Photos of bridges being raised? (5)
I believe the answer is:
snaps
'photos' is the definition.
(I've seen this before)
'bridges being raised?' is the wordplay.
'bridges' becomes 'spans' ('span' can be a synonym of 'bridge').
'being raised?' is a reversal indicator.
'spans' in reverse letter order is 'SNAPS'.
'of' is the link.
(Other definitions for snaps that I've seen before include "shots" , "Breaks in two" , "Breaks under tension" , "Breaks suddenly" , "Spells of cold weather" .)