Fremont Bridge (Portland, Oregon)

Fremont Bridge
Coordinates45°32′16″N 122°40′57″W / 45.5377083°N 122.6825027°W / 45.5377083; -122.6825027
CarriesFour lanes, two decks
I-405 / US 30
CrossesWillamette River and surface streets
LocalePortland, Oregon
Official nameFremont Bridge
Maintained byOregon Department of Transportation
ID number02529
Characteristics
DesignTied-arch bridge
Total length2,154 feet (657 m)
Height381 feet (116 m)
Longest span1,255 feet (383 m)
longest in Oregon
Clearance above18.3 feet (5.6 m)
Clearance below175 feet (53 m)
History
OpenedNovember 15, 1973
Location

The Fremont Bridge is a steel tied-arch bridge over the Willamette River located in Portland, Oregon, United States. It carries Interstate 405 and US 30 traffic between downtown and North Portland where it intersects with Interstate 5. It has the longest main span of any bridge in Oregon and is the second longest tied-arch bridge in the world (after Caiyuanba Bridge across the Yangtze River, China). The bridge was designed by Parsons, Brinckerhoff, Quade and Douglas, and built by Murphy Pacific Corporation. In 2006, Sharon Wood Wortman published the third and latest version of The Portland Bridge Book. This book provides even more detail about the Fremont Bridge than covered here.

The bridge has two decks carrying vehicular traffic, each with four lanes. The upper deck is signed westbound on US 30 and southbound on I-405. The lower deck is signed eastbound on US 30 and northbound on I-405.