Specifications include, but are not limited to: GENERAL: It is the intent of this specification to describe a trailer mounted under bridge inspection unit. The purpose of this unit will be to provide access for inspection and repair below bridge decks. Unit shall be operational within a single lane, not requiring additional lane closure. Service and parts shall be available within 48 hours as described under “Service and Repair”. Unit shall be manufacturer’s latest current production model. Materials shall be free from defects that adversely affect the function or appearance of the finished units and shall meet the following minimum specifications: PLATFORM: The platform shall have a load capacity of 1,000 pounds with load sensing system to prevent overloading. PLATFORM ACCESS: The vertical platform access/egress shall be enclosed. PLATFORM WIDTH: Interior platform width must be at least 30 inches. PLATFORM ROTATION: Platform must be capable of rotating 180°. OUTSIDE TOWER & PLATFORM: The platform shall have an under the bridge drop depth of at least 17 feet.