Vehicle front structure, center-side frame member and method of assembling it

A middle branch frame portion 40 is configured such that a front end portion is connected to a front side frame 1 via a suspension-frame attaching bolt 61 to fasten a suspension frame, a middle portion extends to a tunnel portion 14 that is provided at the center portion in the vehicle width direction so as to project upward, and a rear portion is provided below (vehicle outside) an upper corner portion of the tunnel portion 14 so as to extend along the upper corner portion. Accordingly, there can be provided a vehicle front structure with a pair of front side frames provided at both sides of a vehicle body so as to extend in a vehicle longitudinal direction that can disperse the load properly even when a larger frontal-crash impact load acts.