We fabricated InxGa1-xAs strained quantum wire structures with various In compositions using a selective-area metal-organic chemical vapor deposition growth technique. Photoluminescence (PL) measurements at 14 K demonstrated that strained quantum wires of high quality were obtained when x is less than 0.35. Change of the full width at half-maximum of the PL peaks indicates that the structural dimensions of the quantum wires exceeded the critical thickness at around x = 0.4.