Marquam Bridge
Carries Interstate 5 traffic over the Willamette River in Portland, Oregon / From Wikipedia, the free encyclopedia
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The Marquam Bridge /ˈmɑːrkəm/ is a double-deck, steel-truss cantilever bridge[1] that carries Interstate 5 traffic across the Willamette River from south of downtown Portland, Oregon, on the west side to the industrial area of inner Southeast on the east. It is the busiest bridge in Oregon, carrying 140,500 vehicles a day as of 2016.[2] The upper deck carries northbound traffic; the lower deck carries southbound traffic. The Marquam also has on and off ramps for Interstate 405 on the south end of the bridge, while the terminus on the east bank of the river is near the interchange with Interstate 84.
Quick Facts Coordinates, Carries ...
Marquam Bridge | |
---|---|
Coordinates | 45.5079°N 122.6690°W / 45.5079; -122.6690 |
Carries | I-5 |
Crosses | Willamette River |
Locale | Portland, Oregon |
Maintained by | ODOT |
ID number | 08328 |
Characteristics | |
Design | Cantilever truss |
Total length | 1,043 feet (318 m) |
Width | 57 feet (17 m) |
Longest span | 440 feet (130 m) |
Clearance above | <35 feet (11 m) northbound |
Clearance below | 130 feet (40 m) |
History | |
Opened | October 1966 |
Location | |
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