The conversation between human and AI assistant.
How are bridges built?
That's really interesting. How long does it usually take to build a bridge?
That can vary widely depending on the size and complexity of the bridge, as well as other factors like weather and available resources. However, most bridges take at least a few months to construct, while some larger or more complicated projects can take several years. For example, the Golden Gate Bridge in San Francisco took more than four years to build and employed thousands of workers.