Oh gods... This is so lovely. I read on klynie1's rec and I'm very glad I did! You completely sucked me in with this story, I suppose the premise of the bridge helped. I'm an engineer's son and I grew up around construction sites and, indeed, bridges. I love architecture and I love Tower Bridge as one prime example of such.
You have brought tears to my eyes with a story written in Severus' voice - and he's usually one of my least favourite characters to read. I admit that I only dared read this because of the warning! :-) I have something like a squick for Snarry as a sexual pairing, but this... this is lovely! The relationship between the two is so beautiful and subtle and I found Albus' meddling to be perfect; it brought a smile to my face.
I dearly wish all the characters all the best - and I think that's just how one should feel after reading a good story.
My deepest respect for capturing the style so well also. For the research and the keen portrayal of the details - including things I know well, like the complaints any feat of engineering has to work through *S*