The River Humber gas pipeline is part of the national transmission system. It connects an import location for gas at Easington, on the East Yorkshire coast, to the national network – delivering gas supplies to millions of customers throughout the UK.

This National Grid project involves replacing a high-pressure gas pipeline, housed within a tunnel, underneath the River Humber. It includes inserting a single string of 42” steel pipe and connecting it into the above-ground installations. This will be the longest gas pipeline in a tunnel, inserted in a single string, in the world. 

The existing pipeline crosses the River Humber in a trench on the river bed, between Paull on the north bank and Goxhill on the south bank. Over time, tidal patterns have eroded the river bed covering it and work was carried out to keep it buried as a short term measure.

The new pipeline will be a long-term replacement. It will be 3.36 miles (5.4km) long, of which 3.18 miles (5km) will be tunnelled. It will be 42" (1050mm) in diameter and will transport natural gas at a pressure of 70barg.