Sunday, December 3, 2023

New animation highlights Friday gridlock on the Dartford Crossing

ONE of the UK’s most vital transport links, the Dartford Crossing is the only road crossing of the River Thames east of London.

It connects key ports, distribution hubs and manufacturing centres, with almost 40% of vehicles using it carrying goods, far higher than anywhere else on the Strategic Road Network (SRN).  It plays a key part in daily life, keeping supermarket shelves stocked and supply chains moving, as it transports 70% of all goods arriving at the Port of Dover. 

However, it is also one of the UK’s most congested and therefore unreliable roads, causing misery for motorists and acts as a handbrake on the national economy.   

The Dartford Crossing opened in 1963 with a single tunnel, before a second tunnel was added in 1981 and the Queen Elizabeth II bridge in 1991. Demand has increased dramatically, from around 2 million vehicle crossings a year when the first tunnel opened, to well in excess of 50 million today. Designed for 135,000 vehicles per day, it is now operating over capacity and is regularly used by over 150,000 vehicles per day.  More than 180,000 vehicles use Dartford Crossing on its busiest days – expected to be the norm by 2041 as demand continues to rise.   

Despite one of the largest traffic teams in the country working around the clock to keep it moving, the huge demand on the Dartford Crossing makes it one of the most unreliable sections of the Strategic Road Network, with over 3000 incidents reported a year. The road suffers from severe congestion, with tailbacks that spread for miles along connecting major roads such as the M25, A13 and A2 as well as causing gridlock on local roads. This leads to poor air quality in areas such as Dartford due to the volume of slow moving and stationary traffic.  

Data shows that Fridays at the Dartford Crossing see sustained high volumes of traffic and congestion, from mid-morning well into the evening.   

 On a typical day the levels of congestion means: 

  • 95% (over nine out of ten) northbound journeys in the evening peak are delayed 
  • Almost two out of three northbound journeys between 4pm and 5pm take twice as long as they should 
  • During the northbound evening peak, on average 3 times every month a journey will take at least 5 times longer than it should  

Matt Palmer, Executive Director, Lower Thames Crossing said “There has never been a more urgent need to address the problems at Dartford Crossing and keep the UK economy moving.  The best and only solution is the Lower Thames Crossing – it will take over 13 million vehicles off the Dartford Crossing each year, meaning journeys across the River Thames will become quicker, more reliable and less stressful.  The benefits will be felt by businesses and individuals alike as new opportunities open up, as a result of reliable journeys.  Our economy will receive a much needed boost, as the Lower Thames Crossing will allow businesses the certainty they need to operate and grow and for people to access jobs on both sides of the Thames.”  

Tim Aker, Development Manager for the Federation of Small Businesses (FSB) in Kent and Medway, said: “At every consultation, FSB members have supported the Lower Thames Crossing in huge numbers.  The current congestion that we face on a regular basis costs SMEs money, time, and prospects.  Businesses in Kent shouldn’t have to second guess new opportunities depending on whether the congestion from the Dartford Crossing will affect their journeys.  Our members believe this project cannot come soon enough.” 

Tom Cornwell, Policy Lead, Road Haulage Association (RHA) said: “We believe that the Lower Thames Crossing project is good for our industry.  The roads are the workplace of the drivers of our industry and our members need to experience a road network that is congestion free and has consistent, reliable and predictable journey times.  The Lower Thames Crossing will contribute towards achieving this objective. 

Kate Willard OBE, Estuary Envoy and Chair of the Thames Estuary Growth Board said “Traffic at Dartford Crossing is causing huge pressures locally, impacting air quality, and very literally slowing the economy. Its hugely important that we find a solution. The Lower Thames Crossing presents a great opportunity to improve connectivity across the river, unlocking travel and growth in the Thames Estuary region and the country as a whole. As a carbon neutral pathfinder project it is also a brilliant opportunity to raise the standard for green construction across the UK from right here in the Estuary.”     


  1. More misleading propaganda from National Highways. The current crossing has a design capacity of 135,000 vehicles per day, but regularly sees 180,000 per day. That means you’d need to have more than 25% reduction to bring it back below capacity. But the proposed LTC would take as little as 4% away, and would also mean a 50% increase in cross river traffic if it goes ahead. The Dartford Crossing would still be over capacity even if LTC goes ahead.

    National Highways are not planning how traffic would migrate between the two crossings when there are incidents either, and there would not be adequate connections.

    When there’s an incident at the Dartford Tunnels and traffic tries to come off the M25 onto the A2 coastbound to get to the LTC, there would be just one single lane from the A2 onto the LTC.

    When there’s an incident at the QE2 bridge and traffic tries to come off the M25 onto the A13 eastbound to get the the LTC, there is no access to the LTC from the A13 eastbound. Traffic would have to go all the way down the A13 to the Stanford A1014 junction, up around the traffic lighted roundabout (alongside DP World/London Gateway etc traffic) back westbound on the A13 to the LTC slip road which would be just past (but not accessible from) the Orsett A128 junction.

    If instead it tries to come off the M25 directly onto the LTC, the M25 would be 5 lanes of traffic at this point, and the LTC southbound until past the A13 is just two lanes.

    The proposed LTC would be hugely destructive and harmful, is not fit for purpose, wouldn’t solve the problems at the Dartford Crossing, and would be a complete waste of £8.2bn+ of taxpayers’ money.


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