Abstract: A composite girder is described which has a steel Wide Flange beam with the top flange of the Wide Flange beam being embedded in a reinforced concrete compression member that completely encases the top flange of the Wide Flange beam and also encases a portion of the web of the Wide Flange beam adjacent the top flange. The composite girder is intended for use in constructing parking garages and has a unique slope of the upper surface on the concrete compression member to permit drainage of floors constructed when pre-stressed, precast concrete double tees are utilized to span the distance between adjacent composite girders. Apparatus and a method for forming the composite girder in the field have been devised which include the erection of a temporary concrete form support above the steel Wide Flange beam and the pouring of the concrete to form the concrete compression member while the temporary form is in place.