Eucalyptus bridgesiana is a tree that typically grows to a height of and forms a
lignotuber. It has rough, fibrous, mottled grey and white, sometimes
tessellated bark on the trunk and larger branches, with rough, grey, fibrous bark on its trunk and larger branches. Thinner branches have smooth grey bark with whitish patches, shed in short ribbons. Young plants and
coppice regrowth have
sessile, egg-shaped, heart-shaped or almost round leaves arranged in opposite pairs, long, wide, with wavy edges and covered with a powdery white bloom. The adult leaves are lance-shaped, the same glossy green on both sides, long and wide on a
petiole long. The flower buds are arranged in groups of seven on a
peduncle up to long, the individual buds on a
pedicel long. Mature buds are normally oval, long and wide with a conical to beaked
operculum. Flowering occurs from February to March and the flowers are white. The fruit is a woody, hemispherical
capsule, long and wide with the three valves extending above the rim. ==Taxonomy and naming==