It has been 100 years in the making but passengers will finally be able to catch a train from the Redcliffe Peninsula to the heart of Brisbane within six months.

A photograph taken on December 3, 2010, shows where this final successful attempt started five years ago.

Where the Petrie to Kippa Ring Rail line began in December 2010. Then-prime minister Julia Gillard signs a three-level government agreement with then-premier Anna Bligh and Moreton Region mayor Allan Sutherland. Credit:Tony Moore

It shows then-prime minister Julia Gillard signing an agreement with Moreton Bay Regional Council mayor Allan Sutherland and then-premier Anna Bligh.

The federal government agreed to contribute $742 million, the Queensland Government $300 million and Moreton Bay Regional Council $105 million to the project.