For tunnels in metropolitan areas, be aware of the benefits of a reduction in traffic which can happen on the surface, and capture them in the project scope.
Benefits and considerations
- Improved quality of open space
- Increased vibrancy through the increase in space for staying
- Increased space for walking and cycling encourages their uptake
Example
The space for staying, walking and cycling along William Street between Sydney and Kings Cross was upgraded concurrently with the Cross‑City Tunnel project. Widened footpaths, dedicated space for cycling, improved furniture and lighting, and improved facilities for walking at intersections have generated a better connection between two vibrant areas a short distance apart.
Details
Location:
William Street, Woolloomooloo between Young Street and Bourke Street
Agency responsible:
TfNSW
Application
| Main roads | Main streets | ||
|---|---|---|---|
| Motorway |  | Transit boulevard |  |
| Principal arterial | | High-activity high street | |
| Rural highway | | High-activity mall | |
| Rural link | | Transit street | |
| Connector avenue | | ||
| Transit way | | ||
| Local streets | Civic space | ||
|---|---|---|---|
| Connector street | | Destination high street | |
| Neighbourhood street | | Mall | |
| Yield street | | Civic lane | |
| Residential way | | Service lane | |
| Residential lane | | ||
| Street park | | ||
| Enterprise street | | ||
Legend
| Appropriate treatment |
 | Use with caution |
 | Inappropriate treatment |
| Not applicable |