| A hybrid composite-concrete bridge combining the advantages of advanced composite materials and concrete


  • 2015 White House Transportation Champion of Change Award by the U.S. Department of Transportation and the White House Office of Public Engagement
  • 2011 Charles Pankow Award for Innovation by the American Society of Civil Engineers (ASCE)
  • 2011 Engineering Excellence Awards by the American Council of Engineering Companies (ACEC)
  • 2010 Most Creative Product Award by the American Composites Manufacturers Association (ACMA)


The Composite Arch Bridge System, commonly known as Bridge-In-A-Backpack, has been used in 28 bridges in the U.S. and beyond. This technology accelerates bridge construction time, reduces life cycle costs, and has received top industry recognition. It’s a lightweight, corrosion-resistant system for short to medium-span bridge construction that uses FRP composite arch tubes as both reinforcement and formwork for cast-in-place concrete. The arches are easily transportable, rapidly deployable, and do not require the heavy equipment or large crews required for traditional construction materials. 


  • Bridge-in-a-Backpack  is licensed to AIT Bridges,  ASCC’s commercialization partner for this technology
  • American Association of State Highway and Transportation Officials (AASHTO)  approval to use the bridge technology in all fifty states.
  • $1.7 million capital raised 
  • 28 projects completed and underway


Arch technology with construction of low maintenance, joint-free, hybrid composite buried structure

  • Lightweight: Bridge-in-a-BackpackTM  tubes are 1/250th the weight of a 70ft. Concrete girder
  • Longer lasting: composite structural members require no painting, will not rust, crack or spall and have been tested for 75+ years of truck traffic with no loss in strength
  • Safe: extensive laboratory testing demonstrates that Bridge-in-a-BackpackTM  exceeds code requirements 
  • Congestion relief: lighter, modular bridges allow for “Accelerated Bridge Construction” which reduces traffic congestion during traffic construction and mitigates the effect of lengthy construction schedules on economic vitality 

Bridge-in-a-BackpackTM Carbon Footprint Analysis

  • Bridge-in-a-BackpackTM superstructure has 50% of the carbon footprint of a typical concrete bridge.
  • The total carbon footprint of the Bridge-in-a-BackpackTM is 45.71 kg (CO2e/year)/sq m. This is one third less than the carbon footprint of a comparable concrete bridge and one fourth less than that of a steel bridge.
  • A recent report by the Federal Highway Administration concluded that 25.4% (152,316) of all bridges are either structurally deficient, in need of repair, or functionally obsolete. If Bridge-in-a-BackpackTM replaced just 20% of these bridges, the equivalent amount of CO2 emissions reduction would equal taking 230,000 cars off the road.

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