What is up with the Bihar highways

Recently, went from delhi to gaya for a wedding and I covered around 700km in around 14-15hrs due to expressways, but after reaching bihar the highways entry is so bad, long truck jams, the whole kolwar was blocked. Took around 6hrs for mere 200kms. And this is not the first time, I traveled bihar frequently by road, and the entry is so bad I can’t define. Any route you guys know, where i can skip these jams.