News | UKCement trucks roll up to repair St Albans sinkholeThe huge sinkhole appeared yesterdayTwitter/@HertsFRSControlHannah Al-Othman2 October 2015Work has begun to repair a huge sinkhole that opened up yesterday in a St Albans street.The hole will be filled with foamed concrete - a process likely to take several days.Residents of Fontmell Close, St Albans were forced to evacuate their homes after the gaping 10-metre deep hole opened up next to their driveways.The sinkhole as seen from aboveAn emergency access road was created for residents to get their cars out via a playing field behind the site, and the reception centre at nearby Batchwood Sports Centre was used to yesterday and today by people wishing to shower or take shelter. Some residents were forced to book into local hotels overnight, while others remained at home, or stayed with friends and family. Hertfordshire County Council said there was already a smaller hole in the road, which contractors had been called to fill, which expanded at around 1.30am yesterday.The sinkhole is 10 metres deepSky NewsA Hertfordshire County Council spokeswoman said: “Following advice from Hertfordshire County Council’s geotechnical experts, engineers will start filling the sinkhole with foamed concrete today, Friday 2 October. Read MoreResidents forced to evacuate homes after huge sinkhole opens upGroup of pedestrians fall into sinkhole as they waited for busGiant sinkhole opens up on Manchester roadFears of gas leak after massive sinkhole opens above gas main, leavingFulham sinkhole: Woman 'ignores barriers' and falls down hole which“At this time we cannot say exactly how long this will take, but it is likely to take several days. "All agencies are working together to get residents back to their homes as soon as it is safe to do so.” Sinkholes are caused when a rock's surface layer is eroded, often by water MORE ABOUTHertfordshire County CouncilSt Albanssinkhole