  Augmented Reality (AR) is a technology superimposing interactional virtual
objects onto a real environment. Since the beginning of the millennium, AR
technologies have shown rapid growth, with significant research publications in
engineering and science. However, the civil infrastructure community has
minimally implemented AR technologies to date. One of the challenges that civil
engineers face when understanding and using AR is the lack of a classification
of AR in the context of capabilities for civil infrastructure applications.
Practitioners in civil infrastructure, like most engineering fields, prioritize
understanding the level of maturity of a new technology before considering its
adoption and field implementation. This paper compares the capabilities of
sixteen AR Head-Mounted Devices (HMDs) available in the market since 2017,
ranking them in terms of performance for civil infrastructure implementations.
Finally, the authors recommend a development framework for practical AR
interfaces with civil infrastructure and operations.
