As a useful aside: Civic planning prior to automobiles being common was no where near as standardized as it was following The Great War. Broad streets were a mark of pride for a community. After autos became common, things like marked lanes and speed limits started to appear.
Streets tended to be made of what was easily available and cheap in the area, tempered with what worked. Tarmac was common, as was brick and cobblestone. In Florida, Georgia, and Alabama, it is common to find roads covered in shells instead of gravel. Roads made with a layer of smooth stone gravel covered with sharp stone gravel. The smooth stone was for drainage and the sharp stone compacted to a firm stable surface.
Along that line, let's not forget the notorious Georgia roads that used marble chips for the aggregate. Cheap and worked OK as long it was dry weather. But as that marble wore down and aged, it became polished and glassy slick when the rains came.
There was no backdoor at the Alamo. Planet Earth doesn't have one either. Fight and win or DIE!
I had a major accident whilst stationed in Okinawa - were they use ground coral and sea shells as the basis of their roads. Once wet (common during monsoon season) its glass for anything going over 5 mph. Just a personal note. I was fortunate, no one hurt, and as we (the local cab driver) & I were both 'professional drivers' by their standards, and it was determined to be unavoidable, no arrest was made, just a warning.