Ponticulus Design

Product Design and Engineering based in Cambridge. Creator of the Mathematical Bridge model, based on William Etheridge's bridge of the same name in Cambridge, England.


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The Mathematical Bridge


"is an acronym that refers to the academic disciplines of Science, Technology, Engineering and Mathematics."



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About the Model

About the Model

The model of the Mathematical Bridge took around 2 years to design for production. It contains 81 pieces fixed to a single frame which are then cut out by the builder to be slotted together and glued to fix in place.

All pieces are injection moulded using ABS plastic (as with keyboards and mice) with a high tolerance to ensure a tight fit on all parts. The other benefits of using this material are its abilities to adhere to paints and glues and its durability and strength. The bridge can be purchased in white or black, with white being the better option for enthusiasts who wish to paint it with a realistic finish.

Ease of assembly was paramount to the design of the final product and it is recommended for ages 14+, however, it is a great project to complete with children of all ages under adult supervision. The project can be completed in roughly 8 hours and to help you along the product comes with a detailed instruction manual.

Designed as an ornamental model, educational tool or an activity for a rainy day, the bridge is ideal for model enthusiasts, budding engineers, teachers, and parents who want to introduce their children to STEM (Science, Technology, Engineering and Mathematics)The project gives a satisfying end goal for the builder and the finished model gives a great sense of accomplishment.

High Quality

The model parts are constructed from ABS plastic for it's high strength and durability


The bridge is a challenging and engaging project for any modelling or engineering enthusiast


The project is ideal for hobbyists, teachers, parents and engineering enthusiasts.


The construction of the model is a great tool for evolving the understanding of engineering for pupils


The bridge may look complicated, but the construction is intuitive and logical


The bridge is surrounded by historical fact (and fiction!)



Below you can find images of the product in it's various states. Click on the images to enlarge.

Man vs Bridge

Man vs Bridge



Please use the videos below for detailed instructions or, alternatively, download the PDF here



The Mathematical Bridge has a rich heritage. Below you can find interesting facts about the bridge, how it came to be and how it continues to influence.

First Traces

The bridge's earliest origins could be linked to a bridge in China although the only records are paintings.

Modern Version

This is a modern version of the bridge in the painting in Kaifeng Hong in China


Leonardo Da Vinci adapted the design of the Chinese bridge and it has become the better known of the two.

First Recorded

The first recorded evidence of a bridge of this type is Walton Bridge, designed by James King and the future designer of the Cambridge Mathematical Bridge, William Etheridge.


James King used the concept to support bridges during their construction, almost like a scaffolding. The image on the left shows this during the construction of the bridge over the thames at westminster.


Etheridge designed the bridge in 1748, however it was James Essex the Younger who actually built the bridge in 1749, where the Garret Hostel Bridge stands today between Trinity and Trinity Hall.


The bridge was rebuilt in 1866 in the current location.

Current Version

Again, the bridge was rebuilt in 1905 and now sits in it's current location at Queens' College. The bridge measures 15.44m long and crosses over the river Cam.

Version in Karby

Among various copies of the bridge, there are notable versions in Karby...

Version in Oxford

One in Oxford...

Version in Wightwick

And one in Wightwick.

About Me

About Me

I am an aerospace engineering graduate and I am looking to find a rewarding place to fit in within the industry of engineering by helping people realise their engineering and modelling interests. I have worked in education (teaching young children), engineering (CAD/ CAM) and also tourism in Cambridge punting around the mathematical bridge, where I came upon the inspiration to create the Mathematical Bridge model. I am interested in creating an excitement for structural design, engineering and manufacturing and I believe this product is a great resource to educate and entertain.

Contact Us

Contact Us

If you have any questions about the model from where to purchase to technical support, please use the form below or any of the contact details provided.

Cambridge, UK

phone: 07835 085219


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