Durham County Council said its gritter crews worked around the clock
Ambulance service bosses have withdrawn claims that crews were hampered because roads had not been gritted by Durham County Council during heavy snowfall.
Earlier this week the North East Ambulance Service Trust (NEAS) said paramedics in County Durham and eastern Teesside reported difficulties.
Council bosses denied the claims, insisting gritting teams had been out.
The ambulance service has now issued an apology and has accepted that main routes had been treated.
An NEAS spokesman said: "We accept the main routes had in fact been gritted and were regularly cleared throughout extreme weather conditions.
"Indeed, we are grateful to the county council for the assistance that they were able to afford some of our crews during the worst of the precipitation overnight on Saturday and Sunday.
"We would therefore like to apologise for any offence that may have been caused and assure the public we have absolute faith in the council's commitment to road gritting being a top priority."
Durham County Council said its entire fleet had been working round the clock to keep roads open.