In practice, this leads to numerous weld repairs and rigorous inspection requirements that drive up the cost of orthotropic deck
Vejrum, "Analysis of an orthotropic deck
stiffened with a cement-based overlay," Journal of Bridge Engineering, vol.
The old structure was demolished to make way for a 213 metre-long orthotropic deck
bridge with four spans.
These concerns, along with the advanced age of the bridge, prompted DRPA's decision to replace the deck with a structure that was lightweight, entailed low initial construction costs, was less vulnerable to leakage and corrosion, and (unlike an orthotropic deck
) could be fabricated domestically.
As part of the project, Tom Riester, chief structural engineer, needed to replace the bridge's aluminum flooring system and aluminum orthotropic deck
, which were installed in 1933.
Engineers define an orthotropic deck
as one that consists of steel plates supported by ribs underneath, overlain by an integrated wearing (driving) surface.
has developed a new orthotropic deck
system that has great potential as a retrofit option for aging bridges.