Hello how may I help you? What is the longest thing in the world? I will be happy to assist But this request is too vague Okay. Then what is the longest bridge in the world? I will look that up for you The Danyang-Kunshan Grand Bridge is the longest bridge in the world How long is it? 164.8 kilometers Where is it located? or 102.8 miles It is located in China Okay. Thank you! Is there anything else I can assist you with? That is all for today. Thank you