Are there any disadvantages in prestressed concrete?

1. It needs specialized construction machineries like jacks anchorage etc.
2. Advanced technical knowledge and strict supervision is very important.
3. For concrete prestressing, high tensile reinforcement bars are needed which costs greater than generally used mild steel reinforcement bars.
4. Highly skilled labor is needed for prestressed concrete constructions.

Yes 

It require skilled labour ,

Its expensive ,

Skilled superviosn ,

Proper Quality control

Need higher quality materials

More complex technically

More expensive

*needs expertise in design and construction 

*needs many checks to sure that the prestressing action is occured