Second Tacoma Narrows

Location: Pierce County, Washington

Owner: Washington State DOT

Completed: 2007

Your Title Goes Here

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Your Title Goes Here

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Your Title Goes Here

Your Title Goes Here

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Mr. Kumarasena led an independent design check for the Second Tacoma Narrows Bridge. The suspended superstructure for this bridge includes a 2,800-ft main span, 5,979-ft-long, and a 78-ft-wide bridge deck consisting of a space truss with the orthotropic deck forming part of the top chord. The independent design included main span and approach span trusses, hangers, and hanger connections. In addition, it included a completely independent analysis of the entire bridge system considering permanent loads and live loads including wind, temperature, and seismic. The bridge is designed to accommodate the future placement of a second, lower roadway through the stiffening truss. The bridge was designed considering this future live loading as well. The roadway is more than 200-ft above the river high-water elevation.