Connecting splice member for wire cable tray portions, said wire cable tray comprising, firstly, longitudinal warp wires (40, 40') and, secondly, transverse weft wires in such a way as to define a gutter having a bottom which is delimited by two side walls, said splice member comprising a first branch (2; 102; 202) extending in a first transverse direction which is intended to be horizontal, and a second branch (4; 104; 204) extending in a second transverse direction which is substantially perpendicular to the first transverse direction, the second branch (4; 104; 204) thus being intended to be substantially vertical and arranged above the first branch (2; 102; 202), - the first branch (2; 102; 202) having: support means (6; 116; 206) which are intended to cooperate with at least one warp wire (40, 40') of each cable tray portion, and at least two lateral stops (17; 110; 254), - the second branch (4; 104; 204) having: support means (26; 126; 258) which are intended to cooperate with at least one warp wire of each cable tray portion, and at least two lateral stops (31; 131; 252), longitudinal spacing means (16, 48; 119; 250), which are arranged between the lateral stops (17; 110; 254) and make it possible to separate two end weft wires, being provided on at least one of the branches (2, 4; 102, 104; 202, 204), characterized in that the two branches are interconnected by a resilient hinge region having a substantially longitudinal axis, and the second branch (4; 104; 204) has at least one boss extending substantially horizontally. - the first branch (2; 102; 202) having: support means (6; 116; 206) which are intended to cooperate with at least one warp wire (40, 40') of each cable tray portion, and at least two lateral stops (17; 110; 254), support means (6; 116; 206) which are intended to cooperate with at least one warp wire (40, 40') of each cable tray portion, and at least two lateral stops (17; 110; 254), - the second branch (4; 104; 204) having: support means (26; 126; 258) which are intended to cooperate with at least one warp wire of each cable tray portion, and at least two lateral stops (31; 131; 252), longitudinal spacing means (16, 48; 119; 250), which are arranged between the lateral stops (17; 110; 254) and make it possible to separate two end weft wires, being provided on at least one of the branches (2, 4; 102, 104; 202, 204), characterized in that the two branches are interconnected by a resilient hinge region having a substantially longitudinal axis, and the second branch (4; 104; 204) has at least one boss extending substantially horizontally. support means (26; 126; 258) which are intended to cooperate with at least one warp wire of each cable tray portion, and at least two lateral stops (31; 131; 252), longitudinal spacing means (16, 48; 119; 250), which are arranged between the lateral stops (17; 110; 254) and make it possible to separate two end weft wires, being provided on at least one of the branches (2, 4; 102, 104; 202, 204), characterized in that the two branches are interconnected by a resilient hinge region having a substantially longitudinal axis, and the second branch (4; 104; 204) has at least one boss extending substantially horizontally.