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National Boards => General Highway Talk => Topic started by: Alps on July 22, 2010, 07:53:30 PM

Title: Modern truss overpasses
Post by: Alps on July 22, 2010, 07:53:30 PM
I'm working on a project where it is proposed to replace an existing highway bridge with a "through girder."  Back in the day, this was a slab-sided monstrosity you'd typically see as a railroad trestle.  But when I saw the plans, in fact the girders are trusses, making this sort of a pony truss overpass.  The question is, where else today are there newly built or proposed trusses for just a simple highway overpass?

(There aren't even that many historically, as usually the truss would also pass over a river or railyard.  One example I'm familiar with is the old West Side Highway, which had truss overpasses for certain cross streets.)
Title: Re: Modern truss overpasses
Post by: Troubleshooter on July 30, 2010, 04:01:23 AM
I don't know about that, but I can show you a SPUI with a suspension bridge.

http://maps.google.com/?ie=UTF8&ll=39.200334,-85.958641&spn=0.009295,0.016544&z=16&layer=c&cbll=39.200249,-85.958883&panoid=grBN8BT98GNvicfSPtYlVA&cbp=12,77.87,,0,2.78 (http://maps.google.com/?ie=UTF8&ll=39.200334,-85.958641&spn=0.009295,0.016544&z=16&layer=c&cbll=39.200249,-85.958883&panoid=grBN8BT98GNvicfSPtYlVA&cbp=12,77.87,,0,2.78)

It is just west of Columbus IN, at the junction of I-65 and IN-46.
Title: Re: Modern truss overpasses
Post by: froggie on July 30, 2010, 08:15:15 AM
QuoteI don't know about that, but I can show you a SPUI with a suspension bridge.

Tied arch, actually...
Title: Re: Modern truss overpasses
Post by: Troubleshooter on August 04, 2010, 02:19:05 AM
Quote from: froggie on July 30, 2010, 08:15:15 AM
QuoteI don't know about that, but I can show you a SPUI with a suspension bridge.

Tied arch, actually...

THEY call it a suspension bridge.
Title: Re: Modern truss overpasses
Post by: US71 on August 04, 2010, 04:58:36 AM
What about the wooden arch truss in South Dakota?
Title: Re: Modern truss overpasses
Post by: US71 on August 04, 2010, 12:10:51 PM
Quote from: Troubleshooter on August 04, 2010, 02:19:05 AM
Quote from: froggie on July 30, 2010, 08:15:15 AM
QuoteI don't know about that, but I can show you a SPUI with a suspension bridge.

Tied arch, actually...

THEY call it a suspension bridge.

"THEY" who? And aren't we just arguing semantics here?
Title: Re: Modern truss overpasses
Post by: agentsteel53 on August 04, 2010, 12:19:52 PM
Quote from: Troubleshooter on August 04, 2010, 02:19:05 AM

THEY call it a suspension bridge.

THEY can call it a tuna fish sandwich, and it would not be one.
Title: Re: Modern truss overpasses
Post by: Troubleshooter on August 04, 2010, 11:03:03 PM
Quote from: US71 on August 04, 2010, 12:10:51 PM
Quote from: Troubleshooter on August 04, 2010, 02:19:05 AM
Quote from: froggie on July 30, 2010, 08:15:15 AM
QuoteI don't know about that, but I can show you a SPUI with a suspension bridge.

Tied arch, actually...

THEY call it a suspension bridge.

"THEY" who? And aren't we just arguing semantics here?

I mean the natives of Columbus. It is on their architectural tour.
Title: Re: Modern truss overpasses
Post by: US71 on August 04, 2010, 11:18:49 PM
Quote from: Troubleshooter on August 04, 2010, 11:03:03 PM
I mean the natives of Columbus. It is on their architectural tour.

Is there a link?