How are diagonal streets in Washington DC?

The diagonal streets in Washington DC, known as avenues, follow a specific naming convention that aligns with the cardinal directions and intersects the numbered streets at strategic points. Let's delve into how these diagonal avenues are oriented and labeled:

Northeast and Southeast Avenues:

- Avenues with names ending in "NE" run diagonally from northwest to southeast and increase numerically as they move away from the center of the city. For example, 1st Street NE intersects Pennsylvania Avenue NE between 2nd and 3rd Streets NW. Similarly, 4th Street NE intersects Massachusetts Avenue NE between 4th and 5th Streets NW.

- Avenues with names ending in "SE" follow a similar pattern but run diagonally from southwest to northeast. They intersect Pennsylvania Avenue SE and increase numerically with distance from the city center.

Northwest and Southwest Avenues:

- "NW" avenues run diagonally from southwest to northeast. They increase numerically as they move farther from the center, intersecting Massachusetts Avenue NW between numbered streets. As previously mentioned, the intersection of Massachusetts Avenue NW and Pennsylvania Avenue NW serves as a pivotal point where streets transition from Northwest to Northeast or Southwest to Southeast. For instance, 2nd Street NW intersects Massachusetts Avenue at a point between 2nd and 3rd Streets NE/SE.

- Analogously, "SW" avenues run diagonally from southeast to northwest, intersecting Constitution Avenue NW on their path away from the heart of the city. Their numerical values also rise corresponding to the number of avenues that have passed since Constitution Avenue NW.

By following this unique street-naming system, avenues in Washington DC create a distinctive urban grid that allows for precise navigation amidst its geometric street structure. The diagonal avenues facilitate direct routes toward major landmarks and offer breathtaking vantage points of the city.