Why Steel?

Why should you use steel for your next bridge construction project?

Economical: Short Span Steel Bridges are Cost-Effective on Several Levels.

  • Due to the light weight of steel, cost savings can be significant: smaller abutments, use of local crews, fast installation, lighter equipment – when you add them all up, steel provides significant cost savings.
  • Studies show that weathering, A1010, and galvanized steel reduces both initial and life cycle costs.
  • Steel can compete and even save costs when compared with nearly identical concrete structures. A side-by-side comparison of steel versus concrete bridge showed a 19 percent savings by using steel in the total cost of the structure.
  • Steel bridges also have long lives, decreasing the need for replacement. New press-brake-formed steel bridges last more than 100 years with minimal maintenance requirements during their service lives.
  • Steel’s high strength permits longer spans, minimizing disruption to underlying habitats. In some cases, this can eliminate the need to undertake costly environmental impact studies.
  • Steel is highly resistant to extreme natural disasters such as earthquakes. An example is the 1994 Northridge, California earthquake, which destroyed the surrounding transportation infrastructure but left 96% of the existing steel bridges completely undamaged, even though they were designed using 1940s technology.
  • Steel is the world’s most recycled material and is infinitely recyclable, so it can be repurposed from one bridge project to another. Ohio’s Muskingum County Engineer’s Office (MCEO) estimates that $51,000 was saved in superstructure costs for replacement of the Green Valley Road Bridge.
  • Short span steel bridges can be designed with prefabricated elements which provide a simpler installation and cost savings

Sustainable: Steel is North America’s Number #1 Recycled Material

  • Steel from a disassembled bridge can be used again for another project. When Hurricane Ivan damaged the bridge over Florida’s Escambia Bay in Pensacola, contractors used 36-inch steel beams from a disassembled bridge in Tennessee to make substructure repairs. In Muskingum County, Ohio, five bridges have been replaced with repurposed steel, saving costs as well as resources.
  • The high strength of steel permits longer spans, which minimizes disruption to underlying habitats.
  • Steel is highly resistant to extreme natural disasters such as earthquakes.
  • The American steel industry has achieved a 31 percent reduction in energy intensity and a 36 percent reduction in greenhouse gas intensity since 1990.

Durable: Short Span Steel Bridges are Built to Last

  • Steel is highly resistant to extreme natural disasters, such as earthquakes. Example: 1994 Northridge, CA earthquake, which destroyed the surrounding transportation infrastructure. However, 96% of the existing steel bridges were completely undamaged, even though they were designed using 1940s technology.
  • Steel bridges are not subject to shrinkage or creep under load over time.
  • Weathering, A709-50CR, paint, metalizing, and galvanized coatings protect structural steel and add longevity to the bridge.
  • A durable and nonporous material, steel provides value and a significant return on investment.

Accelerated: Prefabricated Steel Bridges Provide a Safe and Cost Effective Solution for ABC

  • Steel bridges can be fabricated off-site in a controlled equipment and ready to erect as soon as it reaches the bridge site.
  • Reinforcement and formwork installation is not required. Steel erection is not limited to a specific temperature range.
  • Steel is often lighter than other materials for the same span, resulting in smaller or fewer erection cranes.
  • Prefabricated steel bridges accelerate construction and reduce on-site labor requirements, reduce traffic disruption, and overall project costs.  They are also safe – reducing the exposure of workers and public to construction activities as well as environmental impacts.

Innovative: Advances in Steel Technology Reduces the Installed and Life-Cycle Cost of Bridges

  • Steel bridge fabricators provide a wide range of prefabricated steel bridge and buried soil structures – some can be installed in a weekend!
  • The Ohio Department of Transportation and Muskingum County were awarded an Accelerated Innovation Deployment (AID) Demonstration grant to replace a bridge using press brake tub girder (PBTG) technology with a steel Sandwich Plate System (SPS) deck.
  • New steel grades and coating technology can extend the life of a bridge to over 100 years – including advances in weathering, A709-50CR, paint, metalizing, and galvanized coating protection systems.
  • Innovative tools like eSPAN140 provide bridge professionals with the optimal, most cost-effective design for short span steel bridges.

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