06-28-2021, 01:21 PM
(06-28-2021, 12:58 PM)tomh009 Wrote: The distance across the highway is about 50m (depending on the exact point of measurement). Are you expecting a 100m+ ramp on each side?
You are saying the bridge would be 3m wide. How wide would the tunnel be? The same?
The ramp, as shown in the renderings, appears to be at least 200m long, plus the bridge, plus the ramp on the other side, this is why I would prefer a tunnel.
Yes, the distance across the highway is 50m, but if building tunnels, there is no need to tunnel through the middle, so only two 10 and 15 m tunnels are needed.
A tunnel could be much wider, again, this would add cost to the tunnel, but given that to widen the bridge, we'd be widening at least 1/4 of a km of bridge and causeway to do it, rather than two 10-15m long structures.