Table 2 Examples of state DOT road inventory programs
State DOT | Inventory techniques | Inventory data | |
|---|---|---|---|
Collection | Storage | ||
Washington | Photo log, integrated GPS/GIS mapping systems | GIS | Cable barriers, concrete barriers, culverts, culvert ends, ditches, drainage inlets, glare screens, guardrails, impact attenuators, miscellaneous fixed objects, pipe ends, pedestals, roadside slope, rock outcroppings, special-use barriers, supports, trees, tree groupings, walls |
Michigan | Integrated GPS/GIS mapping systems, field inventory | GIS | Guardrails, pipes, culverts, culvert ends, catch basins, impact attenuators |
Ohio | Photo log, integrated GPS/GIS mapping Systems | GIS | Wetland delineation, vegetation classification |
Iowa | Airborne LiDAR, aerial photography | GIS | Landscape, sloped areas, individual counts of trees, side slope, grade, contour |
Idaho | Video log | MS Access | Guardrails |
Tennessee | Tennessee Road Information Management System (TRIMS), Maintenance Management System (MMS) | Central Database | Traffic signs, guardrails, and pavement markings which are manually collected. |
New Mexico | Photo, Laser Scanner, and Virtual Reality System | Video | Most types of visible highway assets except for light posts and road detectors |
Virginia | Web-based asset management system using Google Maps | Google Maps | Cross pipes, ditches |
FHWA Baltimore-Washington Parkway | Mobile mapping | Point Cloud Software, GIS | Corridors, signs |