New Through Truss from Atlas & October Announcements

[pfs]

Yes the Master 50' Precision Design Box Cars look nice. And come in 'primer' as well!

[asarge]

This is dead on for the C&O's Licking River Bridge between Newport and Covington Ky. Except I need it to be Double track! Hopefully Atlas or somebody will consider a double track version.

[inkaneer]

Why is the height clearance on the C55 bridge a scale 3.3 feet shorter than the C80 bridge? [C55 - 1 11/16" vs C80 - 1 15/16"]

[wm3798]

Sounds like a typo.  Should be reversed... c80, fatter ties and taller rail... not sure if that totals out to 1/4" though...

Lee

[up1950s]

Through truss bridges were more costly to install for some reason , and if there was room a deck truss was the default of the two . Oddly we see very few decent long span deck trusses on N . Yes I am aware of the vertical compression model railroads have , but we still could use a good deck truss , both single and double track of a 150 to 175 foot length .

[Ian MacMillan]

Ou...I can see myself getting lots of these as they do more road numbers.

[Sokramiketes]

Sounds like a typo.  Should be reversed... c80, fatter ties and taller rail... not sure if that totals out to 1/4" though...

Lee

No, look at the artwork.  The Cd55 (brown) bridge has more prototypical stringers under the track.  The Cd80 (black) looks like it purposely has the track lowered, probably for Ntrak or oversize standards?





Either way, Cory + Solidworks = gold

[GaryHinshaw]

From the A-board:

The Code 55 and Code 80 versions have different floors. We had to make it so that the Code 80 version works with our bridge piers. So that design is almost identical to the HO 18" Through Truss Bridge. The Code 55 version follows the prototype more closely. Hopefully I'll have actual photos to show off in a couple of weeks.

Cory Rothlisberger
Product Development
Atlas Model R.R. Co.

[wazzou]

I think if anything, I'll be able to utilize this bridge in a couple of spots for highway travel.  I'd be interested to know the interior width of the bridge if someone has found those figures.  I have not been on the A Board to see if they list them.

[Sokramiketes]

I think if anything, I'll be able to utilize this bridge in a couple of spots for highway travel.  I'd be interested to know the interior width of the bridge if someone has found those figures.  I have not been on the A Board to see if they list them.

Based on the gauge of the track being about 1/3 the overall interior width... 27mm ± a skosh  

[inkaneer]

C55 version vertical clearance is 1 11/16 inches.  I'm getting a clearance of 22.5 scale feet.  Is this sufficient for double stacks and/or autoracks???

[wazzou]

Skibbe said...
Based on the gauge of the track being about 1/3 the overall interior width... 27mm ± a skosh  


So...that's less than 15' wide.  Hardly enough room for two lane rural highway travel, even in the fifties.  I'll have to look at one when they hit the shelves to evaluate more closely I guess.

[up1950s]

Skibbe said...
Based on the gauge of the track being about 1/3 the overall interior width... 27mm ± a skosh  


So...that's less than 15' wide.  Hardly enough room for two lane rural highway travel, even in the fifties.  I'll have to look at one when they hit the shelves to evaluate more closely I guess.

On the Northway , which goes north of Albany to Canada there is a set of bridges  commonly called the twin bridges . You could solve your problem that way .

[termite]

There used to be a one lane bridge on a rural road near my home that looked exactly like this. The Mansion bridge was, oddly enough, over the railroad with very sharp curves leading to the bridge on either side. More than once I've had to slam on brakes as I came onto that bridge because of another car already on it, coming the other way.

[wazzou]

It could certainly be suitable for one lane of travel, but doesn't look as though it would be for two. 
I think the bridge structure is a little too stout looking for a single lane bridge.
Most and there were/are many here in the Pacific NW were built early in the 20th century, usually had weight limits, were typically decked in wood originally and looked spindly.
Some were of the pin connected variety.

Like this


I was looking for something like this built in 1939, though 240 feet long, visually close enough.  Still in use today, by the way.