Lay a strip of pasteboard six inches wide across from pier to pier, allowing the ends to rest on the piers, but not extend beyond the outside end edges of the piers; then if your span is fourteen, inches long, cut from a pasteboard box two more strips fourteen inches long and of the same width as the span; score each strip across one end, one inch from the edge, bend slightly and fit the bent edge of each strip on one end of the bridge, allowing the other end of the strip to extend away from the pier and rest on the floor, forming an inclined approach to the bridge proper as in [Fig. 77].
When your pasteboard strips are well settled in place, continue building up the piers on top of the pasteboard, making each group of three spools two layers high; then build up one spool two layers high on top of the four columns.
Fig. 78—Span the two columns with this.
Complete the archway by spanning the two columns of each pier with a narrow strip of stiff white paper bent up into a point at the centre and out into a flap at each end ([Fig. 78]). The flaps rest on top of the spools. The photograph shows how the entire bridge should look, and in the photograph you will find a little lady hurrying across the bridge on her way home, and following in her wake Mr. Clothespin and Mrs. Clothespin. A paper boat under the bridge would make the scene more realistic.
Next build
A Memorial Arch
([Fig. 79]), something like the one which was erected in New York City. Commence with two groups of spools a short distance apart; have three in each group, two in the back and one in the front. Build up columns four spools high; then lay a strip of pasteboard across from one to the other. On top of the pasteboard place two more groups of smaller spools a little nearer together than the first groups. Make these columns two spools high and crown each with a single spool decorated with a bright-colored paper flag fastened on a stick pushed down into the spool. At the base of the arch add three more spools on each side, o and o ([Fig. 79]), and the structure will be completed. This is not exactly like the original, but for a spool arch it is fine, and a spool procession will feel honored to march through it.