Spanning the new Bridge Street underpass overlooking the southbound A167 into Newcastle, CityScreen Newcastle Central is an LED screen measuring 14 metres by 3.5 metres.
The screen, which the company claims will be the largest in the North East and will be seen by three million motorists each month, opens in September.
In keeping with all its digital screens, Forrest Media will power its latest build in Newcastle using energy generated by hydro-electricity.
Marc Keenan, the managing director Forrest Media, said: "We have fought off stiff competition for this sought-after location, which was introduced by Wildstone on behalf of Newcastle City Council.
"By developing this new screen, Forrest is making a clear statement that we want to be more than a Scottish success story, we want to be the premier operator in the north."