Horsefall St remains but, if I remember correctly, runs to a 90 degree angle to the map above (towards the flats shown on your flickr photo above).
My girlfriend has, this week, moved out of the City Quay flats (behind Greens gym) which are on the site of the old Herculaneum Dock - I presume that the Brunswick yard shown in the shot above is the site which is now everything between Brunswick Station and City Quay?
It's all quite complex.
Here's the Admiralty plan from way back..
Here's a shot of Herculaneum and the Graving docks from 1907 looking east. You can see the CL yard at the lower right and the LOH girder bridge leading to the tunnel for Dingle.
Here's a view looking west from along side the Graving dock..
This is the view of the yard from the overbridge marked Herculaneum in the map from my post before..
In it you can see that the houses along the top, ie Grafton Street, have now been built on the land that was empty in the photo up above. Note at the left hand there is a tunnel with a steam engine about to enter. That tunnel is still there and the line still uses it.
In streetview
here you can see a train about to enter it.
In the photo below is shot of the complex including Toxteth and Harrington docks.
In this you can make out the then road layout, you can even see the bridges over the CL yard, including the Horsefall Street one, and you should be able to make out the LOH.
That last photo is from a great site, shows lots of the docks, ...
http://www.merchantnavyofficers.com/topp.htmlHere it all is looking west in 2001..
Here's a photo of the Herculaneum LOH bridge partly dismantled..
You are looking back towards town in that and beyond those gates underneath was then the CL yard.
The above bridge went into this tunnel mouth below that is still there today...
Hopefully you should be able to get some bearings on the layout now.