Tolls will be scrapped on the Go Between and Gateway bridges during the G20 long weekend, the state government has announced.

Motorists will be able to travel across the Go Between Bridge for free between Friday November 14 and midnight on Sunday November 16.

Tolls on the Go Between Bridge have been lifted during G20. Credit:Glenn Hunt

Free travel across the Gateway Bridge will occur only on Saturday November 15 between 6am and midnight.

The move is estimated to cost taxpayers about $523,000, with the state government to foot the bill for the Gateway Bridge and the federal government to fund the suspension period for the Go Between Bridge.