The UK Government said it has "no plans" to reintroduce tolls or charges on the Severn Crossings, after a suggestion a congestion charge was being considered for the two bridges.
They were then introduced on the second crossing - renamed the Prince of Wales Bridge in April last year - when it opened 30 years later in 1996.
The UK Government said scrapping the tolls would provide an immediate benefit of over £100 million per year for Wales.
Just over a year on, the West of England Combined Authority (WECA) said the removal of the tolls is likely to have made congestion worse and increased delays, with the real implications "still being assessed".
As a result, WECA said it is considering "charging measures and controls, on both sides of the bridges" to deal with the issue.
Following, WECA's statement, the UK Government insisted the tolls would not be returning.
A spokesperson said, "We removed the tolls to boost business, enhance inward investment, increase tourism and create jobs on both sides of the Severn. Since their abolition, motorists are collectively saving hundreds of thousands of pounds per day and travel between Wales and south west England has been made easier.”