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Verrazano Narrows Bridge

By on February 6, 2015 - Modified August 20, 2016

I decided, for the 50th birthday of the Verrazano Bridge, to put together a model. I always loved the bridge; I lived in its shadow in Brooklyn for years and now live on Staten Island, so I use it often. Being a 2 year dad, I get little time to work on it, and when I do, my little girl sometimes “helps.” 🙂 So it’s certainly not perfect, and is more of a diorama than scale model. Most materials I already […]


Murrah High School’s Contest-winning Bridge

By on April 19, 2012 - Modified August 20, 2016

Hello! As promised, here are some pics of our bridge we entered into Jackson State Univ’s Mathematics & Engineering Fair (Jackson, MS). We were amongst what appeared to be a lot of other folks that were just as clueless as us about bridge building! This is our first effort, so a win is a win, right? It is made entirely of 1/8″ square balsa. It weighed 0.1 lbs (~45 g) & supported just under 10 lbs. The top chord is […]


Mr. Carlton’s personal bridge (Central High School Springfield, MO)

By on April 4, 2012 - Modified August 20, 2016

Basswood model bridge example (built by Mr. Carlton) for students competing in the MSPE competition at MSU April 4th


Ice Cream Stick Tower

By on February 10, 2012 - Modified August 20, 2016

Here is an ice cream stick structure made up from 200 sticks, which carried 30kg. of weight. Submitted by Sandip Babar. Questions from Garrett What glue did you use to build this tower? Was this just for fun and what inspired your design? Did you learn anything from building this structure that you could share with the rest of us? Thanks for sharing!


Hell Gate Bridge 1/4 Scale

By on September 12, 2011 - Modified August 20, 2016

This post features one of the most intricate reader submitted bridges I have ever received. This is a model of the Hell Gate Bridge built by High Iron Models. Excellent work.


Dombiggers 1st bridge

By on April 17, 2011 - Modified August 20, 2016

A very nice looking Balsa wood bridge sent in from one of my readers. This bridge uses gussets and pin joints and spans 18 inches.


Model Covered Bridge

By on March 18, 2011 - Modified August 20, 2016

Garrett- Jobs well done – interesting site and information! We built a 1/8″ scale model bridge just like the bridges we build for production. We successfully loaded it with 345 pounds with the weight being distributed all the way across the middle. Do you know of a formula where we can figure out that weight capacity for our full scale bridge? We have contacted 3 different engineers in our area who don’t have access to such information. Thank you for […]


First attempt at a DIY model bridge

By on November 19, 2009 - Modified August 20, 2016

It’s taken me just under 48 hours to get this far. Although i wouldn’t say its completely finished.. it’s a good as. I might just polish it off with a lick of paint and other aesthetically pleasing type things. As you can see, I’ve modeled it on the Pratt Truss. Although, I didn’t do any “real” plans, just rough drawings


Spaghetti and Straw Bridge

By on May 12, 2009 - Modified August 20, 2016

We found that it holds 5lbs so far and potentialy more, considering our first bridge broke with a large ball of string as the weight and our second broke with a coke can. I think our success rate was pretty high


Balsa Wood K Truss Bridge

By on - Modified August 20, 2016

Here is a bridge using the K truss design made from Balsa wood. This bridges uses a combination of end and lap joints. You can see that where the slanted members of each K join together at the vertical member, there is an end joint. At the top and bottom chords, the joint is a lap joint. This bridge does not have any lateral bracing on the top, which is something I would highlight to change. The performance of this […]


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