Highways numbered 300 - which states have them, and how prominent are they?

[KCRoadFan]

Believe it or not, this is my 300th post!

As some of you may recall, I created posts about highways with the number 100 and 200 to mark the respective milestones. In a similar vein, here's one about ones with the number 300!

I know that NY 300 runs through Newburgh, and that it was once used to connect I-87 with I-84 until a direct interchange was built between the two freeways. What other states have a highway with that number, and how big of a role does it play in that state's highway network?

[Max Rockatansky]

Not many for California:

-  FHWA I-305 on US 50 in Sacramento
-  CA 330 which was a renumbering of CA 30
-  CA 371 which was another Renumbering; this time CA 71
-  I-380
-  US 395

[oscar]

https://en.wikipedia.org/wiki/List_of_highways_numbered_300 (includes all the 300s I've driven).

Georgia 300 connects to I-75. New York 300 connects to I-84 and I-87. New Mexico 300 is barely signed, at its south end off I-25.

[kenarmy]

MS doesn't really like x00 routes, but they have several other routes in the 300's.

[SkyPesos]

There doesn't seem to be that many notable highways numbered 300 from checking this list. For my state, Ohio, OH 300 is just a short 6 mile 2 lane rural connector between US 6 and US 20 near Toledo.

When you get to 400 posts and make a 400 thread, there's a lot of good examples for that though (looking at you, GA and ON).

[kernals12]

Connecticut's got 384 and 395, the latter of which extends into Massachusetts and for no logical reason becomes 290 and then 190.

[TravelingBethelite]

Connecticut's got 384 and 395, the latter of which extends into Massachusetts and for no logical reason becomes 290 and then 190.

Don't forget 372, 305, and my very own hometown route, 302, among others.

[Ketchup99]

In PA, SR 0300 is on the PA-283 highway from Harrisburg to Lancaster. (It can't be SR 0283, because I-283 has that particular designation.)

[roadman65]

Delaware and Maryland have an MSR called Route 300. Don’t know it’s significance as it’s one of four routes keeping the same number on both sides of the state line.

The others, Route 404 connecting the Chesapeake Bay Bridge to the DE beaches. Route 54 straddling the state line on DE’s southern border. And then DE-MD 896 which is only cause it only enters Cecil County, MD for a brief moment to connect to PA 896.

The other state routes change numbers at the state line, so MD-DE has a reason to share the 300 number for whatever.

[bwana39]

Texas 300 is a fairly negligible highway. It runs from US-271 near the south side of Gilmer to US-80 in Longview It is all four-laned and is a good road, but at less than 20 miles, it is a minor route.

FM-300 in the scheme of things may be more important to Levelland than SH-300 is to either Gilmer or Longview.

[Flint1979]

Michigan only has M-311 and M-343 both of which are in the same part of the state for state highways and I-375 for Interstate.

[Scott5114]

Oklahoma doesn't have a Highway 300. The only routes starting with 3 are 325 (numbered to match NM-456), 351 (the Muskogee Turnpike), 364 (the Creek Turnpike), and US-377.

[JoePCool14]

Illinois has four state routes in the 300s: IL-336, IL-351, IL-390, IL-394. 390 is the Elgin-O'Hare Expressway (Tollway), and 394 is the road that goes south from where I-94 diverts east onto I-80 on the Borman. The other two are relatively short routes located south in the state.

We also have I-355 up in Chicagoland.

[Takumi]

VA 300 is a minor road off of US 60 into Powhatan. Despite its short length, it has a spur, 300Y.

[dvferyance]

Wisconsin only has WI-312 and WI-318. Both are pretty short. Once had the unsigned WI-341 which was even shorter.

[Alex]

Florida's State Road 300 is a short route joining mainland Franklin County with St. George Island along the Gulf of Mexico across the Bryant Grady Patton Bridge.

[KCRoadFan]

Florida's State Road 300 is a short route joining mainland Franklin County with St. George Island along the Gulf of Mexico across the Bryant Grady Patton Bridge.

We've driven that road - when we lived in Tallahassee in the 90's when I was little, St. George Island was where we went to the beach. That was where I came to love being in the water.

[Bruce]

WA 300 is a very minor rural highway that connects its parent (WA 3) with a state park. It's not much to write home about.

[roadman65]

New York has one in Newburgh. It is partially an East- West route and the rest a North-South route.

[JayhawkCO]

CO300 is a short highway that leads to the Leadville Fish Hatchery.  Exciting, eh?

Chris

[sparker]

Let's not forget TN 300, the short spur from the NW corner of I-40 in Memphis over to US 51; while a little over a mile long, its claim to fame is as a part of the I-69 corridor from Memphis to Dyersburg -- in fact, it's the only part that is currently in service.  Given the glacial pace that development of this particular I-69 SIU is moving, it'll retain its current TN 300 number for quite some time to come. 

[sprjus4]

Virginia has I-381, I-395, US-301, US-311, US-340, and US-360.

[Bickendan]

Oregon has a decent number, though 380 is the best signed:
331, 332, 333, 334, 335, 339, 350, 351, 360 (US 26), 361, 370, 372, 380, and of course, US 395.

[jeffandnicole]

NJ has 3, 300 routes:

US 322, going from Atlantic City to the Commodore Barry Bridge in Bridgeport/Logan Twp, and eventually continues to Cleveland, Ohio.

NJ 347, which is a bypass of NJ 47.  If NJ used conventional Interstate highway rules, this would be a violation as it's a loop, not a spur.

NJ 324, which is a 1.5 mile routing of former US 322 in Bridgeport/Logan Twp.  60% of the route (MP 0.0 - 1.0) is nothing more than a closed roadway, heavily encroached upon with weeds. The other 40% (MP 1 - 1.5) isn't really maintained, has a few houses and access to a business, and has no other real purpose.

Most of NJ's 300 'routes' are Bus Number Routes.  Same with the 200s and 400s. 

[Avalanchez71]

TN has a slew of 300s and the majority of them are secondary state routes in East Tennessee.
SR 300 is a connector from I-40 to US 51 to Millington.  It is unsigned with the exception of the milepost which has the 300 on it.

SR 386 is the Hendersonville/Gallatin Connector.
SR 396 is the Spring Hill Connector.

It seems that they use the 300s on the connector routes that are fully controlled access highway routes.