Bridge building in balsa

Discussion in 'N / Z Scale Model Trains' started by Gavin Miller, Dec 1, 2002.

  1. Gavin Miller

    Gavin Miller Member

    Here's a view from the other end.

    Hmm ... a problem of perspective. The broken lines on the road appear to get l-o-n-g-e-r as they get further away, even though they are in fact all the same length. An optical illusion created by the brain's need to perceive "distance".

    If it was only possible to view the road from the front, I would just progressively shorten the lines into the distance, but this bridge will also (usually) be viewed from the side.

    What to do? I may decide to make it a wide 2-lane bridge (with shoulders) and forget about the broken lines.

    Attached Files:

  2. upguy

    upguy Oregon Western Lines, CEO

    Looks good to me. I wouldn't worry about the broken lines. Every critic has to have something to complain about. If the lines get noticed all you have to do is reassure them that you are aware of the problem and that it is caused by an opticial illusion.

    What I noticed more is: Here in Oregon the double lines between opposing traffic are yellow not white. But if it is right for what you are modeling, who am I to say it shouldn't be done that way. ;)
  3. Gavin Miller

    Gavin Miller Member

    Yes, I have noticed in photos that other localities have double yellow lines.

    I am used to seeing double white lines, as is the practice here in Western Australia, so I've gone with what I'm familiar with for my "freelanced" locale.
  4. Wyomingite

    Wyomingite Member

    Hi Gavin,

    Thats one beautiful piece of work you did there and I was very impressed to say the very least. Keep those pictures coming as we all really enjoy them. I wish the Wyoming Highway Dept. could paint our lines that neat. Keep up the wonderful work.

    Ron :cool:
  5. alex_mrrkb

    alex_mrrkb Member

    What about using unbroken lines ? Will only mean thant this is a no-passing zone wich is a good idea on a curved bridge :)
  6. Clerk

    Clerk Active Member

    Gavan. You really did a great job on that overpass. Also I love the background scenery.
  7. Sir_Prize

    Sir_Prize Member

    :D :D :D
  8. Gavin Miller

    Gavin Miller Member

    Thanks guys!

    I have changed my mind.

    The MRD (Main Roads Department) has resurfaced this bridge with just two (wider) lanes and concrete breakdown shoulders.

    The wider lanes look more suitable for heavy vehicle traffic on a bridge that services an industrial area.

    Solves the optical illusion problem as well - no broken lines.

    Attached Files:

  9. Tyson Rayles

    Tyson Rayles Active Member

    Gavin that is really nice! :cool:
  10. davidstrains

    davidstrains Active Member


    That is one fine piece of engineering and construction work. It was also probably done on time and below budget which would give the construction company a big bonus.:) :)
  11. Drew1125

    Drew1125 Active Member

    You've made everything come together so well, Gavin!
    A fantastic looking scene!
  12. aartwmich

    aartwmich Member

    Absolutely beautiful Gavin!! The road looks MUCH better with two travel lanes and breakdown lanes.

    You are an inspiration, no doubt. Your step by step construction photos satisfy my need to know 'HOW did they DO that?!?!'

    Now I need to know....what happens where the road comes down to the table??
  13. Gavin Miller

    Gavin Miller Member


    You're too kind!

    At the moment the bridge/road ends where it meets the table (I WAS only trying to hide the hole in my backdrop you know, LOL).

    Now my next project is to work on the flat surface around the truck terminals (which, you may have noticed, are not actually properly built yet) and connect the surface roads to the bridge.

    I also want to "bury" the layover tracks adjacent to the mainline in "dirt", leaving just the railheads showing.

    Here, an articulated Light Rail Vehicle heads under the bridge.

    Attached Files:

  14. redracer

    redracer Member

    Yes - well done Gavin, it's a great job !!! One day I'll have to come over and see your layout ...

    Having seen the picture of your Granddaughter running Thomas, what are you going to do with the 'hole' at the other end of the layout?
  15. Gavin Miller

    Gavin Miller Member

    Still thinking about that Doug...

    Another bridge or some big trees ...
  16. guppyman

    guppyman Member

    I've watched this thread with interest for a long time... I've gotta say you've done some amazing work Gavin!

    This would be a great how-to article if you ever decided to write it up.
  17. spitfire

    spitfire Active Member

    Wow, Gavin! Beautifully done! I have to check out this n-scale forum more often. It's really great to see the in-progess photos too. Makes me think I better get busy on that underpass of mine.

    :D Val
  18. Donn Welton

    Donn Welton Member

    Light benchwork

    On the issue of light wood for benchwork, take a look at
    and begin with earlier weeks (on the bottom). What kind of wood and how thick do you do you think this is? As I am about to begin benchwork I am wondering whether this kind of gird underframing is a good idea.
    P.s., this is fascinating documentation of the construction of the Minatur Wunderland layout in Hamburg
  19. Tileguy

    Tileguy Member

    What a superb Job!! The overall effect really works well and the modelling is exquisite.My hat is off to you on a fine Job.I cant wait to see your next endeavor. :)
  20. Gavin Miller

    Gavin Miller Member

    Re: Light benchwork

    Hmmm ... sorry Donn. I got completely lost at that site. Probably because I need a few lessons in ... German (?)


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