This picture shows the lifting door in the up position.  You can also see the 4 ft long harbour that is 1ft6.  Also level 3 harbour station will be built here for passenger trains.  Below at level 2 is the container yard for goods trains.  Level 1 is for container ships.

This shows lifting bridge no. 2, also with two layers of track.  

 This is a photo of the process of building the Brunel 1859 bridge.  It still need to be completed and painted, it is 8 ft long.  Another lifting bridge for enabling big container ships to go through is still to be built where there is a gap.  This will have an electric motor to lift it.  Small boats can go under the yellow section of the bridge in the foreground.