please empty your brain below

B&D might not be a railway viaduct kind of borough yet but, once the Barking Riverside branch opens, that will change. I don't know if that will create any more height restrictions, however.

Great analysis as ever DG, thank you.
When I was a boy, the railway crossed Ripple road via a level crossing (nd went past my nan's house) - I think this was replaced in the late 70s. Did the bridge by the old ford fctory join two parts of the factory?
Interesting that height restrictions are on triangle hazard signs while the width restrictions are on round regulatory (must be followed) signs.
It might be interesting to actually measure the height on these low bridges and see how accurate the warnings are - especially when the pavement is higher than the road.
Thanks for the information about Shoe Lane. The walk I am doing later in the week is supposed to go down it..... Interesting blog today, I wonder how many of us walk under these low bridges and not even notice they are there.
As you say, railways are the chief culprit. Even the short line from Motspur Park to Chessington manages 5 low bridges, and it was built in 1938 when I imagine there were highish road vehicles.
Several of those signs do not meet current TSRGD regulations, which require the clearance to be rounded down to the next 3 inches or the next 0.1 m (10cm). So any headroom not shown as a multiple of 3", or in metric with more than one decimal place, is non-compliant.
It never fails to baffle me that TfL spends time and money producing information that is freely available elsewhere, usually badly. A list of low bridges is freely available elsewhere, such as the Truckers Atlas, and with the added bonus of precise heights rather than the 13'3" to 14'9" fudge on this effort.
Their roadworks summary is equally poor. Apart from inaccurate information posted the background map is still using a 2006 underlay map, totally useless near Stratford and Olympic Park area, realigned gyratories such as Aldgate, Tottenham Hale and Shoredith, amongst others
Slightly surprised that a "motor age" development like that over London Wall would be allowed to be slightly height restricted, seeing that before it was built, that was an open road.
Harrow's 9 to Hillingdon's 31 might explain the number of supermarket semi's that thunder up and down my road to and from that borough!
My cycle commute takes me via Lower Downs Road in Wimbledon, which is on NRs list of "most bashed bridges in Britain". Over the years I've pulled together quite a collection of very sorry looking vehicles; just do an image search for similar examples e.g. this.
Geo_rich - This reminds me of a bridge in the US, which seemed to crop up on Youtube a lot due to the endless number of colisions with it before they raised it or lowered the road underneath.

I reckon the Ocado van pictures could get under the bridge if it let some air out of its tyres..
Adrian: you mean 11' 8" bridge which is now an improved but still lower than typical 12' 4" and still has many crashes (onto the protection bars rather than bridge itself, and only from one direction).

Geo_rich: Lower Downs Wimbledon needs cameras and a YouTube channel.
TfL could have just provided a link to this map produced by Chris Minihan.
Bob L-S That one is not perfect either. Mill Rd Ilford (12' 0") is missing.
Great post. Somehow my inadvertent meanderings around the City on foot have taken me under six of those restrictions listed by TfL (it took a look at the map to recognise the road leading to The Ship) and past if not under the seventh (now gone near Barts).

But is the TfL list is not comprehensive The Minihan map (thanks Bob) notes a few more in the City, including one on Crutched Friars. I can't see a sign on the railway bridge, but nearby there is a triangular warning sign (7'9" / 2.36m) over the the entrance to French Ordinary Court (IanVisits). And a short distance away, another (4.11m / 13'6") over Carlisle Avenue where it meets Jewry Street (Geograph image).
Whisper it: Coppermill Lane (Path)










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