• Connector.

    Route Fact 1

    27 million vehicles are forecasted to use the Lower Thames Crossing in its first year (75k vehicles a day)

  • Connector.

    Route Fact 2

    If built the Lower Thames Crossing will be the longest road tunnel in the UK at 2.5 miles long

  • Connector.

    Route Fact 3

    The route will include 14.5 miles of new road connecting the M25, A13 and M2

  • Connector.

    Route Fact 4

    Along the route 50 new bridges and viaducts will be built

The route and development boundary

Route developments and Map Books

The tunnel is comprised of two 2.5 mile (4km) tunnels, one for southbound traffic, one for northbound traffic crossing beneath the river.

It will pass beneath the River Thames with its southern entrance located to the east of the village of Chalk, and its northern entrance to the west of East Tilbury.

On the southern section, the tunnel will pass under the:
• A226
• Lower Higham Road
• Thames and Medway Canal
• North Kent railway line
• Thames Estuary and Marshes Ramsar site
• South Thames Estuary and Marshes Site of Special Scientific Interest (SSSI)
• Metropolitan Police Service Specialist Training Centre at Gravesend
On the northern section, the tunnel will pass under the East Tilbury Marshes.

The tunnel

Proposed tunnel images

The route north of the river passes from the crossing through Tilbury, Chadwell St Mary, Linford, Orsett and Ockendon. The route also includes four smaller areas; Tilbury junction, A13 junction, LTC and M25 junction, and M25 junction 29.

The following maps show the proposals for the section north of the river in Essex.

Tilbury junction

Leaving the northern tunnel entrance, the route will pass near to Tilbury and East Tilbury. Approaching the new Tilbury junction, it will be elevated, initially passing on an embankment and then on a viaduct as it passes through a flood zone.

The junction will be located west of East Tilbury, just over half a mile (approximately 1km) north of the northern tunnel entrance and 400 metres south of the Tilbury loop railway. It will form a roundabout with four single lanes to and from the new route. On the east side of the roundabout two connections have been included, one to a proposed rest and service area and another for tunnel maintenance and an access road.

The proposed rest and service area west of East Tilbury could be open 24 hours a day.

Beyond the Tilbury junction, the route will continue passing by West Tilbury and Linford.

Tilbury link road – we are not proposing a link road to Tilbury from the junction. Our modelling highlighted a number of drawbacks to our potential design at Tilbury and the A13, including unnecessary delays to HGV journeys and significant impacts on the local roads. The inclusion of the Tilbury junction means that the opportunity remains to deliver a direct link to Tilbury in the future, subject to necessary funding and consents.

Proposed rest and service area
A proposed rest and service area, situated west of East Tilbury would be open 24 hours a day. This would include parking for 400 cars (including disabled and motorcycle spaces), 80 HGVs and 16 coaches. There would also be provision for electric charging points, toilets, washing facilities and showers for HGV drivers, fuel, and food and drink. Within this site we have included a proposed maintenance depot and a provisional Driver and Vehicle Standards Agency (DVSA) facility.

A13 junction

The route continues passing by West Tilbury, Linford and Chadwell St Mary to approach a new junction layout between the Lower Thames Crossing, A13 and A1089. It will be located at the site of the existing junction between these roads to the west of Orsett.

The new route will pass under the A13 to the east of the existing A1089 bridge. The existing connections between the A13 and A1089 will all be retained with some modifications. A short section of the new route will reduce to two lanes in both directions around the A13 junction.

The connections to other roads that can be made from this junction are described after the main junction maps.

Beyond the A13 junction the route would continue north west of Orsett turning further west.

Traffic from the Port of Tilbury

Northbound (A1089) traffic from the Port of Tilbury would access the Lower Thames Crossing directly by using the new free-flow link roads at the A13 junction to go north or south.

Southbound (A1089) traffic wanting to access the Port of Tilbury would use the existing freeflow connections between the A13 and A1089 junction.

Traffic travelling northbound or southbound on the Lower Thames Crossing and wanting to access the port would have to come off at the A13 junction and travel east along the A13 to Manorway Roundabout, three miles away, and u-turn to use the existing A13 and A1089 junction.

LTC/M25 junction

The route would continue across the Mardyke river and Golden Bridge Sewer. It would then connect with the M25. The junction with the M25 will be located just under two miles (3km) south of junction 29 on the M25, near Ockendon Road.

The junction will have slip roads for northbound LTC traffic to join the M25 and southbound M25 traffic to join the LTC.

A short section of the M25 will be reduced from four lanes to three lanes.

Improvement work will also be carried out on the M25 between the new junction and junction 29.

M25 junction 29

Beyond the northern section of the Lower Thames Crossing, improvement and modification works will also be needed at junction 29 on the M25 and to the north of junction 29.

The M25 through junction 29 will be widened from three lanes to four in both directions with hard shoulders.

The connections of the north-facing slip roads at this junction will be changed because of the widening through the junction. Changes will also be carried out at the existing junction 29 roundabout.

The A2 will remain as four lanes in both directions with hard shoulders throughout. The M2 will be widened from three lanes to four in both directions through junction 1.

Two one-way link roads will be provided north and south of the A2, connecting to the existing A289 and the old A2 at the eastern end. Neither of these link roads will connect to the A2 at M2 junction 1, with these connections being made at the site of the new LTC junction instead.

The A2 will be kept at its existing height and the link roads will be at approximately the same height.

We will need to rebuild a section of the M2/A2 immediately to the west of the new junction and for approximately 2 miles (3.5km) to the east, including junction 1 of the M2.

The route will pass under Thong Lane and approach a new junction with the A2, situated at the eastern edge of Gravesend. The road will be in a cutting approaching the tunnel.

The following maps show the proposals for the section south of the river in Kent.

Map Book 1 – General Arrangements – view here

Map Book 2 – Land Use Plans – view here

Map Book 3 – Engineering Plans – view here

Map – General Arrangement of Whole Scheme – view here

Map – Large Scale General Arrangements – view here

Map – Land Use Plan – view here