Never crossed it, but when in Lincolnshire last year, we thought we may head home that way and so looked it up. Google is your friend, as always, but it won't break the bank https://www.dunhambridge.co.uk/Tolls#2022
Its website (see Ina’s post) tells you about card payments etc.
The tolls are less than £1, I’m amazed! Probably costs more in salaries to collect them than the tolls bring in - the Erskine Bridge stopped charging tolls years ago for that reason, and it was a lot more expensive.
I think this must have been the bridge where I argued that my campervan had travelled in France, Spain, Germany, Italy etc same class as a car, but the man insisted I pay van rate, 20p or so more.
There’s a similar toll bridge over the Manchester Ship Canal which has long queues at times. The locals go out now and then and give them a tenner to let the traffic through for a while.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets