Going Underground

Tunnels

M4

Brynglas¹

[Steep Hill]

Bored

365

1965-80

M25

Bell Common

Epping Forest

Cut & Cover

450

1984

M25

Holmesdale

[Built-up Area]

Cut & Cover

600

1984

A1(M)

Hatfield

Galleria Shopping Centre

Cut & Cover

1400

1986

A58(M)

Inner Ring Road

Leeds General Infirmary

Cut & Cover

367

1964-75

A3

Hindhead

Bored/Cut & Cover

1800

2009

A19

Tyne

River Tyne

Bored

1645

1967

Toll

A19

2nd Tyne

River Tyne

Immersed Tube

2600

2008

A20

Folkestone

Round Hill

Bored

365?

A26

Cuilfail

[Built-up Area]

Bored

420

A27

Mile Oak

Southwick Hill

Bored

390

1994

A38

Saltash

[Built-up Area]

Bored

370

1981

A40

Monmouth

[Escarpment]

Bored

185

A55

Conwy

River Conwy

Immersed Tube

1089

1991

A55

Dwygyfylchi

Penmaen-Bach

Bored

660

1989

A55

Penmaenmawr

Penmaenmawr

Bored

930

1983

A57

Mottram

Cut & Cover

170

2007

A101

Rotherhithe

River Thames

Bored

1705

1908

A102

Blackwall (Northbound)

River Thames

Bored

1362

1897

A102

Blackwall (Southbound)

River Thames

Bored

1201

1967

A282

Dartford (Northbound)²

River Thames

Twin Bored

1436

1963/1980

Toll

A289

Medway

River Medway

Immersed Tube

720

1996

A299

Chestfield

Chestfield Golf Course

Cut & Cover

A299

Pegwell³

[Bulit-up Area]

Bored

800

2000

A303

Stonehenge

World Heritage Site

Bored

2100

2009

A505

Baldock

Weston Hills

230

2006

A538

Manchester Airport⁴

[Airport Runway]

Cut & Cover

400

A643

Holbeck

[Playing Fields]

Cut & Cover

160

A658

Leeds-Bradford Airport

[Airport Runway]

Cut & Cover

237

A739

Clyde

River Clyde

Bored

760

1963

A1203

Limehouse Link

Limehouse Basin

Cut & Cover

1800

1993

A1261

Aspen Way (Eastbound)⁵

[Bulit-up Area]

Bored

A4232

Butetown

[Built-up Area]

Bored

715

(Tunnel)

Kingsway (Eastbound)

River Mersey

Bored

3237

1934

(Tunnel)

Queensway (Westbound)

River Mersey

Bored

2438

1971

[Unclassified]

Caernarfon Castle Square, Caernarfon, Gwynedd⁶

[Built-up Area]

Bored

1999

[Unclassified]

Heathrow Vehicle Tunnel, Heathrow, London

Heathrow Airport

Cut & Cover

628

[Unclassified]

Manifold or Swainsley Tunnel, Swainsley, Staffordshire⁷

Swainsley Hills

Bored

[Unclassified]

Samphire Hoe, Dover, Kent

Dover Cliffs

Bored

[Restricted]

Heathrow Cargo Tunnel, Heathrow, London⁸

Heathrow Airport

Cut & Cover

1986?

[Restricted]

Park Tunnel, Nottingham⁹

Nottingham Castle Rock

Bored

1850?

Underpasses (some signed as tunnels)

M1/M62

Lofthouse Interchange

[Subsurface Road]

Cut & Cover

1999

M8

Charing Cross

[Subsurface Road]

Cut & Cover

1972

A167(M)

Central Motorway East

[Subsurface Road]

Cut & Cover

A2

Rochester Way

Cut & Cover

156

A4

Hyde Park Corner

[Subsurface Road]

Cut & Cover

310

A12

Cambridge Park

George Green

Cut & Cover

A23

Gatwick Airport

South Terminal Building

Buildings Above Street Level

A40

Hanger Lane

[Subsurface Road]

Cut & Cover

241

A50

Meir

[Subsurface Road]

Cut & Cover

280

A62

Castlegate

[Subsurface Road]

Cut & Cover

A301/A4200

Aldwych Underpass¹⁰

Kingsway/Aldwych/Lancaster Place

Cut & Cover

365

1964

A302

Westminster Bridge Road

Waterloo Station

Buildings Above Street Level

A406

Angel Road

[Subsurface Road]

Cut & Cover

A594

St Nicholas Circle

[Subsurface Road]

Cut & Cover

A3211

Upper Thames Street

City of London School

Cut & Cover

A4044

Temple Way

[Subsurface Road]

Cut & Cover

A4400

Paradise Circus

[Subsurface Road]

Cut & Cover

500

A4400

Smallbrook Queensway

[Subsurface Road]

Cut & Cover

548

A4400

St Chads Circus

[Subsurface Road]

Cut & Cover

192

B100

Beech Street

The Barbican

Buildings Above Street Level

B986

Denburn Road

[Car Park]

Cut & Cover

B4100

Lancaster Circus

[Subsurface Road]

Cut & Cover

197

[Unclassified]

Castle Baynard Street, Blackfriars, London

City of London School

Cut & Cover

[Unclassified]

Joiner Street/Stainer Street/Weston Street, London Bridge, London

London Bridge Station

Buildings Above Street Level

[Unclassified]

Lower Downs Road, Raynes Park, London

[Railway Lines]

Parallel Viaducts

[Unclassified]

Neville Street/Swinegate, Leeds

Leeds Station

Buildings Above Street Level

[Unclassified]

Stansted Airport, Essex

Terminal Building

Buildings Above Street Level

[Unclassified]

Travis Street, Piccadilly, Manchester

Manchester Piccadilly Station

Buildings Above Street Level