Bridges & tunnels
Over valleys and through hills.
A bridge crosses water, valleys, roads and track. A tunnel goes straight through a hill.
Bridges
- Pick Road bridge or Rail bridge and drag from one bank to the other in a straight line.
- Both ends must be level ground at the same height, above the sea.
- Whatever runs underneath needs room to pass.
- Choose a style from the buttons above the toolbar, or press R. Longer spans need dearer styles.
| Style | Longest span | From | Rail, a tile | Road, a tile | |
|---|---|---|---|---|---|
| Concrete beam | 6 tiles | 1950 | $1,500 | $1,100 | Cheap and plain. |
| Steel truss | 12 tiles | 1950 | $1,950 | $1,430 | A classic railway girder. |
| Stone viaduct | 12 tiles | 1950 | $2,550 | $1,870 | Handsome stone arches. |
| Steel arch | 16 tiles | 1960 | $3,150 | $2,310 | One graceful arch over the whole span. |
| Suspension | 24 tiles | 1965 | $4,200 | $3,080 | Towers and cables for the longest crossings. |
Tunnels
- Pick Road tunnel or Rail tunnel and click a hillside that rises straight ahead.
- The tunnel comes out at the first tile where the ground comes back down to the height of the entrance, up to 30 tiles away. If the hillside there is uneven it is evened out, as with Level land, and the note beside the mouse adds that to the price.
- It costs $1,700 a tile. Join your road or track to both mouths afterwards.