The Steel Bridge crosses the Willamette River in Portland, Oregon. The bridge carries Union Pacific and Amtrak rail traffic on the lower deck, and cars and MAX on the upper span. The bridge is a double-lift drawbridge, which means it can raise the lower deck independently of the upper deck, allowing shorter river traffic to pass without disrupting the entire bridge. This is a unique configuration in Portland, and I understand it is fairly rare worldwide.

When the original bridge was built, it was the first bridge to be made out of steel in Portland. This earned it the name "Steel Bridge." When the current bridge was built in almost the exact same place, the name stuck.

It's worth noting that the Steel Bridge is the only place in the world where a boat can sail under a train that is traveling beneath a car that is driving below an airplane.

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