New York State Department of Transportation Overhead Sign Structure Inspection

NYSDOT regularly checks roadways and signs for safety. Overhead signs, placed above parts of the road including shoulders, must have enough space for vehicles to pass beneath them safely. These signs, provide the traveling public with clear messages under a variety of conditions, are usually held up by overhead sign structures, which can be of two main types: span structures, supported by posts at both ends and extending horizontally over the road, and cantilever structures, anchored on one end and reaching over the road. Sometimes, overhead signs are supported by cable structures, attached to bridge facades or piers, or other unique arrangements.

GPI has been prime consultant for conducting Overhead Sign Structure Inspection (OSSI) services through multiple multi-year contracts. These projects involve yearly field inspections of over 500 sign support and high mast lighting structures across different regions in upstate New York, including Albany, Binghamton, Buffalo, Hornell, Rochester, Syracuse, and Utica (NYSDOT Regions 1-7 & 9). GPI, its subcontractors, and partners mobilize inspection teams, mobile elevated work platforms, and traffic control equipment needed to inspect structural conditions and inventory overhead signs, high mast lighting, and mast arm structures. They use various testing methods, including visual, tactile, and non-destructive techniques, to assess and rate the structural elements’ compliance with standards. Inspection teams also conduct minor maintenance tasks on-site to prevent costly remobilizations by maintenance personnel. Additionally, GPI is prepared for emergency inspections, such as those following Superstorm Sandy. To minimize lane closure costs and reduce impact on the traveling public, GPI engages in night work and implements live climbing techniques where allowed.