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The Megaprojects That Even the Ancient Romans Couldn’t Pull Off: Rerouting the Tiber, Digging a Canal, and More

The Megaprojects That Even the Ancient Romans Couldn’t Pull Off: Rerouting the Tiber, Digging a Canal, and More

openculture.com 15.10.2026 11:00 5 views
Some would call the United States of America the mightiest empire the world has ever known. Yet over the past half-century or so, it has shown a strange inability to build domestic infrastructure, at least at the efficie

Some would call the Unit­ed States of Amer­i­ca the might­i­est empire the world has ever known. Yet over the past half-cen­tu­ry or so, it has shown a strange inabil­i­ty to build domes­tic infra­struc­ture, at least at the effi­cien­cy or on the scale seen else­where in the world. (This will not come as news to Amer­i­can enthu­si­asts of high-speed rail.) Here on Open Cul­ture, we’ve pre­vi­ous­ly fea­tured his­to­ry YouTu­ber Gar­rett Ryan’s take on the ques­tion of whether the U.S. is now declin­ing like the ancient Roman Empire. On a more recent video for his chan­nel Told in Stone, he’s high­light­ed the megapro­jects that even the Romans — who man­aged the Pan­theon, the Colos­se­um, and the Pont du Gard, to say noth­ing of their unique­ly long-last­ing con­crete itself — could­n’t pull off.

The Tiber may seem like a tame riv­er today, but it was­n’t always so placid. In antiq­ui­ty, rains caused it to flood every year. Sen­a­tor-his­to­ri­an Cas­sius Dio record­ed an inci­dent in 54 BC when the sud­den­ly ris­ing waters caused not just hous­es but whole neigh­bor­hoods to col­lapse.

The Tiber’s flood­ing wors­ened over time, inspir­ing Julius Cae­sar to pro­pose re-rout­ing it either around Rome or into a tun­nel run­ning beneath the city. Unfor­tu­nate­ly, the Ides of March came before work could get under­way. Augus­tus opt­ed to dredge the riv­er chan­nel, and Tiberius cham­pi­oned divert­ing its trib­u­taries.

Only the con­struc­tion of mod­ern embank­ments in the nine­teenth cen­tu­ry brought the reg­u­lar flu­vial dis­as­ters under con­trol, ensur­ing peace for strollers in search of their own dolce vita. Roman ships sail­ing to Greece had to make their way around the Pelo­pon­nese, the south of the Greek penin­su­la. The dan­gers of that stretch were many, and did their part to sink the ship car­ry­ing the Antikythera Mech­a­nism.

The Isth­mus of Corinth held out the promise of safer pas­sage, at least for those will­ing to drag their laden ships over a bit of land. Dig­ging a canal was, in some sense, the obvi­ous solu­tion, con­sid­ered by both Julius Cae­sar and Caligu­la, but “only Nero was mega­lo­ma­ni­a­cal enough to actu­al­ly begin the project.” A decent amount of progress had been made before anoth­er instance of regi­cide (or per­haps, in this par­tic­u­lar case, tyran­ni­cide) put a stop to the work. Rather than being resumed by a lat­er emper­or, the canal “became a byword for hubris” — at least until the job was final­ly done in the uncom­mon­ly ambi­tious nine­teenth cen­tu­ry.

In cen­tral Ger­many, near where the vil­lage of Wald­girmes is today, Romans found­ed a city with many fea­tures of an impe­r­i­al set­tle­ment, such as a clas­sic street grid, pipes run­ning from a cen­tral aque­duct, and a forum, at the cen­ter of which a gild­ed stat­ue of Augus­tus on horse­back once stood. Dat­ing to the year 4 BC, the city was intend­ed as a new cap­i­tal for what the Romans called Ger­ma­nia, though it end­ed up aban­doned after the Bat­tle of the Teu­to­burg For­est only about a decade after its found­ing. That image could inspire a med­i­ta­tion on what may be the way of all empires — or serve as a warn­ing to any Amer­i­can leader con­sid­er­ing immor­tal­iz­ing him­self and his horse in gold.

Extract — continue reading at the source.

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