Bridge between Cherry Orchard Avenue and Lavery Avenue - https://maps.google.co.uk/maps?q=dublin&ll=53.334919,-6.364936&spn=0.001341,0.002411&hnear=Dublin,+County+Dublin,+Ireland&gl=uk&t=h&z=19
You can get black Dymo tape from a lot of stationers and just stick it on without printing..
..or, maybe it might even be helpful to indicate routes by printing..?
..I think it comes in 9 and 12 mm widths..