Ep 13. Oakland Bay Bridge

Modern Marvels season 6 episode 13 details the construction of the Oakland Bay Bridge, an impressive engineering feat that connects Oakland to San Francisco. The episode showcases the history of the bridge, from its initial design to its completion in 1936, as well as its recent reconstruction to withstand earthquakes.

The construction of the bridge was a massive project that involved the work of thousands of workers. The documentary takes a close look at the construction process, which was marked by many obstacles. The builders faced challenges such as strong tidal currents, underwater landslides, and even a worker strike. However, despite these setbacks, the bridge was completed on time and within budget.

One of the most impressive feats of the bridge's construction was the use of new welding techniques. In the 1930s, welding was a relatively new technology, but the builders of the Bay Bridge quickly recognized its value. The documentary details how welding was used to create the bridge's large steel beams, which were then connected together to form the massive structure. The welding process was considered so innovative at the time that it was featured in national news coverage.

The episode also delves into the bridge's importance to the San Francisco Bay Area. The bridge is a major transportation route, and it has played a critical role in the region's economic development. The documentary details how the bridge was responsible for opening up new areas of the Bay Area for development, as well as how it has contributed to the growth of the region's shipping and trade industries.

However, despite the bridge's importance, it was not designed to withstand earthquakes. In the 1989 Loma Prieta earthquake, a section of the bridge collapsed, killing one person and injuring many others. The episode details the subsequent efforts to rebuild the bridge to withstand earthquakes, including the use of new materials and construction techniques.

Overall, Modern Marvels season 6 episode 13 provides an in-depth look at one of America's most impressive engineering feats. From the bridge's initial design and construction to its rebirth in the wake of a major earthquake, the episode showcases the determination and innovation of the people who built and maintain this important transportation hub.