150b. Milnhay Road, Langley Mill Still extant and in use on this road in 2019 are two Concrete Utilities' Avenue 3DNN columns, with Arc 3 brackets. Whilst a number of other 3DNN columns are installed along here too, only these two columns, for some reason, have avoided having their original brackets replaced with steel sleeve brackets, even if their original lanterns are long gone; Philips MA 90 90 W SOX lanterns (likely to date from when the sleeving of the other columns occurred) are installed these days.

The columns are 25 ft (approximately 8 m) in height.

 

The designs for the Avenue 3DNN column and Arc 3 bracket date from 1948, although I am uncertain as to whether these examples are that old, or not - the architectural style of the houses on the street would suggest that they could be from around that period, however.

 

The MA 90s are likely to date from the 1990s; they may have replaced older 90 W SOX (or 140 W SO/H) lanterns.

 

The second un-sleeved column is the next along the road. A sleeved example of the same type of column is visible in the background.

 

If the columns really were around 71 years old when photographed (and even if they were not), they are in excellent condition, with no signs of spalling visible between the column and bracket joint at all.

 

The Concrete Utilities logo (an intertwined 'C' and 'U') and the British Standard 'Kitemark' symbol are moulded into the backs of the columns. Owing to the concrete weathering, these two symbols are rather difficult to discern now.

 

The columns feature a distinctive flat front and shaped back that causes the column shaft to become hexagonal; the bracket follows the same contours. The original inspection doors have been exchanged for modern galvanised steel doors - I suspect that this is because the original doors incorporated the 'drop-latch' locking mechanism - an uncommon system in Derbyshire (owing to CU columns being a rarity in themselves); the modern doors employ the standard triangular bolt locking mechanism.

 

The reason for CU's limited prominence in the County can be explained by another Survivor that can be found on this road - located within a substation compound is an abandoned Stanton 7 concrete column supporting the canopy and internal reflector of a Revo C14408T 'Bell Top' lantern, both of which date from the 1950s. With the Stanton factory being located within Derbyshire, other concrete column manufacturers only made a modest impact on the local street lighting scene (at best). Notice the more modern tubular steel column supporting a Thorn Gamma 6 post-top lantern to the extreme right of the picture.

 

Unlike the Avenue 3DNN columns, the column is spalling quite heavily on the Stanton's column / bracket joint. Curiously, Stanton columns tend generally to be worse for spalling than their Concrete Utilities' equivalents are.

 

The Bell Top lantern is also in poor condition - the enamelled reflector has broken away from its hinges, and the lantern itself appears to be facing the wrong direction, assuming that a glass refractor ring surrounded the lamp originally.

 

See also: Page 96.

 

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