Puri–Kamakhya Weekly Express (via Adra) is an Express train belonging to Northeast Frontier Railway zone that runs between Puri in Odisha and Kamakhya Junction in Assam, via Adra Junction, Siuri.
On the other hand, 15640/ Kamakhya–Puri Express has an average speed of 47 km/h and covers 1520 km in 32h 15m.
The rakes are maintained by Northeast Frontier Railways.
As the route is fully electrified, it is hauled by a Howrah Electric Loco Shed-based WAP-4 Electric locomotive from Puri to Kamakhya Junction and vice versa.
The train is maintained by Northeast Frontier Railway.