The crash has happened on the the southbound carriageway and traffic is backing up towards Great Casterton.
A main road in Rutland will be closed for two weeks.
Rutland County Council has approved new proposals intended to help guide how transport services are delivered over the next 20 years.
Two accidents on either side of the A1 carriageway are causing delays.
There are delays of 21 minutes on the A1 northbound between the A47 junction for Wansford and Stamford this afternoon (September 5).
Repair work to the Grade Two listed North Bridge in Oundle has been further delayed because of planning issues.
A woman was seriously injured in the accident.
Rutland County Council said residents in Stocken, Stretton, Clipsham and Greetham will have their green bins collected tomorrow (September 2).
Lincolnshire Police said the woman had been taken to the Queen's Medical Centre in Nottingham with 'serious injuries'.
Four-car crash has closed the A1.
A school bus has been axed in favour of pupils using public transport.