Just after 3pm Conroe Police responded to a reported vehicle vs pedestrian crash on I-45 southbound immediately north of South Loop 336. Units responded and found the male to be deceased on the scene. At this time all main lanes are back open. Freeway traffic is backed up to SH 105, however, the feeders are moving extremely slow. Freeway speeds are almost back to normal at South Loop 336. We will update when additional information is available.