2006-11-27 08:15:02 · 7 answers · asked by megdbrown10304 2 in Cars & Transportation ➔ Other - Cars & Transportation
because roads have the ground under them to help insulate them a bit and keep their surface temperature from dropping as quickly.
However, bridges have nothing beneath them to help keep heat in, so they drop tempertaure very quickly since they are getting cooled from both sides
2006-11-27 08:22:18 · answer #1 · answered by teel2624 4 · 1⤊ 0⤋
The road surface of the bridge cools faster than the regular road surface, because the bridge has cool air above and below the road surface.
2006-11-27 16:23:22 · answer #2 · answered by deborah b 1 · 1⤊ 0⤋
Bridges freeze faster than roads because the frigid air is both above and BELOW the roadway. A road on the earth actually absorbs heat from the soil below.
2006-11-27 16:24:37 · answer #3 · answered by Wolfithius 4 · 1⤊ 0⤋
Because of the cold air hitting the bridge from both the top and bottom.
2006-11-27 17:49:24 · answer #4 · answered by ...mr2fister... 7 · 0⤊ 0⤋
because the air blows on all surfaces top and bottom when a road can only be exposed on the top surface
2006-11-27 17:01:17 · answer #5 · answered by accomacgeo 4 · 0⤊ 0⤋
bridges dont have insulation under them but roads do?
2006-11-27 16:41:04 · answer #6 · answered by MiaDiva28 6 · 0⤊ 0⤋
no insulation underneath
roadway cools faster with the cold wind blowing underneath it
2006-11-27 16:22:13 · answer #7 · answered by Funchy 6 · 1⤊ 0⤋