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You probably don’t give it a second thought, but your daily walk through the neighborhood is filled with strange, bizarre, and surprising discoveries. Sure, you might think it's just a sidewalk, but what could be so odd about strolling around the block—other than avoiding cracks in the pavement and the occasional forgotten dog waste left behind by a less-than-considerate neighbor?
And let’s not forget the whole car culture. Americans have a deep love affair with their vehicles, and when we're not walking, we’re driving through our neighborhoods. (Hopefully, not speeding too much!) We often don’t realize it, but every little detail of our daily drives is carefully planned and managed by governmental bodies that design and upkeep the roads.
The truth is, the seemingly ordinary features of your neighborhood are actually filled with intricate, sometimes surprising stories. Today, we’ll dive into a collection of fascinating, lesser-known facts about streets, sidewalks, and other everyday urban features. After reading through this list, your morning walks and daily commutes will never look the same again!
10. What’s the Difference Between a Road and a Street?
When walking along the sidewalk, are you on a road, a street, a parkway, a lane, a boulevard, or a ‘way’? These distinctions are more significant than you might realize. While it might seem that these terms are interchangeable in the modern world, historically, they had precise meanings. Today, the differences between ‘street’ and ‘road’ are much more blurred, but in the past, they were quite clear.
A 'road' refers to a path that connects two different towns or areas. In contrast, a 'street' is a paved pathway within a town, typically bordered by buildings and homes. A 'boulevard' is a major thoroughfare within a city, often used as a primary route for people commuting to work or other destinations. A 'parkway' is a scenic road, often lined with trees, where traffic flows in lanes divided by a grassy median.
The distinction between ‘boulevard’ and ‘parkway’ isn’t as rigid as with ‘road’ and ‘street.’ Additionally, the rules governing these terms aren’t as strictly enforced as they once were. You’re more likely to see variations in naming conventions today than you would have in previous decades. However, the origins of these distinctions are deeply rooted in the historical development of cities, and they once played a crucial role in urban planning and growth.
9. The Fascinating Squirrels
On just about any sidewalk in the United States, you're bound to encounter a squirrel or two. (Or perhaps three, four, or even a dozen.) These furry, bushy-tailed creatures leap from tree to tree, scurry across the ground, and boldly dart in front of cars to cross the street in hopes of surviving another day. They’re avid nut-eaters, of course, and their frantic pace of gathering food and evading cars, dogs, and other street-related dangers makes us tired just watching them. How do they manage to move so quickly and frantically all the time? Take a break, little one!
The rapid movements of squirrels aren't limited to their physical actions. In fact, their quick reflexes extend to processes we can't even observe. For example, a healthy adult squirrel’s front incisor tooth grows at a rate of about 6 inches (15 cm) per year. To put this in perspective, human hair grows at a similar pace—about six inches annually. Now, imagine that speed, but with teeth. Quite frightening, isn’t it?
For squirrels, this rapid tooth growth is a matter of survival. They’re constantly chewing and gathering food, like nuts, throughout the day. To keep up, they need strong teeth that can regrow quickly and stay sharp, since they wear them down so fast. Their constant eating, foraging, and scavenging keeps their teeth in a perpetual cycle of growth and wear—always replenishing while simultaneously being ground down for the next round of growth.
8. From Strata to Streets
The term ‘street’ has undergone an intriguing transformation over time. Initially, it was the Latin word ‘strata,’ used by the Romans and derived from an earlier Greek term. The historian Eutropius, who lived in the fourth century, was one of the first to document its use. The word 'stratæ' in his era was a shortened form of ‘via strata,’ which meant ‘paved road.’ This root word gave rise to other English terms like ‘stratum’ and ‘stratification.’
Interestingly, the word ‘street’ we use today, derived from ‘strata,’ is one of the few words that has continuously spanned from ancient Roman and Greek times into modern usage. Germanic peoples borrowed ‘strata’ from Latin, which eventually evolved into two forms: ‘strasse,’ which remains in use in modern German, and ‘stret,’ the Old English version. Today, we use ‘street’ in the U.S. and English-speaking countries around the world—and that’s how we’ve arrived at where we are now!
7. Timing the Light
There’s always that moment when you’re in the middle of a drive and the green light ahead turns yellow. Do you immediately hit the brakes and come to a stop? Or do you press on the accelerator, hoping you’ll make it through safely? We all know what the DMV tells us during the driving tests, but let’s be honest—most of the time, we’re just eager to reach our destination. That’s when we decide to race through the yellow light. However, what you might not realize is that the yellow light itself plays a key role in this whole equation.
In fact, cities have already pre-programmed how long the yellow light will stay on. The duration of the yellow signal isn’t universal across every intersection. It actually varies depending on the speed limit of the street in question.
For example, on roads with a speed limit of 55 mph (88 km/h), yellow lights remain active for more than five seconds. On the other hand, if the speed limit is only 30 mph (48 km/h), yellow lights are set to last just three seconds. And before the green light activates for the opposing traffic, there’s a brief period where both directions are on red, lasting anywhere between one and three seconds. So, remember to stay cautious!
6. The Origin of Stop Signs
Stop signs didn’t always look the way we’re used to seeing them today. Back in the 1920s, they were known as “boulevard stops.” At that time, they weren’t red and octagonal but instead black and shaped like diamonds. These early stop signs were commonly placed along major urban roads.
However, there was a problem for those who lived on the boulevards where these diamond-shaped signs were installed: Drivers on the right-of-way, who didn’t have these boulevard stops, would speed down the road recklessly. They knew they wouldn’t have to stop for anything, so they raced ahead, trusting that others would stop for them.
Rather than abandoning stop signs altogether, city planners and law enforcement officials across the U.S. decided to install more of them. And not long after, stoplights began to spread across the country as well. But this isn’t the full story! After all, stop signs aren’t diamond-shaped or black anymore, and there's a reason behind that!
In the early 1920s, officers in the Detroit Police Department decided to cut the corners off the diamond-shaped stop signs. Their goal was to improve safety and make the signs more noticeable to drivers. They wanted the stop signs in their district to stand out, especially since other traffic signs at the time also shared the same diamond shape.
The black color of stop signs didn’t last long either. Initially, it was replaced with a yellow color. But by the late 1940s, the introduction of fade-resistant red paint made stop signs even more visible. By 1954, a nationwide regulation required all stop signs to be red with white lettering—creating the iconic stop sign we recognize today.
Sidewalks have been around far longer than you might think. In fact, they are ancient, stretching back over 4,000 years. It’s not just a modern convenience. The Greek city of Corinth, as early as the 4th century BC, already had sidewalks in widespread use. Later, the Romans introduced their own version, called 'sēmitae,' and expanded them throughout their empire. These paths allowed pedestrians to move safely amidst the bustling traffic of carts, horses, and merchants in busy cities.
Think sidewalks are a recent invention? Think again! Sidewalks actually date back more than 4,000 years. The city of Corinth in ancient Greece was already using sidewalks by the 4th century BC. After that, the Romans took the concept further, constructing their own pedestrian pathways—known as sēmitae—and spreading them throughout their empire. These sidewalks gave people a safer place to walk as traffic filled the streets with carts, horses, and other daily commerce.
After the Roman era, during the Middle Ages, roads and sidewalks saw significant changes. Most streets in Europe became narrower, and there was little distinction between pedestrians, carts, and horses. However, everything began to shift in 1666 following the Great Fire of London. City officials began working to restore order, and across Europe, city planners focused on improving street safety and hygiene. By 1671, London had laws in place requiring streets to be paved with cobblestones, which helped separate pedestrians from traffic.
In the late 1700s, the British House of Commons passed legislation known as the Paving Acts, marking a turning point for sidewalks. The 1766 Paving & Lighting Act granted authority to London’s officials to develop sidewalks and paved walkways throughout the city. This act also introduced raised sidewalks, creating curbs to separate pedestrians from the vehicles traveling through the middle of the streets.
Other countries in Europe quickly adopted their own sidewalk regulations to ensure pedestrians were safely separated from faster-moving traffic. By the mid-19th century, sidewalks were becoming more standardized across European cities. They were larger, more distinct from the road, and better constructed to meet the needs of a growing urban population.
Street signs are a common sight in nearly every part of the country—be it cities, suburbs, or rural areas. These signs help guide us with the names of the streets. While familiar names like 'Main Street,' 'Maple Street,' 'Lincoln Street,' and 'Martin Luther King Jr. Blvd.' can be found across many cities, there's a surprising winner when it comes to the most common street name in the U.S. It’s not any of those we mentioned—it's 'Second Street!'
You might assume 'Main Street' is the most common street name in America, or perhaps 'First Street' since logically, a 'Second Street' can't exist without the original 'First.' But here's where the stats get tricky: if you combine 'Main Street' and 'First Street,' that combined tally would actually be the most popular street name in the country.
You might expect 'Main Street' to take the top spot for the most common street name in the U.S., or maybe 'First Street,' as a 'Second Street' typically follows 'First.' However, when you add 'Main Street' and 'First Street' together, they emerge as the dominant name. The catch is, each of those are counted separately, which creates a scenario where 'Second Street' comes out on top.
Here’s the catch: combining 'Main Street' and 'First Street' isn’t allowed since they are distinct names. So, when counted individually, their totals are split. The surprising result is that 'Second Street' rises to the top, outpacing both of the other names. This happens because different cities may have unique ways of naming their first street, which means 'Second Street' often takes the number one spot.
Concrete has been a key element of construction for centuries, but it presents a series of challenges for those who work with it. How can we unlock the potential of concrete while also addressing its limitations? This 'Concrete Conundrum' continues to puzzle architects, engineers, and builders as they seek innovative solutions in the world of construction.
Concrete is an incredibly ubiquitous material. Every year, humans produce more concrete than any other manufactured substance on Earth. The production of concrete amounts to billions of tons annually. Some estimates suggest that for every person on the planet, 3,000 pounds (1,360 kilograms) of concrete are produced each year! This makes concrete the most widely produced material, surpassing the combined output of steel, wood, plastic, and aluminum. That’s an immense amount of concrete!
Concrete is also incredibly sturdy. The typical sidewalk is constructed with concrete that’s about 4 inches (10 cm) thick. Driveways and other roadways that accommodate vehicles tend to have concrete that’s 6 to 8 inches (15 to 20 cm) thick. Meanwhile, highways and freeways are often made of concrete that's up to 11 inches (28 cm) thick to endure the constant wear and tear caused by the thousands of cars that drive over them. As concrete continues to cover more of the Earth’s surface, it’s becoming a growing concern for environmentalists who are thinking about its long-term effects on future generations.
What’s even more astonishing is that concrete, at least as we know it today, was once forgotten for nearly a thousand years. The ancient Romans were the pioneers behind a concrete recipe that allowed them to build remarkable structures like the Pantheon, which still stands today. Their concrete was incredibly strong and durable. But did we take that Roman recipe and improve it over the centuries? Surprisingly, no!
After the fall of the Roman Empire, the secret formula for their incredibly strong and durable concrete was lost for over 900 years! And we’re not talking about something as trivial as misplacing a recipe book—it was a literal disappearance of knowledge, one that lasted for nearly a millennium!
Then, in 1414, monks at a Swiss monastery stumbled upon a book titled On Architecture, and there it was—the lost recipe for Roman concrete, laid out for all to see. This rediscovery sparked a renaissance in concrete construction. Thanks to this rediscovery, we’ve been able to use the Roman concrete recipe with great success ever since, but it was almost lost to history entirely!
2. The Decline of Mailboxes
If you live on a typical urban street in the U.S., you may notice a mailbox or two placed along the sidewalk. But the key word here is 'may,' because these iconic blue USPS mailboxes are no longer as common as they once were. In fact, every year, more and more of them vanish from street corners, and at the current pace, it’s possible that the only place left to find a mailbox might be at the post office itself!
While the USPS manages and delivers a staggering number of mailpieces every day, they are no longer as eager to keep mailboxes out in public. In fact, over the last 20 years, the USPS has removed more than 250,000 of their trademark blue mailboxes from street corners. When you think about it, this is a striking change to the landscape of a neighborhood walk—remember the simple joy of dropping a letter in a mailbox while out for a stroll?
The USPS points to several reasons for this mailbox decline, with the internet being the most significant. Thanks to email, texting, social media, and video calls, fewer people are relying on traditional mail. And considering the reduction of mailboxes began in the early 2000s, it’s clear that digital communication has played a major role.
Though large-scale mailers still send billions of pieces of paper mail each year, the everyday person isn't sending mail as frequently as before. Consequently, the familiar sight of blue mailboxes on street corners is becoming a relic of the past. The ones that remain have undergone modifications to prevent theft in ways the USPS has never implemented before. Such is the state of mailboxes today.
1. Historic Hydrants
As you stroll through your neighborhood, one thing is almost certain to catch your eye: fire hydrants. These bright, sturdy fixtures are scattered throughout the area, each one connected to an underground water system, standing ready in case of an emergency, like a house fire. One particular feature of fire hydrants truly distinguishes them: their bolts.
A typical fire hydrant is topped with five-sided bolts that can only be turned with a specialized five-sided wrench. These tools aren’t commonly available to the public, but the fire department always has them on hand. When they need to, they can quickly access the hydrant. In places like New York City, firefighters even know how to temporarily remove the bolts to create a makeshift water fountain for children to enjoy during the hot summer months!
This method of securing hydrants wasn’t always the norm, though. In earlier times, before the invention of fire hydrants, private firefighting companies relied on hollowed-out logs to battle blazes. When a fire broke out, firefighters would dig into the ground to uncover the water pipe underneath. They’d drill a hole in the pipe, then use the water that flowed out to help put out the flames.
Once the fire (hopefully) was extinguished, they’d insert a long stick into the hole they’d drilled into the pipe and refill the hole with dirt. The stick would remain visible above the ground, marking the spot for future use. When the next fire broke out, they could easily find the hole, reopen it, and continue fighting the fire. This is where the term 'fire plug' originated from!
