Highway Maintenance

Urban Highway Drainage

Highway Surface Water Drainage - Typical Urban Situation
  • What is a Highway Gully?

A highway gully is a drainage pit covered by an open metal grating located on the road edge. It’s purpose is to drain rain water from the highway into the sewerage system.

Gully

Responsibility: typically the Highway Authority (Hampshire County Council.

  • What is a Yard Gully?

A yard gully is a drainage pit covered by an open metal grating located adjacent to building or in the centre of a yard. It’s purpose is to drain rain water from buildings and yards associated with buildings.

Responsibility: typically the landowner.

  • What is a Soakaway?

A soakaway is a drainage pit covered by a metal cover or sometimes by soil. Its purpose is to allow rain water from buildings to permeate into the surrounding subsoil. These were sometimes used for highway purposes to drain the highway.

Responsibility: typically the landowner.

  • What is a Highway Drain?

A highway drain is pipe connecting the highway gully to the surface water sewer. It’s purpose is to carry rain water from the highway gully into the surface water sewerage system. In some circumstances the drain may outfall into rivers, ponds, etc via a petrol interceptor.

Responsibility: typically the Highway Authority (Hampshire County Council).

  • What is a Surface Water Sewer?

Highway Surface Water Drainage Sewer

A surface water sewer is a large underground drain connecting the highway drain to the sewerage treatment works. It purpose is to carry surface water, and in some circumstances surface water and foul sewerage combined, to the sewerage treatment works.

Responsibility: the sewerage undertaker, such as Southern Water and Thames Water.