London Eye, River Thames, London. Lifted October 1999; official public opening 9 March 2000. Sources: London Eye operator timeline, Ingenia, Cranes Today, Building.
135
Metres
Height
~1,600
Tonnes
Wheel self-weight, as reported
110
Per cent
Proof-test target load
~90
Per cent
Reported release load
London Eye, River Thames · Key project figures. Sources: Cranes Today, 1 October 1999 (height, test loads); Ingenia (wheel self-weight, test target).
The London Eye began as a 1993 millennium competition entry by David Marks and Julia Barfield. Construction started in autumn 1998, leaving a little over a year to the end of 1999. The client was The London Eye Company. Mace was the management contractor, and Hollandia designed, fabricated and erected the steelwork.
The wheel is 135 metres high, with about 1,600 tonnes of self-weight as reported by Ingenia, 64 spoke cables and 32 capsules. It was not built upright. The rim was assembled lying flat on piled platforms in the Thames, which avoided the falsework an upright build would have needed. Four rim quarters came from the Netherlands by barge, and the hub-and-spindle assembly was set at the centre. Strand jacks acting from a temporary A-frame, about 90 metres tall, were to raise the structure from horizontal.
The lift depended on temporary works. Temporary cables ran from the top of the spindle to anchorages on the rim, in addition to the permanent tension cables.
The first lift attempt was on 10 September 1999. On the day, a final load test held the rim down on the river platforms while upward force was applied. The target was 110% of the calculated lift load. Cranes Today reported that at about 90%, temporary cables began coming loose from their rim anchorages. The lift was called off. The magazine gave the cause as a rim anchorage that did not rotate fully because of friction. Building reported that the anchorage sockets would be redesigned and the temporary cables replaced.
The successful lift began on 9 October 1999, televised over the weekend of 9–10 October. The Prime Minister performed the ceremonial opening on 31 December 1999, and the operator records a passenger-free rotation that evening. Public opening had been scheduled for January 2000. The operator records 9 March 2000 as the official public opening.
London Eye — reported test condition and three milestones, 1999–2000. Partial schematic, not to scale; calendar intervals are arithmetic, not attributed delay or standby. Diagram: Original — EE&HL Network 2026.
Three milestones. Only one held.
This is not an account of a wheel that rose late. It is about three milestones, erection, ceremonial opening and public operation, that mark different states of readiness.
💡 The Core Insight
The London Eye carried three milestones, each marking a different state of readiness: erection, ceremonial opening and public operation. After the reported temporary-works failure on 10 September 1999, the lift moved and the ceremony held. The official public opening came on 9 March 2000. The sources read do not link that date to the lift failure, and they do not say what the interruption cost or who carried it.
⚙️ London Eye — Milestone Sequence (Published Record)
Autumn 1998Construction begins.
17 Aug 1999Reported original lift date.
10 Sep 1999Final load test, target 110%. Temporary cables reported to release from their rim anchorages at about 90%. Lift called off.
9 Oct 1999Successful lift begins, televised over 9–10 October.
31 Dec 1999Ceremonial opening. Passenger-free rotation.
Jan 2000Public opening as scheduled in mid-1999.
9 Mar 2000Official public opening.
📬 Continue reading — full issue free
The Pattern and The Question — why erection, ceremonial opening and public operation are different states of readiness, and three questions about resources and records when a proof-test stops a lift — are in the full issue, free by email.
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