When a bishop consecrates a new church I know he blesses every cross in the church including the wooden one on the top of each station as that is the only thing required for a station. The pictures below are not required.
For what it's worth from https://www.catholicculture.org/culture/library/view.cfm?recnum=7269
"Fourteen crosses (not crucifixes) of wood are necessary for the stations. To these alone the indulgences are attached. The pictures or representations are not necessary for the gaining of the indulgences; but they are customary and very helpful in meditating on the Passion and hence should not be dispensed without except for serious reasons. The crosses may be on the picture (the frame) or on the wall. It is perhaps better to put them above the pictures. (Cf. Beringer, Vol I, ed. 1922.)
Once the Way of the Cross has been duly erected, the indulgences remain:
1. If the tablets are removed and new ones put in their place, or if no others are put in their place and the crosses alone remain; for it is to these only that the indulgences are attached.
2. If a minor part of the crosses is renewed. Therefore, if at least one-half (7) of the blessed crosses are destroyed, or are at the same time, not successively, renewed, the indulgences are lost.
3. If one or the other or more, but less than half, of the crosses are removed from the wall, the indulgences remain. But if all are removed at the same time temporarily, or half of them, the faithful cannot during that time gain the indulgences in another place in which they are hung up. But they can gain the indulgences when they are returned to their former place.
4. If the crosses are changed from one place to another in the same church or chapel, the indulgences are not lost.
So, if all the stations in the church or chapel are taken down, for instance when the interior is being decorated, and piled up in an adjoining room and afterwards hung up again in the same church or chapel, even if in a different order, beginning on the opposite side, for example, the indulgences are not lost. They will not have to be blessed anew.
A new erection of the Way of the Cross is necessary when the stations have been removed from the place where they were canonically erected and permanently transferred to another place. If, however, the crosses are to be renewed in the same place, it suffices that they be blessed by a priest having the requisite faculty, provided he can presume the consent of those whom it concerns. (Cf. Cappello, De Sacramentis, Vol II, p. 851, ed. 1938.)"