Regarding "Mr John Richards, the Rector of Datchet", do we need the honorific Mr?
 Source said Mr but that was a quote from an older more respectful time. Removal of honorific more appropriate for 2010  talk 
In "quickly became unsafe...", should the ellipsis be replaced with a colon?
 Yes! And the other instance.  Another of my tics.  talk 
The flow here seems rather breathless, and may benefit from additional punctuation: "...the building of two new road bridges Victoria Bridge slightly upstream and Albert Bridge slightly downstream which both opened in 1851."  talk 
 Added a couple of commas and a full-stop.  talk 
It is factually accurate and verifiable.
a (references):  b (citations to reliable sources):  c (OR): 
The oxforddnb.com reference requires a journal subscription. According to WP:Access to sources, this does not ruin the reference, but I am wondering: is there a free source, or a peek preview available online? The article fact is sufficiently supported by the brief quote in the footnote.
It is broad in its coverage.
a (major aspects):  b (focused): 
 
It follows the neutral point of view policy.
Fair representation without bias: 
 
It is stable.
No edit wars, etc.: 
 
It is illustrated by images, where possible and appropriate.
a (images are tagged and non-free images have fair use rationales):  b (appropriate use with suitable captions): 
Extra credit given for having the featured article requirement of alt text. -)
Overall: 
Pass/Fail: 
 

When there was a cantilevered section extending out to but not quite touching the Buckinghamshire pier, how large was the gap? An inch? A handspan?
I wish I knew!  I'm pretty sure I've found every mention in the reference works at both Windsor and Maidenhead libraries but I'm going down tomorrow to check the quotes so I'll have another search then.  talk 
How can the bridge be a "back-door to Windsor Castle" when the castle is some distance away from the crossing? I can see how it would have been a convenient back door to the grounds, the estate, Home Park.
Back-door is I think direct from a source. Makes sense for me as I understand the context in relation to the distance to London but I can see why a reader not familiar with the topography might think the castle was hard by the ferry - it's actually about half a mile away. I've changed to "back-way"  talk 
Okay, that's my review—I will watch this space for comments and the article for improvements. Nice article, superb images. Too bad there isn't one of the Divided Bridge which shows its idiosyncrasies in greater detail.   
Got the note... Please take your time, and forget the "seven days" of the template's boilerplate.