barge bridge build building cassion concrete construction crane cross crossing dam Edinburgh estuary Firth Forth landmark river road scotland span steel suspension tall tower water aluminum background bright brushed circle grey highlight iron metal metallic modern New plate polished reflection reflective rotation round shiny smooth specular stainless style texture wall aluminium architecture block England english futuristic glass gray Great Britain iconic London offices power ribbed ribs silver skyscraper anti-slipping circles circular color colored colors colour coloured colours embedded patterns pavement pavement grips paving safety speckled squares surface surfaces textures abstract clinch Dirt dirty element elements panel panels rhombus rivet rivets rust rusty saavem sand sanded spoil spoiled white air decay design grunge grungy MIG old oxide plane airplane plate metal plate plates rough scratch sheet textural textured urban weathered