Janson Section Bridge Mark I - Technical Properties
| Bridge Type | JSB Mark I |
| Unit lengths (m) | 6, 9, 12, 24 |
| Unit widths (m) | 3.5 |
| Road widths (m) | 3.5, 7, 10.5 |
| Footways (m) | 1.0 |
| Max Free Span (60 tonne load) | 33 m |
| Bridge Type | JSB Mark I |
| Unit lengths (m) | 6, 9, 12, 24 |
| Unit widths (m) | 3.5 |
| Road widths (m) | 3.5, 7, 10.5 |
| Footways (m) | 1.0 |
| Max Free Span (60 tonne load) | 33 m |
