Simplify the following text for a Grade 9 native English-speaking person.
Original: Ongar station remained closed for engineering works and general maintenance and reopened on Sunday 28 May 2006 to passengers , although initially without the use of the station buildings .
Simplified: Ongar station remained closed for engineering works and general maintenance and reopened on Sunday 28 May 2006 to passengers . At first though it was not possible to use the station buildings .