Rain 'washed salt off A15 crash road'
A council has said rain washed away gritting salt on a North Lincolnshire road just hours before a 29-vehicle pile-up that was blamed on black ice.
Humberside Police said the vehicles were involved in the crash on the northbound carriageway of the A15 near Barton-upon-Humber on Tuesday morning.
North Lincolnshire Council said the road had been gritted on Sunday night.
It said: "Tuesday morning's rain arrived earlier than forecast, washed away the salt and turned to ice".
Humberside Fire and Rescue said the crashes seemed to have been caused by black ice which was barely visible to commuters. There have been no serious injuries.
Insp Paul Sergeant of Humberside Police said: "There was a lot of vehicles involved in this incident and we are keen to speak to anyone who may have been involved in the collision.
"The sudden drop in temperature and rain caused the road surface to be very dangerous."
In a statement North Lincolnshire Council said the weather forecast did not lead officials to believe gritting was necessary.
The statement said: "There was residual salt on the A15 from Sunday night's gritting run, which took place between 6pm and 9pm on Sunday.
"This morning's rain arrived earlier than forecast. It washed away the salt and turned to ice on the road surface.
"We urge motorists to take extra care when the weather is cold and wet and drive according to the conditions.
"There was salt on the route from Sunday night and, according to the weather forecast, it was not necessary to grit it again.
"Even if the road had been gritted again, the rain would have washed it away as it did with the salt that was still there."