Specifications include, but are not limited to: It is the intent and purpose of these specifications to describe a vehicle to provide underbridge inspection capabilities by positioning workmen and their tools approximately 42' horizontally under a bridge to perform maintenance tasks. With the platform completely extended, the truck can be driven slowly forward or backward to provide continuous or overlapping areas of coverage. The vehicle must operate within 8'-6" of the traffic lane so that lane closures are kept to a minimum. The vehicle shall be an under-bridge maintenance vehicle and will include a truck chassis, flatbed body, aerial device, and any necessary equipment, components, accessories required to furnish a complete unit ready for operation. The aerial unit shall be truck-mounted, hydraulic-powered with three (3) articulating boom sections, two rotation turrets, and a maneuverable 600 pound capacity aluminum platform with fully proportional controls. The construction and stability of the completed unit shall conform to all applicable requirements of the current ANSI 92.8 regulations.