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Crossing Willamette River in Portland, Oregon

The Steel Bridge is a through truss, double lift bridge across the Willamette River in Portland, Oregon, United States. Its lower deck carries railroad and bicycle/pedestrian traffic, while the upper deck carries road traffic (on the Pacific Highway West No. 1W, former Oregon Route 99W) and light rail (MAX), making the bridge one of the most multimodal in the world. It is the only double-deck bridge with independent lifts in the world and the second oldest vertical-lift bridge in North America, after the nearby Hawthorne Bridge. The bridge links the Rose Quarter and Lloyd District in the east to Old Town Chinatown neighborhood in the west. The lift span of the bridge is 211-foot (64 m) long. At low river levels the lower deck is 26 feet (7.9 m) above the water, and 163 feet (50 m) of vertical clearance is provided when both are raised. Because of the independent lifts, the lower deck can be raised to 72 feet (22 m), telescoping into the upper deck but not disturbing it. Each deck has it own counterweights, two for the upper and eight for the lower, totaling 9,000,000 lb (4,100 metric tons). The machinery house is above the upper-deck lift span with an operator's room suspended below the house so that the operator can view river traffic as well as the upper deck. <a href="http://en.wikipedia.org/wiki/SteelBridge" rel="nofollow">en.wikipedia.org/wiki/SteelBridge</a>

<a href="http://locoslococo.wordpress.com" rel="nofollow">This Image also appears in my new 'Flickr' photo blog<b>'Amtrak train Routes'</b></a>

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Photo details

  • Uploaded on March 2, 2012
  • Attribution
    by Loco Steve
    • Camera: NIKON CORPORATION NIKON D3000
    • Taken on 2011/07/15 20:14:36
    • Exposure: 0.033s (1/30)
    • Focal Length: 46.00mm
    • F/Stop: f/5.300
    • ISO Speed: ISO200
    • Exposure Bias: 0.00 EV
    • No flash