The Hernando de Soto Bridge (I-40) between Memphis, TN and West Memphis (AR) was actually retrofitted for the possibility of an earthquake a number of years ago.
I was actually referring to buildings. Once they’re up, they’re up. Regardless, even a retrofitted bridge is going to suffer some damage if the quake is strong enough.
Is that the bridge that collapsed several years ago, causing some deaths? I know it was I-40, and in Arkansas.