Seattle has already figured out floating bridges. Now the city is about to build light rail across these moving spans.

To make an effective truss it’s crucial to build it in triangular structures. You can test this for yourself by building little model bridge support pieces out of popsicle sticks.

If we’re serious about building the infrastructure to put America back to work, we need to incentivize players with already-built workforce infrastructure to complete bridges.

Jared Cassity, who is the National Safety Director for the nation’s largest rail union, SMART-TD, agreed that having more ...