A bleacher system has a support structure that includes multiple cross members at spaced intervals, but includes no longitudinal rails. The support structure further includes an axle carrier sub-frame mounted between two of the cross members. One or more tiers are mounted on the support structure. Each tier includes multiple girders at spaced intervals, each girder supporting a plurality of seat supports and a plurality of foot board supports, with seat planks or seats then secured to the seat supports and foot planks secured to the foot board supports in each tier. The bleacher system may be provided with front and/or rear jacks for use when the bleacher system is in a deployed position. The bleacher system may also include a hitch tube to facilitate attachment to a vehicle when the bleacher system is in a transport position.