Horizontal curvature for ELR STS is based on the digitised notional centre-line, calculated in 100 metre sections. The average radius computation is weighted, however this should be treated as indicative only. The computed minimum and maximum radii are shown for completeness, and often report a much tighter radius than the physical railway. Radii calculations are influenced by the digitisation quality, and often produce inaccurate values at the extremities of the ELR, areas of tracks divergence, and locations of very tight curvature.
| Mileage | Schematic | Average Radius | Radius Range | Features |
|---|---|---|---|---|
| 51M 0233y - 51M 0330y | 🟡-🔵🔵🔵-⚪ | Moderately Flat (2,210 m) | 903 m → Straight | Southerham Jn |
| 51M 0330y - 51M 0440y | 🟣-🔵🔵🔵-🔵 | Moderately Flat (2,148 m) | 1,887 m → 2,723 m | |
| 51M 0440y - 51M 0550y | 🟡-🟡🟡🟡-🟣 | Moderate (1,109 m) | 878 m → 1,526 m | |
| 51M 0550y - 51M 0660y | 🟠-🟣🟣🟣-⚪ | Moderate (1,977 m) | 746 m → Straight | |
| 51M 0660y - 51M 0770y | 🟠-🟣🟣🟣-🔵 | Moderate (1,317 m) | 692 m → 2,732 m | |
| 51M 0770y - 51M 0880y | 🟠-🟡🟡🟡-🔵 | Moderate (760 m) | 441 m → 4,366 m | |
| 51M 0880y - 51M 0990y | 🟠-🟡🟡🟡-🟣 | Moderate (1,038 m) | 600 m → 1,388 m | |
| 51M 0990y - 51M 1100y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,060 m) | ||
| 51M 1100y - 51M 1210y | 🔵-🔵🔵🔵-🔵 | Flat (4,748 m) | ||
| 51M 1210y - 51M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 51M 1320y - 51M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 51M 1430y - 51M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 51M 1540y - 51M 1650y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (634 m) | ||
| 51M 1650y - 52M 0000y | 🟡-🟡🟡🟡-🟡 | Moderate (814 m) | ||
| 52M 0000y - 52M 0110y | 🟡-🟡🟡🟡-🟡 | Moderate (1,029 m) | 966 m → 1,092 m | |
| 52M 0110y - 52M 0220y | 🟣-🟣🟣🟣-🟣 | Moderate (1,340 m) | ||
| 52M 0220y - 52M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (1,067 m) | ||
| 52M 0330y - 52M 0440y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (686 m) | ||
| 52M 0440y - 52M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (761 m) | ||
| 52M 0550y - 52M 0660y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (657 m) | ||
| 52M 0660y - 52M 0770y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (701 m) | ||
| 52M 0770y - 52M 0880y | 🟠-🟡🟡🟡-🟡 | Moderate (888 m) | 668 m → 1,158 m | |
| 52M 0880y - 52M 0990y | 🟡-🟡🟡🟡-🟡 | Moderate (1,180 m) | ||
| 52M 0990y - 52M 1100y | 🟡-🟡🟡🟡-🟡 | Moderate (1,104 m) | ||
| 52M 1100y - 52M 1210y | 🟡-🟡🟡🟡-🟡 | Moderate (824 m) | ||
| 52M 1210y - 52M 1320y | 🟡-🟡🟡🟡-🟡 | Moderate (899 m) | ||
| 52M 1320y - 52M 1430y | 🟠-🟡🟡🟡-🟡 | Moderate (790 m) | 570 m → 1,071 m | |
| 52M 1430y - 52M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 52M 1540y - 52M 1650y | 🟡-🟡🟡🟡-🟡 | Moderate (785 m) | ||
| 52M 1650y - 53M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 53M 0000y - 53M 0110y | 🟡-🟡🟡🟡-🟡 | Moderate (1,126 m) | ||
| 53M 0110y - 53M 0220y | 🟠-🟡🟡🟡-🟡 | Moderate (937 m) | 689 m → 1,190 m | |
| 53M 0220y - 53M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (895 m) | ||
| 53M 0330y - 53M 0440y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (623 m) | ||
| 53M 0440y - 53M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (1,079 m) | ||
| 53M 0550y - 53M 0660y | 🟡-🟡🟡🟡-🟡 | Moderate (1,008 m) | 917 m → 1,100 m | |
| 53M 0660y - 53M 0770y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (608 m) | ||
| 53M 0770y - 53M 0880y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (716 m) | SOUTHEASE | |
| 53M 0880y - 53M 0990y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (750 m) | SOUTHEASE | |
| 53M 0990y - 53M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 53M 1100y - 53M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 53M 1210y - 53M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 53M 1320y - 53M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 53M 1430y - 53M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 53M 1540y - 53M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 53M 1650y - 54M 0000y | 🟡-🟡🟡🟡-🟡 | Moderate (1,187 m) | ||
| 54M 0000y - 54M 0110y | 🟡-🟡🟡🟡-🟡 | Moderate (895 m) | 760 m → 1,015 m | |
| 54M 0110y - 54M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (1,180 m) | ||
| 54M 0220y - 54M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (1,187 m) | ||
| 54M 0330y - 54M 0440y | 🟡-🟡🟡🟡-🟡 | Moderate (826 m) | 790 m → 866 m | |
| 54M 0440y - 54M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (1,139 m) | ||
| 54M 0550y - 54M 0660y | 🟡-🟡🟡🟡-🟡 | Moderate (804 m) | ||
| 54M 0660y - 54M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (863 m) | ||
| 54M 0770y - 54M 0880y | 🟠-🟡🟡🟡-🟡 | Moderate (802 m) | 625 m → 1,057 m | |
| 54M 0880y - 54M 0990y | 🟡-🟡🟡🟡-🟡 | Moderate (826 m) | ||
| 54M 0990y - 54M 1100y | 🟡-🟡🟡🟡-🟡 | Moderate (940 m) | ||
| 54M 1100y - 54M 1210y | 🟡-🟡🟡🟡-🟡 | Moderate (1,046 m) | ||
| 54M 1210y - 54M 1320y | 🟣-🟣🟣🟣-🟣 | Moderate (1,342 m) | ||
| 54M 1320y - 54M 1430y | 🟣-🟣🟣🟣-🟣 | Moderate (1,284 m) | ||
| 54M 1430y - 54M 1540y | 🔵-🔵🔵🔵-🔵 | Moderately Flat (2,071 m) | ||
| 54M 1540y - 54M 1650y | 🟡-🟡🟡🟡-🟡 | Moderate (1,079 m) | ||
| 54M 1650y - 55M 0000y | 🟡-🟡🟡🟡-🟡 | Moderate (1,144 m) | ||
| 55M 0000y - 55M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 0110y - 55M 0220y | 🟡-🟡🟡🟡-🟡 | Moderate (1,188 m) | ||
| 55M 0220y - 55M 0330y | 🟡-🟡🟡🟡-🟡 | Moderate (1,030 m) | 961 m → 1,124 m | |
| 55M 0330y - 55M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 0440y - 55M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (883 m) | ||
| 55M 0550y - 55M 0660y | 🟣-🟣🟣🟣-🟣 | Moderate (1,598 m) | 1,367 m → 1,872 m | |
| 55M 0660y - 55M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (868 m) | ||
| 55M 0770y - 55M 0880y | 🟣-🟣🟣🟣-🟣 | Moderate (1,353 m) | ||
| 55M 0880y - 55M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 0990y - 55M 1100y | 🟢-🟢🟢🟢-🟢 | Very Flat (5,398 m) | ||
| 55M 1100y - 55M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 1210y - 55M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 1320y - 55M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 1430y - 55M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 1540y - 55M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 55M 1650y - 56M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 56M 0000y - 56M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 56M 0110y - 56M 0220y | 🟣-🔵🔵🔵-⚪ | Flat (4,608 m) | 1,430 m → Straight | |
| 56M 0220y - 56M 0330y | 🟠-🟠🟠🟠-⚪ | Moderately Tight (514 m) | 433 m → Straight | |
| 56M 0330y - 56M 0440y | ⭕-🟣🟣🟣-⚪ | Moderate (1,452 m) | 188 m → Straight | |
| 56M 0440y - 56M 0550y | 🟠-🟠🟠🟠-🟠 | Moderately Tight (554 m) | NEWHAVEN TOWN | |
| 56M 0550y - 56M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | NEWHAVEN TOWN | |
| 56M 0660y - 56M 0770y | 🔴-🟠🟠🟠-⚪ | Moderately Tight (742 m) | 302 m → Straight | |
| 56M 0770y - 56M 0880y | 🔴-🟡🟡🟡-⚪ | Moderate (821 m) | 299 m → Straight | |
| 56M 0880y - 56M 0990y | 🟠-🟠🟠🟠-🟠 | Tight (497 m) | NEWHAVEN HARBOUR | |
| 56M 0990y - 56M 1100y | ⭕-🔴🔴🔴-🟠 | Very Tight (322 m) | 162 m → 420 m | NEWHAVEN HARBOUR |
| 56M 1100y - 56M 1210y | ⭕-🔴🔴🔴-⚫ | Very Tight (269 m) | 102 m → 20,190 m | NEWHAVEN HARBOUR |
| 56M 1210y - 56M 1320y | ⭕-⭕⭕⭕-⚪ | Extremely Tight (198 m) | 139 m → Straight | Newhaven Harbour Jn |
| 56M 1320y - 56M 1430y | ⭕-🟡🟡🟡-⚪ | Moderate (887 m) | 188 m → Straight | |
| 56M 1430y - 56M 1540y | 🟡-🟡🟡🟡-🟡 | Moderate (1,054 m) | ||
| 56M 1540y - 56M 1650y | 🔴-🟠🟠🟠-🟠 | Tight (378 m) | 272 m → 543 m | |
| 56M 1650y - 57M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 0000y - 57M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 0110y - 57M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 0220y - 57M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 0330y - 57M 0440y | 🟣-🟣🟣🟣-🟣 | Moderate (1,323 m) | ||
| 57M 0440y - 57M 0550y | 🟡-🟡🟡🟡-🟡 | Moderate (1,014 m) | ||
| 57M 0550y - 57M 0660y | 🟡-🟡🟡🟡-🟡 | Moderate (1,039 m) | ||
| 57M 0660y - 57M 0770y | 🟡-🟡🟡🟡-🟡 | Moderate (1,018 m) | ||
| 57M 0770y - 57M 0880y | 🟡-🟡🟡🟡-🟡 | Moderate (1,051 m) | 841 m → 1,234 m | |
| 57M 0880y - 57M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 0990y - 57M 1100y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 1100y - 57M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 1210y - 57M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 1320y - 57M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 1430y - 57M 1540y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 1540y - 57M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 57M 1650y - 58M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 0000y - 58M 0110y | ⚪-⚪⚪⚪-⚪ | Straight | BISHOPSTONE | |
| 58M 0110y - 58M 0220y | ⚪-⚪⚪⚪-⚪ | Straight | BISHOPSTONE | |
| 58M 0220y - 58M 0330y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 0330y - 58M 0440y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 0440y - 58M 0550y | 🟢-🟢🟢🟢-🟢 | Very Flat (17,335 m) | ||
| 58M 0550y - 58M 0660y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 0660y - 58M 0770y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 0770y - 58M 0880y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 0880y - 58M 0990y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 0990y - 58M 1100y | 🔵-🔵🔵🔵-🔵 | Flat (3,927 m) | ||
| 58M 1100y - 58M 1210y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 1210y - 58M 1320y | ⚪-⚪⚪⚪-⚪ | Straight | ||
| 58M 1320y - 58M 1430y | ⚪-⚪⚪⚪-⚪ | Straight | SEAFORD | |
| 58M 1430y - 58M 1540y | 🔵-🔵🔵🔵-🔵 | Flat (3,896 m) | SEAFORD | |
| 58M 1540y - 58M 1650y | ⚪-⚪⚪⚪-⚪ | Straight | SEAFORD | |
| 58M 1650y - 59M 0000y | ⚪-⚪⚪⚪-⚪ | Straight | SEAFORD | |
| 59M 0000y - 59M 0057y | ⚪-⚪⚪⚪-⚪ | Straight |