Hawthorne Bridge

River mile: 13.1

Opened: December 19, 1910; precursors, 1891 & 1900

Type: steel through truss (Parker), vertical lift

Main Span Length: 244 feet

Center Height to Water: 49 feet

Vertical Lift: 110 feet

Horizontal Clearance: 230 feet

Outside Width: 73 feet (four traffic lanes, with two 10 foot sidewalks)

Color: green with red trim

Cost: $500,000 ($21 million for 1998-99 rehabilitation)

Owner: Multnomah County

Engineer/Designer: Waddell & Harrington, Kansas City, Missouri

Access: pedestrians, bicycles allowed

Bridge Opening Signals audible: one long, four short; radio frequency: KTD 521

Average Daily Traffic: 30,500

Historic American Engineering Record OR-20 and Addendum