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Lower Thames Crossing: Improving connections and economic growth opportunities

Aerial view of Lower Thames Crossing

The Lower Thames Crossing is a proposed new road with a tunnel beneath the River Thames, connecting Kent, Thurrock and Essex. It is England’s single biggest roads investment project since the M25 was completed more than 30 years ago, is unprecedented in size and scale, making it the longest road tunnel in the U.K. One of the largest diameter bored tunnels in the world, it will give the opportunity to transform journeys across the south-east and beyond.

Community impact

The Lower Thames Crossing will form a vital part of the U.K.'s transport infrastructure, and the areas it will serve are home to economic hubs, key U.K. ports and thriving communities. It will help businesses large and small to grow and bring people and communities closer to jobs, education and leisure opportunities.

The Lower Thames Crossing will almost double road capacity across the River Thames, east of London. The 70mph crossing and the new connecting road network will provide, quicker, safer and more reliable journeys locally, regionally and nationally. At the end of 2018, the project completed the most significant roads consultation ever undertaken in the U.K. with a record-breaking response. The project is now in a critical phase of development as we help Highways England seek permission to build the crossing and begin the procurement to identify the partners that will undertake the construction.


extra road capacity to be created across the river connecting Essex and Kent


miles per hour


mile route offering new connections

What is involved?

Jacobs, working as part of the LTC CASCADE joint venture with Arcadis and COWI, is providing a full range of multi-disciplinary services to support the current Development Phase of the project, including detailed environmental surveys, traffic modelling, economic analysis, planning and design of the preferred route, full environmental impact assessments, engagement and consultation activities and preparation of the Development Consent Order (DCO) application.