Roller compactor pressing marking on road surface - GIF

[paul_j]

The brass pieces are indeed removed and placed in the bucket, then carried 600 feet to the next station location in that paving lane. In Illinois, they are stamped in the asphalt at 300 feet intervals, but on alternating sides of the road, thus the 600 feet to the next one. On concrete paving, the intervals are 250 feet on alternating sides. A different type of stamp is used for concrete - each number or symbol has a bar across the back side to allow you to lift it out of the wet concrete without leaving finger marks. Concrete paving also has the date poured stamped in the center of the lane at the starting point each day. Asphalt does not have the date. Nothing is purposely poured in the depressions, and we always tried to position the number to avoid the white edge line that would be placed later. I have placed 1000's of those numbers in pavement here in Southern Illinois.