Hello ,

The best government polytechnic institutions that offers civil engineering which you can join after ssc are

• Government Polytechnic , Pune

website : https://gppune.ac.in/userindex.php

• Government Polytechnic ,Thane

website : https://gpthane.org.in/

• Government Polytechnic , Nagpur

website : https://www.gpnagpur.ac.in/gpnagpur_new/

• Government Polytechnic, Aurangabad

website : https://www.gpabad.ac.in/

Annual fees : 7750 only

you can also look other top diploma civil engineering  course offering colleges like

• KIIT Polytechnic, Bhubaneswar
• Netaji Subhas Institute of Technology, Patna
• Noida International University
• KJ Somaiya Polytechnic, Mumbai
• JDT Islam Polytechnic College, Kozhikode

Hope this helps you

best wishes for your future

• Government Polytechnic College, Perinthalmanna
• Jamia Milia Islamia, New Delhi
• Lovely Professional University, Phagwara
• Maharaja Sayaji Rao University of Baroda
• Dev Bhoomi Institute of Polytechnic, Dehradun