Nanotechnology has been one of the promising fields in the 21st century for many research areas and applications such as chemistry, material science, electrical, environmental, and medical applications. One important branch of this technology is the manufacturing and processing of nanocomposites including ceramic, metal, or polymer-based matrix nanocomposites. Carbon nanotubes (CNTs) were discovered in 1991 and were identified as an extraordinary nanomaterial due to their exceptional intrinsic mechanical, thermal, and electrical properties. Since their discovery, CNTs have been targeted for various applications such as structural nanocomposites, electrically and thermally conductive plastics, air/water filtration, and several other biomedical and energy storage applications. This presentation will discuss an overview for the potential use of CNTs in structural composites for infrastructure applications. Methods and key challenges associated with dispersing CNTs and manufacturing CNTs nanocomposites will be presented. The benefit of introducing CNTs in the performance of fiber composite materials such as tension, shear, fatigue, bond, creep, fracture toughness and impact will be discussed. Furthermore, the presentation will also report work related to the use of CNTs in cementitous materials along with the associated nanoscale testing methods. Finally, future trends and opportunities for the use of CNTs in structural health monitoring and infrastructure applications will be highlighted.