2006-07-10 01:32:37 · 4 answers · asked by cinnomone queen 3 in Cars & Transportation ➔ Other - Cars & Transportation
well becaues a tunnel is a better way to keep a navigation channel open and it is a better way to make a straight line but that is about it tunnels cost alot more then a bridge and it takes longer to dig a tunnel then build a bridge so really tunnels only have 3 reason to be built 1: keep navigation channels open 2: to keep a straight line and keep grades low 3: and to hide a road in a big town (i.e Boston , MA )
2006-07-10 04:37:58 · answer #1 · answered by rjm_333 4 · 2⤊ 0⤋
I guess that you can't fell off a tunnel, but a bridge - yes. A tunnel is more expensive to built but it withstand bad weather conditions.
2006-07-10 08:39:30 · answer #2 · answered by Realname: Robert Siikiniemi 4 · 0⤊ 0⤋
Less noise pollution for the citizens to endure, takes up precious space above ground, opens up opportunities to companies for fair trade, etc.
2006-07-10 08:36:13 · answer #3 · answered by foodlover 3 · 0⤊ 0⤋
Preservation of the natural environment above ground.
2006-07-10 08:36:02 · answer #4 · answered by casey_leftwich 5 · 0⤊ 0⤋