Utilities

Collapse/Sinkhole in Brow Gate, Baildon

On September 25th, 2017, a large sinkhole appeared on the pavement at a pedestrian crossing in Brow Gate, Baildon, causing traffic disruption indefinitely.  According to a pedestrian, the sinkhole opened within a time frame of a few minutes. Gas engineers from Northern Gas Networks are assessing the damage.

The local geological conditions are favourable for subsidence; superficial till (composed of clay) deposits shrink under prolonged dry conditions and 19th Century, unrecorded utilities infrastructure may be the cause of the collapse. 

Sinkhole appears in High Street Green, Hemel Hempstead

On May 2017, an 8-metre-deep sinkhole appeared on High Street Green, Hemel Hempstead, causing the road to be closed until around November. This is in the same neighbourhood (within 200 metres, or less than a 10-minute walk) from the 6-metre-deep sinkhole that opened up in Oatridge gardens in 2014, resulting in the evacuation of 17 people from their homes .  

Sinkhole on Edge Lane, Liverpool

On 29th June 2017, a 6 metre wide and 3 metre deep sinkhole opened in the middle of a busy Liverpool commuter route to the M62, Edge Lane, closing it for several weeks. United Utilities were called to the scene to assess the damage and discovered the sewer 6 metres down was blocked. The area rests upon superficial till rich with clays which are prone to subsidence which in turn can damage subsurface utilities. 

Sinkhole caused by collapsed Chalk Mine at Pinner Wood School, Harrow, Greater London

A large sinkhole opened in the car park of Pinner Wood School, Harrow, forcing its immediate temporary closure. Geotechnical surveys and site investigations have been commissioned to determine the cause of the collapse and assess the stability of the land.

Most recent of long legacy of Sinkholes appears in Ripon

On the 9th November 2016 a naturally occurring sinkhole opened up on Magdalens Road near the River Ure in west Ripon. The collapse, reaching depths of 9m, measured 10m x 20m and extended into the back gardens of three households.  The sewage system connecting the residencies collapsed and a safety parameter was set up resulting in the evacuation of 12 homes. On the 11th November BGS undertook investigation works concluding that the site remained at risk of further slippage. Monitoring continued, especially of the surface tension fractures which when recorded, had extended to twice the distance of the collapses 10m surface footprint. The BGS response team, after completing data collection, liaised with Harrogate Borough Council, North Yorkshire Fire and Rescue Service, and utility services in regards to ground stability. Currently, the team then returned to the BGS to analyse the field data. Following this, the Harrogate Borough Council officers met with representatives of North Yorkshire County Council highways department, Yorkshire Water and Northern Powergrid. As of the 14th of November all residents remained displaced, with utility companies working towards making plans for temporary solutions.

Sinkhole in Lawrence Square, Gravesend, Kent

In early 2015 at Lawrance Square, Northfleet, Gravesend, Kent – an extended period of subsidence culminating with the appearance of a sinkhole has forced several shops to close and evacuation of 7 sets of council tenants for fears of further subsidence.
 

Sinkhole makes global news in St Albans, Hertfordshire

On 1st October, 2015, a giant sinkhole opened up in Fontmell Close, St Albans forcing families to evacuate their homes and cutting off utilities to over 50 properties.