Delhi Congress President Ajay Maken on Sunday attacked the Aam Aadmi Party (AAP) government for taking credit in bringing infrastructural developments which were started by his party."Congress conceptualised and built the Signature Bridge. AAP government first delayed the project - now taking the credit. Kejriwal should have respectfully invited Sheila Dikshit and J.P Agarwal - as they were the real architects of this project," Maken told the media.