Queensland Roads - SR 20
SR 20, Walter Taylor Bridge
The only non-bridge photo on this page, SR 20 SB at SR 35.
I can see the entrance to Walter Taylor Bridge, but before I can get there, I have to loop under a plethora of other bridges: Jack Pesch (walking path, suspension bridge), Albert (railway, arched truss), and Indooroopilly Railway (modern truss).
The first photo shows the classic entrance to the Albert Bridge, but it's difficult to see that from a train. The bridge's walking path, if it's even still open, goes from abutment to abutment with staircases embedded therein. The Jack Pesch Bridge is the walking path you're expected to use now.
Featuring the double-arched Albert Bridge and its 1895 abutment next to the 1957 Indooroopilly Railway Bridge. Actually, both bridges carry the same rail line, but a second one was necessitated by four-tracking the railway for capacity.
Now I'm up to the Walter Taylor. The beefy tower has windows for a reason: it actually houses a livable facility. Allegedly, this is the only habitable bridge in the Southern Hemisphere.
Not the best quality photos (thanks, windscreen), but these are the only ones that really show all four bridges.
The Walter Taylor Bridge is an unusual type of suspension bridge known as a Steinman bridge. In a Steinman bridge, the cables are hybridized with a truss, as you can clearly see in the second photo. While the truss helps hold up the deck, allowing for slimmer suspenders (note that these are bars, not cables), an interesting thing happens in the middle: there's no top chord! The cables themselves form the top chord between the diagonals on either side of the truss, which you can see in the 3rd and 5th photos. So I can't say that the Albert Bridge is the most historical bridge here, even though it predates this one (1936) by over 40 years, because it's relatively ordinary by comparison.
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