I happened to drive from Kolkata, West Bengal to Ranchi, Jharkhand for a weekend trip, a total of approx 410 Kms. Upon researching and hearing from fellow travelers, I along with my wife, 2 kids, aged 4 & 10 months old, set off from our home towards Ranchi, via Jamshedpur route. There is another route via Dhanbad, which is slightly longer.
The roads are fantastic to say the least. Well maintained, no potholes. There are some places where the culverts meet the bridges connecting the roads, which are a bit uneven and causes a lot of jerk. Apart from this, there is no difficulty in driving. You will come across 5 toll plazas throughout and an approx. amount of Rs. 550 to be paid towards tolls.