The Causeway/border mystery has been resolved. The Causeway is open. But the reason why there has not been much cross-border traffic is because crossing is now expensive–to get into Bahrain, you need a Covid-19 test. The cost of testing in Saudi is SAR 850 ($226). If your lab isn’t on the list, you have to repeat the test in Bahrain at a cost of 60 BD ($160). In Bahrain, you’re supposed to self-quarantine for 24 hours, but if you have a positive test, they’ll come and get you for mandatory quarantine. Test results are only good for 48 hours, which means you’ll have to be tested going back. Family of 4? Four tests, no discounts. This means that casual day trips or weekend trips are no longer practical.