Although they had but that moment left the school behind them, they were now in the busy thoroughfares of a city, where shadowy passengers passed and repassed; where shadowy carts and coaches battled for the way, and all the strife and tumult of a real city were.
There are no more uses of "thoroughfare" in the book.
Show samples from other sources
In obedience to them, in the silent heat she walked down Maycomb’s main thoroughfare, a highway leading to Montgomery.
Harper Lee -- Go Set a Watchman
I race past all of them, down Serra’s main thoroughfare, through the dwindling crowds of Execution Square, and up the cobbled streets of the Illustrian Quarter.