Yes, they have opened it recently.
You can drive straight to the temple. Don't take outer ring road.
Once you cross the temple, right turn is blocked ( towards Prakasam barrage)
Driver further ahead and take a u-turn.
Avoid google maps in Vijayawada, it is a mess. Learnt lesson after missing the routes multiple times. Just follow the orientation.
It is around 40 kilometres shorter according to Google maps,
Drive time difference is 10 minutes.
Piduguralla route is good, but not ideal for high speed cruising.
Too many things happening on the NAM expressway. It is not elevated highway, like Suryapet section.
There are too many village crossing, bikes and animals on highway.
Last 60 kilometers is a mess.
Only advantage? Vijawayada traffic can be avoided.
Now the temple route is accessible, crossing Vijayawada using Prakasam barrage is easy.