Although the practice of using a concrete barrier down the center of a roadway to separate opposing traffic dates back to the mid-1940s, the practice seems really to have gained steam when, in 1955, ...

PHILADELPHIA -- The fear of another terrorist attack and the threat of truck bombs has fueled a sudden rush to protect courthouses, airports and monuments, leaving concrete companies scrambling to ...

ST. LOUIS -- The Gateway Arch's superintendent admits the concrete barriers safeguarding the landmark's grounds do the job in keeping any terrorist-minded motorists away. But Ken Schaefer says those ...