Today itself the Google Satellite imagery has been updated between SHK and NWD
You can have a look....
.
Look at wena new FOB, Karnauti and upcoming 4 lane flyover, New ROR line will leave Karnauti jn parallel to existing one some space can be seen on left
BEHS...
more... imagery updated too
BEHS SHK line updated but no significant change...
Have a look yourself, lot of things to look for
4 lane NH31
Entire Biharsharif Nawada barh Mokama all updated