- 137 bridges need modifications to allow overhead wires;
- 30% of bridges need a complete rebuild;
- Civil works will cost about the same as the electrical works;
- 23.000 steel masts will be required;
- 800kms of wiring and registration assemblies;
- Each wiring train will have a mile each of contact and catenary wire on it;
- Wiring will be done at night, six nights a week, 36 weeks a year;
- Network Rail are 50% short of the skills they need for the project.
Looking at the £5billion published budget, we can break this down as bit. We can take out the cost of new trains at £750million (300 vehicles at £2.75million each) and the Reading area modernisation at £850million which gives us £3.4billion. If half this is civil works, the actual electrification works out at £7.3million per kilometre. That's more expensive than I'd expect but it does include signal immunisation work too, so it might come down to £6.5million per km. Well...still expensive.