Library

Compete in a 3D bridge build-off!

Design, print and put your bridge to the test!

From March 1 through 31, the Fort Worth Public Library is challenging teens in grades 6-12 to use 3D design software to create a bridge and then build it using a 3D printer – all with tools available at libraries across the city. The winner will receive a 3D printer and the runner up will receive a 3D printing pen.

Bridges will be judged on strength (see rules and submission guidelines below).

Rules

Contest Rules

IMPORTANT: All bridge designs must be able to accommodate an S-hook, which will be used to test bridge strength. Bridges must also be printed using a Fort Worth Public Library 3D printer.
Bridges should work like a real bridge, enough that a toy car can drive up and over it.
Dimensions: Bridges MUST BE (not up to) 7 inches long, 2 inches tall and 2 inches deep.
Material: ABS filament (available at all Fort Worth Public Library locations).
Time: Maximum print time of 2 hours.

Download the rules(PDF, 647KB)

Download the Spanish rules(PDF, 655KB)

How to Submit

Submissions

Must include: design file, printed bridge and a form with contact information. The bridge will not be returned. It will be broken to determine which bridge carries the heaviest load.
Teens in grade 6-12 are welcome to enter.
A person can only enter the contest once.
All submissions must be an original creation.
All submissions must be received before libraries close at 8 p.m. Tuesday, March 31, 2026.

Submission Form

Prizes

Grand Prize

Bambu Lab A1 mini 3D Printer

Runner-Up Prize

3D Pen PRO

3D Pen PRO

3D Printing Programs

Click the button below to explore fun programs at your library!

3D Printing Programs

logo of the fort worth public library foundation

The Fort Worth Public Library Foundation generously covered the cost of all 3D printer filament for all branches thanks to donations from community members like you.