Steel Bridge, Portland

The Steel Bridge, a distinctive landmark in Portland, Oregon, stands as a testament to the city's industrial heritage and innovative engineering. This double-deck bridge spans the Willamette River and is unique for its ability to lift both decks independently, making it one of the few of its kind in the world.

Constructed in 1912, the Steel Bridge replaced an earlier bridge of the same name and was designed to accommodate pedestrian, bicycle, automobile, rail, and maritime traffic. Its lower deck serves as a critical link for Portland's light rail and freight trains, while the upper deck carries vehicular traffic and sidewalks for pedestrians and cyclists.

The bridge's design is a marvel of early 20th-century engineering. It employs a vertical-lift mechanism which, rather than using a traditional drawbridge design, lifts the entire span vertically between the bridge's towers. This allows for an uninterrupted flow of river traffic while maintaining a consistent level for rail and road traffic above. The Steel Bridge can rise to a height of 163 feet, ensuring the passage of large ships and barges.

Measuring approximately 211 meters in length, the Steel Bridge is not only a vital transportation artery but also a beloved icon in Portland's landscape. It offers stunning views of the city skyline and is a popular spot for photographers and sightseers alike.

The bridge's robust construction and industrial aesthetic are reflective of Portland's history as a shipping and trade hub in the Pacific Northwest. It has undergone several renovations to maintain its structural integrity and to keep pace with the evolving transportation needs of the city.