first layer of concrete placed on bridge a few days agothe guys showed me a bit of the sand they are placing on the bridgehere's their big sand mixerthis green powder is really fineThe green liquid is some sort of sealant mixed with the powdermixing green goo and sandmixing green goo and sandmixing green goo and sandand..... green sandThe sand dumped out a hole in the bottom of the mixer and they hauled it upstairs in bagsthe sand looks amazingly smoothfinished bridge surface is quite greenI stayed watching long enough that they gave me a souvenier