This bridge was built to connect Liverpool and London by shortening the journey which before entailed a change of train at Warrington. This is commemorated by the Arms of London being shown on the Runcorn side of the bridge, the figure of Britannia on the central support and the Arms of Liverpool on the Widnes side.
This view is from the west side of the bridge with Runcorn on the opposite bank. The transporter bridge had not been built at this time

The message reads:-
Friday 25th. 34 York Street, Runcorn
Dear Miss Hope
We are coming by Crosville bus tomorrow. Start from here at 10a.m. arrive there at 12.45.
Talbot Rd. We are looking forward to coming again. Love to all
Mrs Dugdale