An update on planned works at the Dartford-Thurrock River Crossing

Information Source: Connect Plus Services

Dear customer,

Connect Plus Services works on behalf of National Highways and Connect Plus to manage, operate and maintain the M25 and its linking roads, including the Dartford-Thurrock River Crossing.

We’re writing to update you on our planned works at the Dartford Crossing. We carry out maintenance work overnight, while traffic volumes are low, to keep the Dartford tunnels and the QEII bridge safe and reliable.

Overnight east tunnel closures (10pm to 5:30am) Monday 28 July to Friday 1 August 2025.

We’ll close the Dartford east tunnel for four nights from Monday 28 July to safely carry out maintenance work to the jet fans which ventilate the tunnel.

The Dartford east tunnel will close each night from 10pm and will re-open by 5.30am the following morning.

The Dartford west tunnel will remain open overnight for northbound journeys. Please note that a height restriction will apply to vehicles between 4.8m (15’-9”) and 5.0m (16’-6”) high. Important information for drivers of goods vehicles and high-sided vehicles is available here.

Weekend works (10pm to 5am Saturdays and Sundays)

As usual, we’ll carry out our weekly tunnel safety inspections and routine maintenance overnight on weekends. Typically, this means the Dartford west tunnel is closed between 10pm and 5am on Saturday nights, and the Dartford east tunnel is closed between 10pm and 5am on Sunday nights.

QEII bridge

Our next full overnight closure of the QEII bridge, for routine safety inspections and maintenance, is scheduled to take place from 10pm Saturday 16 August to 5am Sunday 17 August.

For full closure information please visit the Dartford-Thurrock maintenance webpage by clicking here.

As always, please remember that dates can be subject to change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England site. Our travel alerts give details of live incidents on our network.

If you require any further information, please don’t hesitate to contact us:

By phone: 0300 123 5000

By email: [email protected]

www.nationalhighways.co.uk