Woolpert has developed a fast, efficient, and cost-effective method for field data collection of infrastructure inventory using ruggedized pen-based PCs. The process uses a core database engine, customized with application-specific interfaces and processing routines, and emphasizes verification of data as it is collected. The process involves two principal steps: GPS surveying of point features, and feature attribution. During the first step, a foundation database is created with GPS-determined x,y,z locations and basic external attributes of each structure (such as structure type). Special programs have been developed to automate transfer of the GPS data directly from the receiver and to expedite input of the attributes. Detailed attribution requiring opening of the structure (i.e., inverts and condition) is performed during the second phase, as well as collecting digital photography and adding connecting pipe features. Customized software transfers attribution from structures to pipes as appropriate, creates a spatially related GIS database structure, and employs built-in quality control measures.