WORK is progressing on the Forrestfield station in High Wycombe as part of the Forrestfield-Airport rail link.
The first 18 of 92 pre-cast concrete panels, which will form a retaining wall along the eastern side of the station, have been craned into place.
The retaining wall will run the length of the station and separate the ground-level bus interchange from the train line which sits at a lower grade.
Excavation work also continues at the Airport Central station.
Construction of the station box structure is continuing in readiness for the arrival of tunnel boring machine Grace in the new year.
Ground level slabs have been completed and excavation to concourse level is almost 70 per cent complete.
The construction team have so far excavated to a depth of 8.5m.
When complete, the train line within the station box will sit 15m below ground level.
Works are also on track at Bayswater.
The temporary relocation of the Midland line is taking shape with much of the required track near Railway Parade now laid.
A series of out of hours works is required in late November and early December to enable construction close to the existing rail, without trains operating.
The temporary line is expected to be ready for its first train in mid-December, after which the existing Midland line will be removed to allow for the construction of the Bayswater dive structure.