Embodiments of the invention comprise apparatuses and methods of manufacturing and installing reinforced concrete structures. The reinforced concrete structures utilize trusses and rebar to form a support structure. A screed guide bar is removeably coupled to the support structure. Concrete is supplied to the support structure, and screeding occurs to form the reinforced concrete structure from the support structure (e.g., rebar mats and trusses) and concrete. The use of trusses and the screed guide bar allow for the formation of a reinforced concrete structure without the need for using spacers and standees to position the mats, or performing position checks to determine the position of the concrete during screeding. The screed bar guide allows workers to quickly form the desired surface of the reinforced concrete structure, remove the screed bar, and fill any void left by the screed bar, as necessary.