(Photo credit: enr.com)
Project Officially Completed February 27, 2012.
Download DBA Project Summary Sheet – JJA Bridge
Dapp, S.D. and Brown, D.A. (2010). “Evaluation of Base Grouted Drilled Shafts at the Audubon Bridge”, GeoFlorida 2010, Advances in Analysis, Modeling and Design, Geotechnical Special Publication No. 199, ASCE, pp1553-1562.
Geo-Florida 2010 presentation by Dr. Steve Dapp.
Project Status: Completed.
Project Websites: Project Home Page.
DBA Client: Audubon Bridge Constructors Joint Venture, a joint venture of Flatiron Construction, Granite Construction and Parsons Transportation Group.
DBA Services: DBA performed geotechnical engineering and design of the drilled shaft foundations for the main bridge piers and the high level approach spans. Other services included:
- QA review of the geotechnical reports for the pile supported approach bridges
- Developing and analyzing the drilled shaft load test plan
- Geotechnical engineering consulting during trial shaft installation
- Geotechnical engineering consulting during production shaft construction
Project Highlights: The John James Audubon Bridge is a new Mississippi River crossing between Pointe Coupee and West Feliciana parishes in south central Louisiana, replacing an existing ferry service. The project includes 12 miles of roads and 8 bridges – 7 approach structures and the main structure over the river. The seven approach bridges are supported on driven prestressed precast concrete (PCC) piles. The river bridge has 4 lanes and is almost 2.5 miles long with prestressed PCC pile supported low level approaches, drilled shaft supported high approaches, and the longest cable-stayed main span in North America. The cable-stayed span is supported by two main piers in the Mississippi River. Each pier has twenty 8-foot diameter tip grouted drilled shafts as its foundation system.
Project Websites: Project Home Page. Project Updates.
Media Links: ENR.com January 9, 2008
Owner: Louisiana Department of Transportation and Development
Program Manager: Louisiana TIMED Program
Audubon Bridge Constructors, a joint venture of:
Parsons Transportation Group, Flatiron Construction Corporation,
Granite Construction, Inc.
Dan Brown and Associates, LLC and PSI, Inc.