Make sure to build sections on the extended abutment. Otherwise the build process does not mirror real life effectively.
Remove one packaged up section from box.
Undo packaged section and lay pieces out.
Match the R raker for that section, with the R section of truss.
Make sure it is attached to the cross brace (this should already be the case), and push the cross brace through the hole in the middle bottom of the truss.
Grab a nut (one of the small ones) and make sure the hole in the top of the raker is roughly lined up with the small bolt in the top of the truss.
Push the bolt through the hole in the raker and secure with the small nut you grabbed before.
Slide the other truss section on to the cross brace, taking care that the bolts have their long ends point away from each other.
Insert a wooden pin on the outside of the cross brace you just inserted to make sure it doesn't move.
Line up the L raker with the side of the cross brace and top of the truss section.
Attach the bottom of the cross brace to the outermost hole on the cross brace and secure with a small nut and bolt.
Line up the hole in the top of the raker with the bolt in the top of the truss section.
Secure with a small nut.
Pick up a small cross brace.
Push it through the holes at the end of the section and insert the pin into the end that is missing one. The other end might also be missing a pin so insert one there too if necessary.
Retrieve the section of flooring that was in your package.
Put flooring on to the section of bridge you have just completed.
Repeat steps 1 to 20, seven more times.
Line up sections light blue and green (numbers 2 and 3) with light blue being the one with the prongs out the front. Make sure to remove the flooring as it gets in the way for the next few steps.
Push the male end of one section into the female end of the other on both sides.
Pick up a big bolt and nut and push it through the hole in the middle of the male-female connection (it may take a bit of fiddling to get the holes to line up right so don't worry if it doesn't go in smoothly the first time)
Insert bolt into the hole and secure with screw
Make sure the head of the bolt is on the inside of the bridge.
Tighten with screwdriver and 7mm wrench tool (It should say 7mm lightly on the side of the wrench tool).
Repeat steps 23 - 28 for the bottom hole on that side.
Then, repeat steps 23 - 29 for the other side of the bridge as well.
Two sections should now be connected.
Place the flooring on the two sections you just created.
Slide out across gap until balanced.
Connect white section of bridge (labelled 4) and the red section of bridge (labelled 5) the same way and place on flooring.
Push out across the gap.
This red section you put on is the middle section. So put the piece of flooring with a hole in it on this section.
Connect the yellow section (labelled 6). Push out again.
Connect the purple section (labelled 7). Put flooring on the next section.
Push out across gap.
Connect the last section, section blue (labelled 8). Put flooring on and push out across gap.
Next, you need to take the Ziploc bags and small spades out of the box and start shoveling sand into them from the bucket provided. Then, place these bags (when zipped up) on the end section of the bridge. This will act as a counterweight to take some of the weight of the bridge and help you push it across. It will not take all the weight, however. So be careful.
Finally, after the bridge has been fully assembled and pushed out, slide the long piece of dowel that is remaining in the box through the two brackets on the connection plate, making sure to pass the dowel underneath the floor.