May 5, 2014 09:00 ET

Results of 22nd Annual National Timber Bridge Competition Announced;


BROOKHAVEN, MS -- Southwest Mississippi Resource Conservation and Development Council, Inc. today announced the results of its 22nd annual National Timber Bridge Design Competition.

Eleven teams of students from universities across the United States matched wits in the recently completed 2014 National Timber Bridge Design Competition. Open to student chapters of American Society of Civil Engineers (ASCE) and Forest Products Society (FPS), the competition is sponsored by Bell Structural Solutions, a division of Bell Lumber & Pole Company (www.blpole.com), Minnesota. Southwest Mississippi Resource Conservation and Development (RC&D), Inc., coordinates the annual competition.

Each team designed, constructed and tested their bridges on their home campus, then submitted documentation of their activities and results to a panel of judges for review. The competition is conducted online via the Internet. Each team is required to post design drawings, test results, and project highlights on the web at http://www.msrcd.org/timberbridge

Winner of the Best Overall Design Award was Oklahoma State University ASCE teamís arch bridge. This entry also placed second in Most Aesthetic.The second place winner in Best Overall Design was Oklahoma State University ASCE teamís truss bridge. Their entry also placed third in both Most Aesthetic and Most Practical.

One of four entries from San Francisco State University ASCE, one with an elaborate deck suspended by twin arches, placed first in Most Aesthetic Bridge and also performed well, placing first in Best Support Structure. Oregon State University ASCE captured first in Most Practical Design. The final first place award went to the ASCE entry from Mississippi State University for Best Deck. That entry also placed third in Best Support Structure.

Other teams competing included Santa Clara University ASCE, placing second in both Best Deck and Most Practical Design; University of Missouri ASCE capturing second in Best Support Structure; and Lawrence Technological University with a fourth place finish in Most Practical Design.

For a complete review of 2014 Competition Results and each individual entry including drawings and photos, go to http://www.msrcd.org/timberbridge and select from menu. Results of 1998-2013 competitions are also posted online. Rules for the 2014 Competition are also posted at that site.

The test bridges were 12.5 feet (3.8 m) long and 4.5 feet (1.4 m) wide and were loaded with a test weight of approximately 4,500 pounds. Average weight of the bridge models was 1,219 pounds (554 kg). At full loading, maximum allowable deflection was 9.5 mm. Percent non-wood materials in the bridges averaged 4%; maximum percent non-wood materials allowed was 25 percent, by weight. All wood members were required to be treated to AWPA standards for ground-contact.

The test bridges were 13.1 feet (4.0 m) long and 4.3 feet (1.3 m) wide and were loaded with a test weight of approximately 4,500 pounds. Average weight of the bridge models was 1,001 pounds (455 kg). At full loading, maximum allowable deflection was 10.0 mm. Percent non-wood materials in the bridges averaged 7.54%; maximum percent non-wood materials allowed was 25 percent, by weight. All wood members were required to be treated to AWPA standards for ground-contact. Each team consisted of average of 9 members and spent an average of 218 hours on their bridge. Cost of each bridge averaged $250 in donated materials and $1500 for purchased materials.

Following the competition, most of the bridges were placed into actual use in parks and on walking trails.

Contact Information: Bennie Hutchins 601-748-2622, Email: bennieh@comcast.net
©2017 Mississippi Association of Resource Conservation and Development Councils.
Report errors to: Keith Mazer.