To provide a woven preform having an integrally woven three-dimensional central portion with laminated lug ends comprising independent woven layers.

The woven preform is used to reinforce a composite structure which includes a central portion having a plurality of interwoven layers. The preform includes first and second end portions having a plurality of independent woven layers which are integrally woven with the plurality of interwoven layers in the central portion and which extend along the entire length of the preform. Bias layers are inserted between the plurality of independent woven layers in the first and second end portions.