GIS Implementation for Managing Construction Work Zones in the Right-of-Way: A Case Study of Seattle

Abstract: The rapid urban development in Seattle has significantly increased construction activities within the right-of-way (ROW), leading to the emergence of widespread construction work zones (CWZs). These zones can cause numerous disruptions, including traffic congestion, road closures, noise pollution, and safety concerns for both motorists and pedestrians. Effective management of these impacts is critical to protecting the mobility, safety, and economy of local communities. In 2017, the Seattle Department of Transportation (SDOT) adopted dotMaps, a Geographic Information System (GIS)-based tool, to improve the coordination and management of construction activities in the ROW. Since its adoption, the tool has enabled SDOT to exercise finer control over the city’s CWZs while facilitating improved coordination among contractors and utility companies that regularly work in the ROW. Previous studies pertinent to GIS adoption focused mainly on internal agency use, with limited exploration of its role as a communication platform and strategies for external stakeholder engagement. This study examines the early implementation phase of dotMaps at SDOT, investigating the key factors contributing to a smooth deployment. Data were collected through direct observation of SDOT’s CWZ management processes, interviews with key stakeholders, and analysis of primary documents. The findings outline and analyze these factors, including training, management approach, and strategies for external stakeholder engagement, offering insights for other transportation agencies seeking to implement GIS for CWZ management. This paper contributes to the ongoing discourse on leveraging GIS technology to optimize CWZ management and improve coordination in ROW utility and construction projects.