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Hawthorne Bridge

97204 Portland, OR, United States of America (USA) (Oregon )
Address 358 SW Hawthorne Bridge
 
 
Floor area unfortunately not known yet  
 
Museum typ
Bridges and Tunnels

Opening times

Admission
Status from 03/2017
 Free entry.
Contact Unknown contact data for this museum - please help via contact form.
Homepage
to Location / Directions
Our page for Hawthorne Bridge in Portland, United States of America (USA), is not yet administrated by a Radiomuseum.org member. Please write to us about your experience with this museum, for corrections of our data or sending photos by using the Contact Form to the Museum Finder.
Location / Directions
N45.513204° W122.670937°N45°30.79224' W122°40.25622'N45°30'47.5344" W122°40'15.3732"
Portland is a seaport and the largest city in the U.S. state of Oregon and the seat of Multnomah County. It is in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia Rivers.
Description

From Wikipedia, the free encyclopedia:
The Hawthorne Bridge is a truss bridge with a vertical lift that spans the Willamette River in Portland, Oregon, joining Hawthorne Boulevard and Madison Street. It is the oldest vertical-lift bridge in operation in the United States and the oldest highway bridge in Portland. It is also the busiest bicycle and transit bridge in Oregon, with over 8,000 cyclists and 800 TriMet buses (carrying about 17,400 riders) daily. It was added to the National Register of Historic Places in November 2012.

The Hawthorne Bridge

Carries: Vehicles, pedestrians, cyclists
Crosses: Willamette River
Design: Parker truss with a vertical-lift span
Material: Steel
Total length: 1,382 feet (421 m)
Width: 73 feet (22 m)
Longest span: 244 feet (74 m)
No. of spans: 6 (excluding concrete girder approach spans)
Piers in water: 6
Clearance below: 49 feet (15 m) closed, 159 feet (48 m) open
Opened: December 19, 1910

Statistics

The bridge consists of five fixed spans and one 244-foot (74 m)-long vertical-lift span. It is 1,382 feet (421 m) in total length.
The bridge was originally 63 feet (19 m) wide,[6] including two five-foot sidewalks, but the sidewalks were widened to 10 feet in 1998, increasing the structure's overall width to 73 feet (22 m).
The 880,000-pound (400,000 kg) counterweights are suspended from the two 165-foot (50 m)-tall towers.
While the river is at low level, the bridge is 49 feet (15 m) above the water, causing it to be raised an average of 200 times per month. As of 2001, the average daily traffic was 30,500 vehicles.
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