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Winter 2014 Newsletter

Posted by Composite Advantage on February 11, 2021

Rocks Village Vehicle Bridge - Largest FRP Deck to Date

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The Rocks Village Bridge over the Merrimack River is the oldest moveable bridge in Massachusetts with original construction in 1883. This six span steel truss bridge in northeast Massachusetts has a swing span for Span 3. After rehabilitation of steel truss structure and mechanical systems, a Fiber Reinforced Polymer (FRP) deck was installed to minimize the dead load. FiberSPAN decking was selected because it is a prefabricated product that assisted the contractor to meet an aggressive construction schedule. The deck was installed in cold winter months as bridge construction continues to be a year-round activity.

Deck Panel Installation using Light Duty EquipmentWith an area of 18,776 sf, this is the largest FRP deck on a vehicle bridge in the world. The use of FRP decking was critical to remove load restrictions and save the historical bridge structure. The deck weight has a direct effect on mechanical equipment and operational costs.

Design and construction coordination for older truss structures is important and especially critical for the swing span. As-built dimensions and thermal expansion had to be carefully considered so swing span ends fit correctly over a temperature range greater than 100°F.

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Rocks Village Bridge - Largest FRP Deck to Date

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The FRP deck for Rocks Village Bridge incorporated many features to meet operational bridge requirements and provide as much pre-fabrication as possible to minimize the on-site construction effort.

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Upcoming Composite Advantage Events

February 2 - 5
Ohio Parks & Recreation Association Sandusky, Ohio

April 14 - 17
International Trails Symposium Scottsdale, Ariz.

June 8 - 12
International Bridge Conference Pittsburgh, Pa.

If you are attending any of these events and would like to schedule a meeting with Composite Advantage, please call Scott Reeve at 937-723-9031 or email info@compositeadvantage.com