Common
Lower Thames Crossing
Approved road crossing of the River Thames
Lower Thames Crossing
The Lower Thames Crossing is a road crossing of the Thames estuary downstream of the Dartford Crossing currently being constructed. When completed, it will link the English counties of Kent and Essex, connecting the districts of Thurrock and Gravesham, supplementing the Dartford route. First proposed in the late 2000s, the crossing is designed to relieve the pressure on the existing A282 Dartford Crossing. The proposed route would connect the M25 motorway and A13 north of the river to the M2 motorway south of the river. When built, the crossing would have the longest road tunnel in the UK at 2.6 miles (4.2 km). The road number A122 has been reserved for the new road. A planning application was initially submitted in 2020, before being withdrawn. A new planning application was submitted in November 2022; the planning process was expected to take 18 months, but this was extended due to the July 2024 general election. The crossing was eventually approved in March 2025, and early construction...
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