How to Build a Warren Bridge Out of Popsicle Sticks By: Isabella anderson

Materials Needed:

  • 280 popsicle sticks
  • Elmer's glue bottle
  • Rubber bands
  • Paper clips
  • 3 empty water bottles
  • Newspaper
  • Flat surface to work on

Steps:

Beams

  1. Begin by finding a flat surface such as a table and laying 1 layer of newspaper on top.
  2. Start by laying 4 popsicle sticks in a straight line on the table.
  3. Apply glue to one side of 5 more popsicle sticks.
  4. Place those 5 popsicle sticks, overlapping the bottom layer evenly with the ends longer, on top of the 4 sticks.
  5. Repeat steps 2-4 on top of this.
  6. Next, repeat steps 2-5 three more times to make 4 total beams with 18 sticks each.
  7. Let these dry for 10-12 hours depending on how much glue you applied.
These beams basically hold the bridge together. The sticks should be layed on top of each other.

Triangles

  1. Second, begin to make a triangle out of the popsicle sticks using 3 per triangle and glueing the ends together evenly.
  2. Make a total of 20 evenly shaped triangles.
  3. Use paper clips to hold the pieces together after you have glued them if it is needed.
  4. Let them dry for 6 hours.
  5. After they are dry take the paper clips off.
The triangles add support so that the bridge can hold more weight without collapsing.

Side Connectors

  1. While all of this is drying, lay 7 popsicle sticks down next to each other so that they are vertical.
  2. Glue 2 popsicle sticks horizontally but evenly spaced apart with the ends hanging out on top of those 7 sticks. (See picture below)
  3. Add another layer of 7 popsicle sticks just like the first layer on top of the 2 by applying glue to the other side of the 2.
  4. Repeat steps 1-3 three more times to make a total of 4 side connectors.
  5. Allow 6 hours of drying.
The side connectors basically do what there name says; they connect the sides together and allow the bridge to stand upright.

Top and Bottom

  1. Begin by gathering 18 sticks.
  2. Place 2 popsicle sticks in an X with one overlapping the other.
  3. Glue them together in the center.
  4. Repeat steps 2-3 eight more times making sure all the X's are the same shape and size.
  5. Glue each X together by applying glue to each end and overlapping slightly. (See picture below)
  6. You can use paper clips to hold the pieces together if it is needed.
  7. Repeat steps 2-5 to create a duplicate trying your best to make them the same size.
  8. Let them dry for 10 hours.
When glueing together, apply the glue on the highlighted spots as shown in the picture.

Connecting the Beams, Triangles, and Side Connectors

  1. After you have waited the amount of time each piece needed to dry gather them all together.
  2. Get 2 beams, 2 side connectors, and 10 triangles.
  3. Add glue to both sides at the end of a beam.
  4. Put a side connector on each end of the beam.
  5. Slide the ends of the beams into the gap of the side connectors on both sides so that they are intertwined together. (See picture below)
  6. Make sure the beam is near the bottom of the side connectors.
  7. Do this again with another beam connecting it to the top of the side connectors so that the 2 beams are connected at both ends.
  8. Next apply glue to one whole side of a triangle and at the tip that does not already have glue.
  9. Place the triangle between the 2 beams about an inch away from the end of the beam.
  10. You can use paper clips to hold the triangles down if you need to.
  11. Repeat steps 8-9 with the rest of the 9 triangles alternating upside down and upright.
  12. To build the next side repeat steps 2-10 again.
  13. Allow this all to dry for a day.
See how the triangles start an inch away from the end of the beam alternating up and down. Also how the beams are near the edges of the side connectors and sliding in between them.

Adding Water Bottles

  1. After the sides are completely dry lay them on top of each other and gently slide 6 rubber bands around them both. (Make sure they are evenly spaced apart)
  2. Then push an empty water bottle between the two sides and stand it upright. (This may be difficult to get the water bottles to fit. You will need to use a little bit of force)
  3. Do this with 2 other empty water bottles. One on one end, one in the middle, and one on the other end.
You may have to stretch the rubber bands out so that they aren't too tight around the structure.

Adding the Bottom

  1. Flip the bridge upside down.
  2. Apply glue to the the whole bottom side of the beams.
  3. Place one of the top and bottom pieces down on area that the glue is applied making sure it is in the middle.
  4. Tie rubber bands around as many places as possible. (See pictures below)
  5. Allow 8 hours of drying.

Adding the Top

  1. After waiting 8 hours for the bottom to dry, untie any rubber bands you used before.
  2. Take off the rubber bands around the bridge. You may need to cut them off if it is easier.
  3. Gently slide out the water bottles.
  4. Take the glue and apply it to the top beams.
  5. Place the last top piece on top of the area with glue. Make sure it is in the middle.
  6. Tie rubber bands wherever they are needed to hold the piece down.
  7. Let this dry for 8 hours.
  8. Take off any extra rubber bands or paper clips that are left.

If you followed all of the directions you should have built yourself a warren bridge out of popsicle sticks and glue!

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