Work to repair a burst water main in Birmingham which caused water shortages and massive traffic disruptions may take up to a week to complete.
Thousands of drivers were caught up in delays when the burst happened at the corner of Lichfield Road and Cuckoo Lane near Spaghetti Junction in Aston on Thursday morning.
It also forced the closure of nine schools, while Severn Trent also received 2,000 calls from householders left without water.
In a separate flooding incident in Rubery, a burst water pipe on the site of Colmers School and Sports College led to its closure and that of three other schools in the vicinity.
Colmers Junior School, Colmers Infant School and Rubery Infant School will remain closed today while Severn Trent carry out repairs.
There were long queues on the roads around Aston as drivers heading to the city centre during rush-hour were diverted after police blocked the road at Salford Circus beneath Spaghetti Junction, for safety reasons.
Tailbacks spread for miles, with motorists on the M6 as far north as Stoke being warned of the problem.
Severn Trent began repair work last night but said the work may take a week to complete properly.
Lichfield Road was partially opened this morning and the Highways Agency said traffic was flowing “as normal” around the Aston Expressway and M6.
Among the schools affected yesterday by water shortages were St Matthew’s Church of England Primary School, Nechells Primary School, Cromwell Primary School, Deykin Avenue Primary, Hodge Hill Girls School, Hodge Hill Primary School and Manor Park School in Aston. All were expected to re-open this morning.