Greater Anglia's 170203 approaches Ipswich with a train from Cambridge. The engineering work is to lay a new track to connect the East Suffolk Line (under the bridge on the right) with New Yard, avoiding conflicts with trains coming off the Great Eastern Main Line on the line to the right of the class 170.
<a href="//commons.wikimedia.org/wiki/User:Geof_Sheppard" title="User:Geof Sheppard">Geof Sheppard</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>