Study of the hydraulic jump features was the interest of different researchers and engineers over the past decades. This phenomenon has been studied extensively with respect to its performance in energy dissipation through the hydraulic structures. A free hydraulic jump involves of a rapid transition from super- to subcritical flow. According to the generation of rollers and oscillatory nature of the jump, air is entrained in to the water during the jump making the hydraulic jump to be a complicated bubbly two-phase flow. The volume of air entrainment increases by increasing the supercritical approach flow Froude number. With respect to the special characteristics of hydraulic jump, special hydraulic structures including stilling basins, plunge pools and etc. are needed to restrain this phenomenon. Considering the unfavorable characteristics of hydraulic jump, recently laboratory efforts and analytical studies have been performed to investigate the flow behavior during transition from super- to subcritical flow with a special transition structure without the hydraulic jump. Due to the lack of detailed information about the flow characteristics downstream of the transition structure, the objective of the present study is investigation of the flow structure and turbulent characteristics of flow during the transition from super- to subcritical while the hydraulic jump is omitted. An acoustic Doppler velocimeter was used to measure the mean 3D velocities, turbulent intensities, Reynolds shear stresses and turbulent kinetic energy under different situations along the centerline of the channel downstream of the transition structure. For this purpose seven upstream approach flow Froude number, ranging from 2.17 up to 3.38 were considered. The sampling frequency and sampling time were set to 200 Hz and 2 min, respectively. According to results of former investigations on omission of hydraulic jump using the transition structure, each transition structure is capable of omitting jump with a certain upstream Froude number. To check the validity of this hypothesis, a complimentary experimental/analytical study was also performed to investigate whether is a transition structure able to omit the hydraulic jump for a wider range of upstream supercritical flow Froude numbers? To investigate this subject analytically, two codes were written in Matlab ® 7.1(R2010 a) software. The first code determines the flow characteristics e.g. Froude number wherein the hydraulic jump is eliminated for a given transition structure. The second code calculates the water free-surface profile over the transition structure considering a given upstream approach flow depth. Finally analytical results were compared with those of model experimentation. Results show that turbulent intensities and Reynolds stress downstream of the transition structure are decreased significantly if the hydraulic jump is omitted by the transition structure compared with those of generating a hydraulic jump. Furthermore, the maximum values of mean velocity profiles occur close to the water free surface just after the transition structure. By increasing the distance from the transition toe towards the downstream the velocity profiles gradually deform to the prevailing velocity profile of a fully-developed open channel flow. It was also found that for a given upstream approach flow Froude number the designed transition structures are capable of omitting the hydraulic jump for wide range of upstream approach flow depths and vice-versa.