Roadway's mysteries revealed

The ancient highway remained in use for some 2,000 years.
KOMOTINI, Greece (AP) -- Archaeologists excavating along the ancient Via Egnatia are revealing the secrets of the ancient Romans' equivalent of an interstate highway.
Stretching 535 miles across modern-day Albania, Macedonia and Greece, the stone-paved road made the going easy for charioteers, soldiers and other travelers. It was up to 30 feet wide in places and was dotted with safety features, inns and service stations.
"This was a busy road, and the Romans managed to make it completely functional," archaeologist Polyxeni Tsatsopoulou told The Associated Press.
Built between 146 and 120 B.C. under the supervision of the top Roman official in Macedonia, proconsul Gaius Egnatius, the highway ran from the Adriatic coast in what is now Albania to modern Turkey, giving Rome quick access to the eastern provinces of its empire.
Ancient engineers did such a good job that the Via Egnatia remained in use for some 2,000 years, sticking to its original course even as its paving slabs were plundered for building material. But over the last century, what's visible of it has dwindled to less than two miles in total.
Now it is being reincarnated as the Egnatia highway spanning northern Greece and set for completion in 2008. This 425-mile highway costing nearly $8 billion runs more or less parallel to the Roman road and crosses it several times.
Ahead of their time
An excavation near the town of Komotini, 170 miles east of Thessaloniki, revealed the Romans' sophisticated road-building techniques.
A central partition of large stones protected charioteers from oncoming vehicles, with similar barriers on the verges.
"This prevented chariots, wagons and carts from skidding off the road," Tsatsopoulou said.
She said drivers held the reins with their right hand and wielded their whip with the left, so the Romans made drivers stay on the left to avoid the lash of oncoming riders and keep road-rage incidents to a minimum.
There were inns every 30 to 40 miles, and post stations, the Roman equivalent of gas stations, every seven to 14 miles. "These post stations had spare beasts, as well as ... vets, grooms and shoesmiths," Tsatsopoulou said.

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