Random facts about interstates and US routes

[Rothman]

Technically, Honolulu stretches across all of Oahu, but the Goog counts it as just the south shore.

What?

Apparently, Honolulu and Honolulu county are a consolidated city-county government. They don't have the same boundaries, though.

Your statements appear contradictory.

There is the official 'Honolulu City & County', all of Oahu island, and the "census county division" which is the unincorporated urbanized area on south shore.

No one considers the likes of Laie as a neighborhood of Honolulu.

I understand the government structure, but saying every town and other city on Oahu is just part of the City of Honolulu just comes off as erroneous.  It just looks like communties have given up local governments for representation on a county board.

Makes me think of hamlets and other named places in NY that are governed by their surrounding town or city, but even then, the communities on Oahu are more distinctive.

[zachary_amaryllis]

A Denver fact to restart this thread: All interstates in Colorado go through Denver proper. I believe this is the only state where all of its interstates go through the limits of one city?

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

North Dakota has all signed interstates at least going through one city (Fargo).

Chris

i would have thought denver had more i-70 mileage myself than that... but upon further reflection, what i'm thinking is denver city limits is i think actually commerce city, isn't it. (just to the east of i-25, heading east)

[usends]

This thread has morphed into "Random misinformation about highways". 

[mukade]

Gary, Indiana is the smallest city with four 2 digit Interstate routes that enter its city limits. I can only count a handful of cities of any size with this many:

Chicago	|	2,746,388	|	I-55, I-57, I-90, I-94
Dallas	|	1,304,379	|	I-20, I-30, I-35E, I-45
Indianapolis	|	887,642	|	I-65, I-69, I-70, I-74
Kansas City	|	508,090	|	I-29, I-35, I-49, I-70
St. Louis	|	301,578	|	I-44, I-55, I-64, I-70
Birmingham	|	200,733	|	I-20, I-22, I-59, I-65
Gary	|	69,093	|	I-65, I-80, I-90, I-94

[CtrlAltDel]

A Denver fact to restart this thread: All interstates in Colorado go through Denver proper.

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

I don't think this is true for I-70.



I know city limits can be iffy on Google Maps, but this seems pretty solid.

The official neighborhood map of the city seems to bear this out as well:

[jlam]

A Denver fact to restart this thread: All interstates in Colorado go through Denver proper.

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

I don't think this is true for I-70.



I know city limits can be iffy on Google Maps, but this seems pretty solid.

The official neighborhood map of the city seems to bear this out as well:

I believe jayhawkco meant I-270.

[CtrlAltDel]

A Denver fact to restart this thread: All interstates in Colorado go through Denver proper.

And also somewhat interestingly, three of the five only are in Denver for less than a mile (I-76, I-225, and I-70).

I don't think this is true for I-70.

I believe jayhawkco meant I-270.

That would definitely make more sense.

[SkyPesos]

All 4 odd divisible by 15 4xx interstate numbers are well known, and can be linked to a specific city or two just by mentioning the interstate:

405 - LA and Seattle
435 - Kansas City
465 - Indianapolis
495 - DC and NYC

Another random thought to add on to this one: The I-70 family intersects 3 of those 4, with the only one that it doesn't meet is I-405.

And between KC and DC, the beltways on the cities I-70 goes through are like 435 - 270 - 465 - 270, and then you have 495 and 270 intersecting in DC (though 270 isn't a beltway the last time). Neat little pattern.

[Hobart]

Both Interstate 74 and Interstate 80 are pushed through at least one cloverleaf loop ramp in the Quad Cities area of Illinois.

Both of these situations can be resolved by cleverly renumbering the highways, swapping I-80 and I-280, and having I-74 follow I-80's original routing instead of going through the downtown area.

This is the only case I know where an undesirable situation can be avoided by swapping a few signs around, without any new construction.

[CNGL-Leudimin]

I know Illinois tried to do that more than once, but Iowa wouldn't go along.

[Hobart]

Another random Illinois fact

Interstate 57 has 7 consecutive interchanges which are cloverleaf variants between 159th Street and Stunkel Road, depending on how far you're willing to push the definition of "cloverleaf variant".

Area on Google Maps:
https://www.google.com/maps/@41.5310222,-87.7457712,12.46z

Picture:

[paulthemapguy]

That fact isn't terribly unique; you could argue that almost every interchange configuration besides a diamond it based on the cloverleaf.  And a lot of old freeway sections are littered with cloverleafs or interchanges related to the cloverleaf.  Just look at I-55 from I-355 northeast to IL-171.

[SkyPesos]

Every x1 US route each x1 meets (or used to meet)

US 1: 21, 41
US 11: 21, 31, 41, 51, 61
US 21: 1, 11
US 31: 11, 41
US 41: 1, 11, 31
US 51: 11, 61
US 61: 51, 71
US 71: 61
US 81: None
US 91: 101
US 101: 91

So it seems like that US 81 is the only x1 US route to not meet another x1 at any point in its history.

[Flint1979]

Every x1 US route each x1 meets (or used to meet)

US 1: 21, 41
US 11: 21, 31, 41, 51, 61
US 21: 1, 11
US 31: 11, 41
US 41: 1, 11, 31, 41
US 51: 11, 61
US 61: 51, 71
US 71: 61
US 81: None
US 91: 101
US 101: 91

So it seems like that US 81 is the only x1 US route to not meet another x1 at any point in its history.

US-11 obviously has the most due to the NE-SW angle it travels.

[GaryV]

US 41 meets itself?  I guess you're thinking of that turnaround in Copper Harbor?

[plain]

US 41 meets itself?  I guess you're thinking of that turnaround in Copper Harbor?

That's what I'm thinking too

[ethanhopkin14]

US 41 meets itself?  I guess you're thinking of that turnaround in Copper Harbor?

You speak of this?

[bandit957]

The U.S. and Interstate shields were based on shapes used in heraldry.

[milbfan]

US 80 used to run all the way out to San Diego, from Tybee Island, GA.  It was gradually truncated on the west end to its current ending at I-30 in Dallas.

There is a marker at its end in Tybee Island that notes its ending and that the other end could be found in San Diego.

[bandit957]

The state route shield used by Michigan and North Carolina is called a "lozenge."

[MikieTimT]

All x0 interstates (including I-30) meet with the I-29 I-49 superinterstate.

I don't consider I-49 part of any superinterstate.  Hell, it hasn't even replaced US-71 completely in ANY of the states it runs through.

[Flint1979]

The state route shield used by Michigan and North Carolina is called a "lozenge."

That's an old French word simply meaning diamond shape.

[ethanhopkin14]

Interstate 45, despite being only 284.9 miles long and intrastate as well, both uncommon for interstate ending in 0 or 5, still intersects three x0 interstates, the same number of x0 interstates the border to border Interstate 5 intersects with, and more than Interstate 85 intersects with two. 

[CtrlAltDel]

Interstate 45, despite being only 284.9 miles long and intrastate as well, both uncommon for interstate ending in 0 or 5, still intersects three x0 interstates, the same number of x0 interstates the border to border Interstate 5 intersects with, and more than Interstate 85 intersects with two.

True, but one of the X0s that I-45 intersects with is I-30, itself kind of iffy for an X0.

[jt4]

The U.S. and Interstate shields were based on shapes used in heraldry.

I believe that's also why they are called "shields."