| Maintenance action | Time (years) | Cost ( ∉ m2) |
| Silane | 5 | 5 |
| Polyurethane sealer | 5 | 6.4 |
| P-m coating | 10 | 38 |
| Cathodic protection | As long is in service | Installation cost: 220 Maintenance cost*: 70 |
| Chloride extraction | ≈6 weeks | 64 |
| Concrete replacement | N/A | 2464 |
| Waterproofing system | 25 | 32 |