This was work in the Triangle Sidings area and involved operating a sort of joint H&C, Circle and Wimbledon-Egware Road C Stock service managed by two different lines and staffed by even more depots. It made the front page of the Evening Standard several times and lasted about a week IIRC.
The complicated crew changes between District and Circle line drivers on different platforms caused most problems. Trains ran Wimbledon to Edgware Road via Tower Hill. District line drivers done Wimbledon to Gloucester Road whilst Circle Drivers done Gloucester Road to Edgware Road. The delays at Gloucester Road started with slight late running to blocking back from Tower Hill by mid day.
There were two sets of 'Covered Way' works, both with Temporary WTTs.
Covered Way No 58 Works TTN 11/99 (H&C/C'cle), TTN 12/99 (District), booked to be in force from Saturday 12th June - Sunday 15th August.
Covered Way No 12 Works TTN 4/01 (H&C/C'cle), TTN 3/01 (District), booked to be in force from Saturday 3rd February - Saturday 12th May.
Covered Way No 58 works comprised 'Civil engineering works on the rebuilding and strengthening of Covered Way No58 between Gloucester Road and High Street Kensington means that no Circle line service can run between these two stations. Consequently Circle Line and District Line Wimbledon to Edgware Road services are being combined and altered to operate, generally as follows:
Wimbledon - Gloucester Road - Tower Hill - Aldgate - Edgware Road - High Street Kensington - Wimbledon (this direction only). The 'Inner Rail Service'
Wimbledon or Olympia - HSK - ERd - Aldgate - T Hill - Glos Rd - Wimbledon or Olympia (this direction only). The 'Outer Rail'service.'
Covered Way No 12 works suspended the District between HSK and Paddington, the service to Wimbledon was enhanced with Some Richmonds/Ealings sent the other way and the Olympia service was withdrawn.
I've got the four TTNs and the C stock set working book for Covered Way No 58 works in the library.
If we can have A 244/R 246A, ODX 246A/R 246B, A 246B/ROD 1, OD 1/ROD 2 then I'm going to have A (7)88/R (7)90A, NHX (7)90A/R (7)90B, A (7)90B/RNH 1, NH 1/RNH 2 and hang the consequences!
The timetable for CW58 was the least successful and was abandoned after the first week. It was easier for the old programme machine rolls to be reinstalled and have every circle line train cancelled manually than to try and keep the service going. Towards the end there was a C stock extra between Mansion House and Putney Bridge, which did go to Ealing Broadway later in the evening.
CW12's timetable was the one where the off-peak Ealing and Richmond services where reduced in frequency; Ealing to a 20min service and Richmond to a 10 or 15 minute service IIRC.
the orignal plan was C stocks to go to Olympia from aldagte as the t/d sign at tower hill and cannon street had its glass changed for this (i changed it) but it only lasted i think 3 days. the covered way was to lower the track bed to allow strengthing gurlders to be installed in the 2 tunnels