Initially, it will be a Llangollen to Berwyn shuttle service which will run using the diesel railcars operating Fridays to Sundays.
This Friday the railway will run two evening trains to coincide with the illumination of the Castle Street bridge over the river Dee.
All services will be using diesel multiple units (DMUs) provided by Llangollen Railcars.
LRT chairman Pete Edwards said: "Llangollen Railway are delighted to be able to return to operation with a limited service to Berwyn on Friday 9th.
"This is the result of a massive effort by volunteers at the railway and is also indicative of the significant support we've had from agencies and elected representatives.
"There is much more to do before we are running along the full length of the line but we hope this marks the beginning of a new chapter in the story of our railway and its place in the Dee Valley."