Repairs or replacement of transportation infrastructure is a necessity, for the safety of the public Replacing a deficient or very old highway and railway bridge is one example.
In difficult terrain, it gets much more expensive to replace the entire bridge. .
This report FHWA-NJ-2012-003 looked at the impact of increasing the weight of freight rail car on various passenger lines in New Jersey. Most of the railway bridges in New Jersey were built prior to World War II and are not designed for this... more »
Investigate methodologies to reduce shrinkage cracking of asphalt mats at cold joints and elsewhere in the mat. Shrinkage cracks are the principal cause of joint failure of paving mats. Is it a mix design issue or do installation techniques need to change?