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Is there any kind of standard minimum height for railroad bridges over large rivers, like the Ohio River for example? A bridge where a barge might pass under? I am trying to figure out what the height over the river should be for some tracks.Thanks,
RE: Bridge over water Height, UP6767, Dec-02-04, 05:48 PM, (1) RE: Bridge over water Height, lirc201, Dec-02-04, 06:30 PM, (2) RE: Bridge over water Height, UP6767, Dec-02-04, 08:46 PM, (3) RE: Bridge over water Height, lirc201, Dec-03-04, 08:11 AM, (4) RE: Bridge over water Height, henry3, Dec-03-04, 11:47 AM, (5) RE: Bridge over water Height, pvoxland, Dec-03-04, 01:03 PM, (6) RE: Bridge over water Height, Xacto, Dec-03-04, 06:36 PM, (7)
i dont think it matter.. if its close to the water.. youll need a Lift Bridge or a Swing bridge. other then that... im not sure. i see diffrent hieghts, depending on the hieght of both the river and track.
Shawn. Guilford Rail System www.gvrs.tk SD70ACe_GM73@yahoo.com Korn's # 1 FAN!!
then im not quit sure what you are asking... do you mean does the Railroad bed go up a grade then go over the bridge? i havent seen that, but ive seen a river in a huge gully of some sort so the track is way up there.
Shawn. Guilford Rail System www.gvrs.tk SD70ACe_GM73@yahoo.com Korn's # 1 FAN!!
What is the minimum height, (or standard) distance from top of railhead to the surface of water for a bridge if it will not be a lift bridge? My guess would be around 15m. I am not sure how tall a tug boat is above the water or what clearance is needed to go under a railroad bridge.
There is probably not a standard height as such. The height would be based on what is expected to pass under the bridge in question. I would imagine that either the Coast Guard or Army Corps of Engineers would regulate such things.One possible "cheat" would be to take a look at Rich Garber's "Bodiddly" route. If I remember correctly, he has at least one high bridge over the Ohio River. You can eyeball it for a pretty good estimate since tugs and barges pass under his bridge. Also, you may try contacting him directly. He seems *very* familiar with the Ohio River and its environs.Henry
Although my own northern Minnesota route does not have many bridges, let alone big ones, here's one thing several years of track laying and relaying has taught me. Railroads are *not* roller coasters with abrupt changes in gradients to cross valleys or rivers. Pay attention to aerial photos and topograpic maps, looking for clues about elevation, berms, and cuts. With a little patience and luck, these may give you clues about the actual elevation of the top of the rail as it crosses rivers.
Here's some info on clearances for US waterways.http://www.uscg.mil/hq/g-o/g-opt/clearance.htmThe important dimension is from the water level to the underside of the bridge structure. Add the height of the bridge truss itself to that figure to get the rail height above the water.