There’s a photograph we have tacked to our studio at 99% Invisible HQ. The photo, taken 1899, shows three men, all looking very fashionable, suspended mid-air on the lifted arm of a giant dredging machine.

There are plenty of images like this from this era — scenes of people standing around proudly as they shaped the earth. And in these old photos, there seems to be a real sense of awe and reverence for the marvels of civil engineering.

The above photo is a scene from the reversal of the Chicago River (see episode #86, true believers!). The reason that photo is famous — or at least famous enough for us to have seen it — is because the reversal of the Chicago River was an enormous engineering project that was successful.

But you have to figure that there were countless other photographs depicting similarly-awe-inspiring feats of engineering prowess that we have never seen — because those feats turned out to be failures.

This is a scene from another feat of civil engineering: the creation — or the attempted creation — of the Port of Dallas.

In 1892, the good ship Snag Boat Dallas of Dallas was employed to clear debris (called “snags”) out of the Trinity River in order to make the river navigable to ships. Dallas, it was imagined, it could be a port city to the Gulf of Mexico.

Dallas, though, is about 300 miles to the Gulf as the crow flies. With all the Trinity River’s twists and turns, it’s actually more like 700 miles of river.

Still, the Snagboat Dallas of Dallas was able to clear the river well enough to allow the passage of another well-named boat, the steamship H. A. Harvey, Jr.

When the H. A. Harvey, Jr. arrived in Dallas in 1893 from the Gulf of Mexico, the city went berserk. The front page of the newspaper was printed in red ink because they were ecstatic to be becoming a port city. But the Trinity River still was not easily navigable.

Dallas convinced Congress to survey the river and figure out where locks and dams could help make it navigable. The Army Corps of Engineers finished the first lock and dam in the early 1900s at a site 13 miles below Dallas. But eventually, Congress shelved the project. The locks and dams that had already been built moldered.

Then, in 1908, the Trinity River flooded, and made a mess of Dallas. As a result, Dallas hired an esteemed urban planner and landscape architect George Kessler. The so-called “Kessler Plan” would transform the Trinity River into a straight channel about a half-mile west of its existing course through Dallas. Levees would contain the new channel and open up miles of floodplain for development right next to downtown. Not all of the Kessler Plan came to pass, but the river was diverted and channeled into a 26-mile canal, as seen below:

In a series of fits and starts over the next 55 years, the Port of Dallas project kept moving forward. In anticipation of the imminent navigability of the Trinity River, new freeway bridges constructed over the river were built extra tall to allow sea-going vessel clearance underneath. But by the time the money and political clout was ready to finish the project once and for all, Dallas didn’t really need a seaport. The new DFW airport would do just fine.

So the city of Dallas moved their river from the center of town to a walled-off floodplain for a Port of Dallas which never came to pass, and for years the diverted river festered; it became a place to dump sewage, and trash, and even dead bodies. No one went there on purpose.

But now, things are finally starting to change. The Trinity is becoming a public green space. Making the diverted river easily accessible for public use is a huge urban-planning challenge for Dallas. But little by little people are starting to use the river. There are some trails for bikes and walking, and you can even take a kayak trip.