To reduce the carbon footprint of concrete structures in the built environment, textile-reinforced concrete (TRC) offers a promising solution. TRC uses non-corrosive fibers, such as carbon or glass, instead of traditional steel reinforcement, thereby reducing the required concrete cover and, consequently, the overall concrete volume. With less concrete cover, slender, structurally efficient elements such as I-beams can be manufactured. However, producing such TRC elements is often labor-intensive and requires complex formwork. To address this challenge, this study focuses on integrating prefabricated shear webs to simplify the manufacturing process. Instead of casting all elements in a single cast, they are cast in multiple stages using simpler formworks. The present experimental study compares the behavior of single-cast TRC beams in a 4-point bending test setup with that of TRC beams manufactured using prefabricated shear webs. The latter are tested both with and without galvanized steel pins at the web-to-flange interface to enhance dry connections. The results of the test showed that the precast shear webs I-beams have a slightly lower stiffness and ultimate strength than single cast beams, reaching 95% and 89% of the single cast element’s ultimate failure load for the case with and without pins, respectively. All specimens tested failed by web shear when the diagonal compression strut between cracks crushed.