A truss section (2, 3, 4), which is configured to support at least one tread element in a passenger area (30) of a passenger conveyor (15) of the type conveying passengers by moving the at least one tread element in a longitudinal direction along the passenger area (30) between a first landing and a second landing, comprises at least two longitudinal elements (5a, 5b) extending basically parallel to each other in the longitudinal direction; and at least one lateral connector (6) connecting the at least two longitudinal elements (5a, 5b). Each of the at least two longitudinal elements (5a, 5b) includes at least one load-bearing portion (51, 52, 53) having the configuration of a single wall profile.