A boom structure (40) for a mobile agricultural implement (10). The boom structure (40) comprises a first transversely extending beam member (45, 50) comprising a first protrusion (55, 60) and a second transversely extending beam member (75, 80) comprising a second protrusion (85, 90), wherein the second transversely extending beam member (75, 80) is spatially offset from the first transversely extending beam member (45, 50). A plurality of first coupling members (120) is coupled to the first protrusion (55, 60). A plurality of second coupling members (170) is coupled to the second protrusion (85, 90). A plurality of connecting members (220) is coupled to the first and second coupling members (120, 170) to connect the first and second transversely extending beam members (45, 50, 75, 80).
