Ahead of the abolition of all tolls on 31 December 2018, the government is to reduce prices on 8 January 2018, when the Severn Crossings return to public ownership.
This will be the first time the tolls have decreased since their introduction in 1966. The normal annual inflation increase (due 1 January 2018) will also not be applied.
From 8 January coaches, buses and lorries will pay £16.70 (instead of £20), minibuses and vans will be £11.20 (£13.40), cars will be £5.60 (£6.70).
It is estimated that the abolishing of the tolls will boost the economy of South Wales by around £100 million a year and regular motorists could save £1,400 per year.
The Severn Bridge was built in 1966 and a second crossing was completed 30 years later.
When the bridges come under public ownership, they will be run by Highways England. Previously it has been run by Severn River Crossing plc.
The first Severn Bridge was opened in September 1966, providing a direct link from the M4 motorway into Wales, with a toll in place for use of the bridge to pay for the cost of construction.
It continually operated above capacity and in 1986 the then Government stated that a second bridge would be constructed.
In 1988 it was announced that tenders would be invited from private consortia to fund, build and operate the second bridge and take over the operation of the first bridge. In 1990 the concession was awarded to Severn River Crossing PLC.
Construction work also started in April 1992 and the second bridge was opened in June 1996.