Seq. No.	Lamp Number	Location	Lamp Type	Watt	Isolation Point
1	107073	JUNC ST MICHAELS LN	N/A	N/A	Y
2	34972	ADJ EMEB	SONE	150
3	34973	REAR OF SQUASH CLUB	SONE	150
4	34974	OPP PUMP STATION 3	SONE	250
5	34975	BTWN BRIDGES 1 & 2	SONE	150
6	34976	JNC FP TO BRIDGEGA	SONE	150
7	106915	ON L34972	FL	8
8	106916	OS SILK MILL MUS	FL	8
9	106917	BTWN UNDERPASSES	FL	8
10	106918	JUNC DUKE ST	FL	8
11	107074	BETWEEN U/PASSES - SWITCHROOM 5	N/A	N/A	Y

Meanwhile, the existing underpass lighting consisted of the following items in 1997:

Seq. No.	Lamp Number	Location	Lamp Type	Watt	Isolation Point
1	34977	UNDERBRIDGE 1	FL	65
2	34978	UNDERBRIDGE 1	FL	65
3	34979	UNDERBRIDGE 1	FL	65
4	34980	UNDERBRIDGE 1	FL	65
5	34981	UNDERBRIDGE 2	FL	65
6	34982	UNDERBRIDGE 2	FL	65
7	34983	UNDERBRIDGE 2	FL	65
8	99698	UNDER BRIDGE 2	FL	65

The only difference between the two installations was that the 'old' column supported a WRTL Arc 100 Watt SON-T lantern, whilst the replacement column supported an Iridium running either 45 Watt or 60 Watt CPO-TW.

The 5 ft 65 W fluorescent fittings installed in the two underpasses had already been replaced at this stage.

The replacement fittings are wall-mounted Philips floodlights; each runs a 45 Watt CPO-TW lamp. (By 2023, the floodlights had been replaced with ASD Micro Highway Diamond LED lanterns.)

How do I know that the fittings are Philips-made? Well, I'm just very clever...

Back in daylight, and an 8 m column supporting a Thorn Alpha 8 150 Watt SON-T lantern was next to be replaced. Two new 10 m columns were installed either side of the outgoing column. Another 8 m column supporting an Alpha 8 was installed in the clearing between the two underpasses before the mid-hinged column was installed. Goodness knows how maintenance on this installation was undertaken; given the height restriction either side of it!

The lamp could just be glimpsed from within the Alpha 8's interior.

The new lanterns possibly run 140 Watt CPO-TW.

The illuminated 'Give Way' sign at the junction of Duke Street was also set to be replaced for this scheme - given the state of the outgoing post, replacement was long overdue! The signlight attached to the outgoing post was a Pearce Gowshall L68/25 running two 8 Watt fluorescent lamps; its replacement is a Simmonsigns LUA unit running an LED cluster.

The remaining outgoing columns along the road were later removed in November/December 2011; the following photographs detailing the works were taken on Sunday, 27th November.

The new lighting along this section of the road consisted of twin-optic Urbis Cabrio lanterns; each optic being fitted with a CPO-TW lamp.

The design of the narrow reflectors means that a large portion of the lantern is essentially wasted space.

Meanwhile, another Alpha 8 (albeit of a later type than the version seen earlier) was set for removal on the opposite side of the road. Judging by the heavy weathering to this lantern's canopy, it had seen quite a few years' use! Curiously, this example featured a flat-glass cover, when most versions of this Alpha 8 featured a polycarbonate bowl.

There are more new columns installed than there were outgoing columns being removed; consequently, some of the new installations did not have an equivalent outgoing column installed nearby.

The brackets supporting the new lanterns appeared somewhat spindly in comparison to the Stewart & Lloyd brackets fitted to the outgoing columns.

The new columns are 10 m in height; the old columns are 25 ft. The difference in height is very evident here:

A flat-glass Alpha 8 was fitted here too. Notice that a stainless steel securing toggle is fitted here - the "bowled" versions featured a plastic toggle.

On a Cabrio, the central circular section hinges forwards in order to allow access to the control gear and wiring.

Do you ever feel as if you are being watched?

The final column supported an integrally-geared Thorn Alpha 3 running a 250 Watt SON-E lamp. Curiously, this column was located after the low-height warning device; again, possibly causing problems for maintenance vehicles. This is likely to be the reason behind the new column being placed in front of the gantry.

A Royce Thompson SC1000 photocell controlled the lantern's operation.

The Cabrios are fitted with minature photocells, which cannot be seen from ground level.