1 Out of Every 9 Bridges in the US Is Structurally Deficient

There are about 630,000 bridges in the United States, ranging from impressive new structural creations like Margaret Hunt Hill bridge in Dallas to deteriorating slabs of concrete in desperate need repair. It's that last growing group of bridges, ports, and highways that represent the slowing decaying infrastructure… » 11/25/14 2:32pm 11/25/14 2:32pm

Mad man rides motorcycle over a bridge's arch beam

Bridges to normal humans are things that make life easier because they connect things that, well, don't connect. We get on it and we get to the other side. Bridges to this professional stuntman are obstacles meant for epic stunts, like riding a motorcycle on top of one of the bridge's arch beam! » 10/08/14 11:45pm 10/08/14 11:45pm

Ingenious Design Lowers the Water Under a Bridge to Let Tall Ships Pass

Most bridges are compromises: Cars want to speed low and straight across the water, but but boats want to pass under them. So we wind up with either tall bridges (expensive) or moveable bridges (clunky and awkward). But now a Dutch engineering firm has come up with a radical solution that doesn't involve the… » 9/25/14 4:20pm 9/25/14 4:20pm

A Swarm of Tiny Bots Could Inspect the Hidden Underbellies of Bridges

America's bridges are not—we're sorry to report—doing so great. Of the over 600,000 bridges in the U.S., more than half are over 30 years old, and 11 percent are structurally deficient. That makes inspecting bridges all the more important; unfortunately, the underside of a bridge is also pretty damn inaccessible to… » 9/25/14 1:15pm 9/25/14 1:15pm

You'll Never Find The (Unofficial) Oldest Bridge In New York City

The picture above is not, unfortunately, the oldest bridge in New York City. It's a picture of the Manhattan Bridge, arguably the prettiest in the area, under construction in 1909. While that's plenty old, it's still not the oldest bridge in New York. Not by a longshot. And you'll never find it. » 8/09/14 2:34pm 8/09/14 2:34pm

20 Stereograms That Bring the Great Bridges of the 19th Century To Life

In the early decades of photography, stereoscopy was a very popular technique for creating the illusion of depth in photos. These early "3D" images must have seemed like magic, and photographers wasted no time documenting the wonders of the day in this glorious new format. The boom in bridge-building technology… » 6/02/14 9:00am 6/02/14 9:00am

1980s Architects Wanted a Restaurant On Top of the Williamsburg Bridge

The Williamsburg Bridge has spanned the East River since 1903, connecting what's now Brooklyn's most notoriously hip(ster) neighborhood to Manhattan. In the 1980s, the bridge was in serious disrepair—and architects wanted to replace it with a mirror-finish masterpiece topped with a restaurant. Imagine the view! » 5/10/14 10:00am 5/10/14 10:00am

The Plan to Keep People From Jumping Off the Golden Gate Bridge

More people have committed suicide on the Golden Gate Bridge than on any other structure in the world—someone jumps from the bridge to their death about every two weeks. But those figures could be dramatically reduced if a proposed suicide-prevention barrier is installed later this year, as advocates hope. » 4/17/14 3:20pm 4/17/14 3:20pm