Traveling to Saudi through causeway from Bahrain

Hi,

I am a resident in Bahrain, Indian citizen, having own car, want to go Saudi for 3 days visit to my relatives, anybody direct me what are the procedures and what documents I should hold with me.

This has been answered many many times - next time use search.

1) Saudi visa
2) Vaccination record.  If you have taken Sinopharm, then you should have booster dose (Pfizer or Astra).  This needs to be registered on Saudi muqeem portal in advance
3) PCR test within 72 hours of entry into Saudi

I would add:
Car insurance to cover Saudi side of Causeway for x no. of days. It can be bought from from Aljasr or eTraffic app (cheaper and convenient)

And changing one thing:

PCR test within 48 hours of entry or rapid test.