Think Bridges (Not Walls)

I love the way this writer describes the feeling of going over a bridge: (brief article & slideshow) Best Bridges in the World

a little footbridge
Bridges mean exploring. They mean connecting. They represent not letting barriers keep us from seeing new places and meeting new people.




Harper’s Ferry, West Virginia

(Windows have a similar feel to me, albeit in a less active way. Looking at what’s going on “out there.” Or looking at what’s going on “in there.” Windows keep us from feeling isolated.)1AE35EC1-A74A-4C59-B20A-A7D2834F8195

I grew up in Michigan and remember the thrill of crossing the Mackinac Bridge, looking out the backseat car window (see above) at the shimmering water all around and at the suspension cables and realizing just how vast the lakes are and how much bigger the bridge is than you thought it would be.

The Mackinac Bridge connects Michigan’s lower and upper peninsulas. This photo was taken on a Labor Day, when they allow pedestrian traffic for a fun run.

Now, I live near Chicago, a city of drawbridges that keep things moving across and along the river downtown. Beauty and function and connecting us all. 200C1AD4-77BA-4EB5-BE02-8477FEC65F8F

What’s not to like about a bridge?


What Is a Box Girder Bridge, Anyway?

Dumbarton Bridge

The Dumbarton Bridge over the San Francisco Bay is a large box girder bridge.

In The Pickwicks’ Picnic, the family is on the road, heading for a box girder bridge. What’s a box girder bridge, anyway? And why is it so fun to say?

Box girder bridges are very common. You might cross one all the time and not even know it. The name comes from the fact that the girders–the steel and/or concrete parts that support the bridge deck–are shaped like a hollow box.

“A box girder is formed when two web plates are joined by a common flange at both the top and the bottom.” —

Does that clear things up? No? Personally, I feel that any definition of a thing that mentions something called a “flange” is not going to help me to picture it at all. But the point is, box girders are often used in bridge building. When seen in cross-section, they look like this:

Box girder cross sections

Cross sections of box girders

Sam Houston Waterway Bridge

This is a big box girder toll bridge over the Sam Houston waterway in Texas. It is also described, apparently, as a cantilevered concrete trapezoidal haunched hollow box girder bridge.

Got it now? No? Well, don’t worry about it. Anyway, just trust me, box girders are a popular option for constructing bridges, both large and small. The boxes, or cells as they are sometimes called, make the bridge super strong.

Why is it so fun to say? Box girder bridge, box girder bridge. I think it’s because it has a great rhythm to it, like a waltz, one-two-and-three, one-two-and-three. And it also uses alliteration, with the words that start with B. No matter what, you’d have to agree that “box girder bridge” fits better into the words of the book than “cantilevered concrete trapezoidal haunched hollow box girder bridge” (which is a real thing).