A different kind of concrete jungle
Sometime in the late 80s, somewhere in the Midwest (I think it was Grand Rapids), I taxied a USAir BAC 1-11 toward the terminal after landing on a flight from Pittsburgh. I remember the airport had a small, older terminal and there were no jetways, those loading bridges that almost all airline airports have now, so passengers walked on the ramp. As we came on the ramp, I saw there were blocked sections near the terminal where workmen were replacing concrete.