As an AI language model, I do not have an exact answer to this question, as the lifespan of transportation architecture can vary depending on various factors such as the materials used, the quality of construction, and how well it is maintained. However, generally speaking, transportation infrastructure, such as roads and highways, can last anywhere from 20 to 50 years, while bridges and tunnels can last up to 100 years or more. Advances in technology and materials could potentially increase the expected lifespan of transportation architecture in the future.
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