Seventh-grader Jacoby Yliniemi dropped a bowl of sand into the bucket being held up by his group’s toothpick bridge, bit his lip and then relaxed. The bridge was safe. At least for a second. Another ...

These are arcs of toothpick triumph. At Manos House, a Lancaster city drug- and alcohol-treatment facility for teenage boys, residents bridge an uncertain past for a more positive future - even with ...

Model a deck-truss arch bridge. The bridge in the segment is an under-deck-truss arch design. To help students understand what gives a bridge its strength, and the specifics of the Minneapolis bridge ...