  We present direct measurements of the superconducting order parameter in
nearly optimal FeSe$_{0.5}$Te$_{0.5}$ single crystals with critical temperature
$T_C \approx 14$ K. Using intrinsic multiple Andreev reflection effect (IMARE)
spectroscopy and measurements of lower critical field, we directly determined
two superconducting gaps, $\Delta_L \approx 3.3 - 3.4$ meV and $\Delta_S
\approx 1$ meV, and their temperature dependences. We show that a two-band
model fits well the experimental data. The estimated electron-boson coupling
constants indicate a strong intraband and a moderate interband interaction.
