
 * Island line - three stretches: between Sheung Wan and Admiralty stations, between Fortress Hill and Admiralty stations, and between Tai Koo and Shau Kei Wan stations (rail)
 * Kwun Tong line and Tsuen Wan line between Prince Edward and Yau Ma Tei stations
 * Lion Rock Tunnel and Second Lion Rock Tunnel (road, and water and towngas supply)
 * LIRR Manhattan Tunnel (rail)
 * Maastricht A2 tunnel (road)
 * Narodnogo Opolcheniya street tunnel (road)
 * State Route 99 tunnel (road)