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Comments to #24
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birdman 6 year s ago
#3... Concrete no longer lasts? No way! Modern concrete lasts way longer than 50 years in fact it is constantly getting harder ... never stops. Unless not mixed right in the first place Check out what the Germans built 70 years ago on coast lines .... not even phased after 75+ years
Traffic Signs
Traffic and road signs are not modern day phenomena. The Romans used them, too. On their many roads and highways, they used large “milestones” to give travelers information on the direction and distance of Rome and other towns.
-1
1.
birdman 6 year s ago
#3... Concrete no longer lasts? No way! Modern concrete lasts way longer than 50 years in fact it is constantly getting harder ... never stops. Unless not mixed right in the first place Check out what the Germans built 70 years ago on coast lines .... not even phased after 75+ years