Northampton Borough Council and Northamptonshire County Council say they're doing their best to solve the problems with the new bus station.
"We have been working throughout the day at North Gate bus station to identify the issues that have caused today's traffic gridlock in Northampton and to resolve them.
"Things worked well during the rush hour today and so we need to find out why the traffic became gridlocked as the day wore on. Northampton Borough Council, Northamptonshire County Council and the bus companies have been on the scene trying to get things moving again and discover what the issues are as well as getting traffic moving as quickly as we can.
"We are looking at the traffic management plans as a matter of urgency to ensure that there is no repeat of the problems we have seen today.
"We knew that there would be teething problems as there are bound to be with any such major project and we acknowledge that these were major. We apologise to all the motorists and bus passengers who were caught up in the delays today and we thank them and acknowledge their concerns."
More top news
Police have released pictures of Pauline King, 82, on her last trip to the shops before she was murdered at her own home
Essex Police have unveiled a new crime-fighting blueprint including job cuts and the closure of police stations.
A Northampton man has been jailed for beating one dog and causing another suffering