We bought an Ikea train set awhile back and Chuck loves it. The only problem is that our poor Thomas train is too big and doesn't fit under the train set's tunnel. So I poked through my trusty cardboard stash and made him a cardboard mountain bridge.
Cardboard Bridge for Trains and Cars
Aha! Problem solved.
Now all the trains can fit underneath the mountain while his cars drive over the train track. Yay!
Wanna make a bridge too? Well then keep on reading!