A boom structure for a mobile agricultural implement. The boom structure includes a first transversely extending beam member having a first protrusion. The boom structure includes a second transversely extending beam member having a second protrusion. The second transversely extending beam member is spatially offset from the first transversely extending beam member. A plurality of first coupling members are connected to the first protrusion and a plurality of second coupling members connected to the second protrusion. A plurality of connecting members are connected to the first and second coupling members to connect the first and second transversely extending beam members.