Identification and prioritization of key health hazards to workers in roadway construction

Although various rating systems have been developed to promote sustainable development in roadway construction, sustainability evaluation from the perspective of safeguarding workers' health is currently lacking. Three approaches were used in the study to identify and prioritize key health hazards to workers in roadway construction, including bibliometric analysis, questionnaire survey and analytic hierarchy process (AHP). Bibliometric analysis indicates that submicron particles and polycyclic aromatic compounds are the primary concerns of researchers, and ergonomics also attracts some attention. A questionnaire survey was conducted among construction workers in China. The results suggest that the most frequently encountered occupational disorders by roadway construction workers are musculoskeletal disorders, heat stroke, respiratory health issues and hearing loss, and the most commonly encountered hazards are noise, dust, asphalt fumes, heat stress and some adverse working conditions. Perceptions on associations between the health hazards and disorders were obtained. Although there are some discrepancies between the AHP scores provided by two groups of professionals in China, the commonly agreed top occupational hazards include dust, asphalt fumes, noise, high-/low-temperature stresses and chronic injuries. The findings may be incorporated into rating systems for roadway construction to encourage the industry to adopt better practices for the well-being of workers.