Freeways without route numbers?

[Hwy 61 Revisited]

So what kind of freeways do you see that don't have any route designations? Some of these are mostly a mile long, but others can be even longer. Here's a few in PA (the only ones I know of so far):

-Central Scranton Expressway
-Airport Connector
-Vine Street Expressway (after 676/30 exit it).

[Rothman]

Adirondack Northway south of the Thruway.

[webny99]

Would NY's parkways count?
They do have shields, but no signed numbers. Some (all?) are also banned to commercial vehicles.

[Max Rockatansky]

Pena Boulevard in Denver connecting to DIA. 

[sprjus4]

Aviation Pkwy - Mooresville, NC
Wade Ave - Raleigh, NC
Old US-421 - Greensboro, NC
Bryan Blvd - Greensboro, NC
All American Fwy - Fayetteville, NC

[Roadgeekteen]

Lowell Connector
A part of the Berkshire Connector
Something near Nashua I think

[KeithE4Phx]

Arizona
The short spur freeway from Loop 202 into Sky Harbor Airport.  It is signed as "To AZ 143," but is shown on the books as "SR 202S."

The completed section of Northern Parkway (actually, it will be a full freeway when finished) doesn't yet have a number assigned, as it is still a Maricopa County road.  From what I understand, it won't be numbered until the entire route is completed to the Loop 101, and the highway is then turned over to ADOT.

Illinois
The furthest-north section of the IL 53 freeway, from Dundee Rd to Lake Cook Rd, has no number.  IL 53 exits at Dundee Rd. and has as long as I can remember (mid 1970s).  Google Maps shows that leg to be IL 53, but other sources say it's still unsigned.

[Max Rockatansky]

One locally in Fresno is Golden State Boulevard north of Cherry Avenue which was Old US 99 before it moved to the Golden State Freeway completely.  There is still a freeway stub that merges into modern CA 99. 

For now the West Side Parkway in Bakersfield but it will eventually be CA 58.

[Hwy 61 Revisited]

Whitehead Highway in Hartford.

[DJ Particle]

Lowell Connector
A part of the Berkshire Connector
Something near Nashua I think

Wasn't the Lowell Connector once BSI-495?

[Great Lakes Roads]

Sam Jones Expressway/Airport Expressway (Indianapolis)- was never signed as a state highway
Keystone Parkway (Carmel)- formerly a state highway with stoplights, city of Carmel took over the roadway and made it a freeway with roundabout interchanges

[bugo]

The LL Tisdale Parkway and the Gilcrease Expressway west of US 75 in Tulsa.

[CNGL-Leudimin]

Physically, a very short section where I-76 and I-80 bump in Ohio, which is entirely unnamed. Also a short section of the Ohio Turnpike in that same place if it doesn't have a secret number. Even though per the log I-76 and I-80 change roadways where they cross, I consider a wrong-way concurrency to exist through the toll booths.

Peña Boulevard in Denver connecting to DIA. 

Fixed (in part thanks to having a Spanish keyboard). It's not "Pity" Boulevard AFAIC.

[RoadWarrior56]

I live within a few miles of 2 unnumbered freeway sections and use both of them often.  Gwinnett County, GA has both the Ronald Reagan Parkway and the Sugarloaf Parkway Extension.

[fwydriver405]

Something near Nashua I think

I think you mean the Circumferential Highway in Nashua, which was meant to be a bypass route around the city of Nashua but most of it was never built.

In Nashua, after US 3 leaves at exit 7, the Everett Turnpike is an unnumbered freeway for ~20.36 km (12.65 mi) running through Merrimack and Bedford until the I-293/NH 101 interchange in Manchester.

In Rhode Island, the T. F. Green Airport Connector Road in Warwick is an unnumbered highway for 1.8 km (1.1 mi).

In Connecticut, after exit 35 (formerly 90) on I-395, the Connecticut Turnpike leaves I-395 and becomes its own unnumbered freeway for 7.23 km (4.49 mi) before terminating at US 6 towards Providence RI.

I'm not sure if the Falmouth Spur in Falmouth ME even counts. While today's signage and mile markers say just "Falmouth Spur" on it, it technically is unsigned I-495...

[hotdogPi]

Not sure if this list is complete or not.

https://en.wikipedia.org/wiki/User:NE2/unnumbered_freeways

[NWI_Irish96]

Sam Jones Expressway/Airport Expressway (Indianapolis)- was never signed as a state highway
Keystone Parkway (Carmel)- formerly a state highway with stoplights, city of Carmel took over the roadway and made it a freeway with roundabout interchanges

A segment of Shadeland Ave on the SE side of Indy is freeway.  It used to be part of IN 100 but that was quite a while ago.

[Flint1979]

I'm pretty sure Michigan's freeways all have a route number. Originally the Davison Freeway was numberless but has been M-8 for about 25 years.

[GaryV]

... has been M-8 for about 25 years.

M-8 was designated about 1993, but not posted until 1997 when the rebuild was complete.

[Roadgeekteen]

Something near Nashua I think

I think you mean the Circumferential Highway in Nashua, which was meant to be a bypass route around the city of Nashua but most of it was never built.

In Nashua, after US 3 leaves at exit 7, the Everett Turnpike is an unnumbered freeway for ~20.36 km (12.65 mi) running through Merrimack and Bedford until the I-293/NH 101 interchange in Manchester.

In Rhode Island, the T. F. Green Airport Connector Road in Warwick is an unnumbered highway for 1.8 km (1.1 mi).

In Connecticut, after exit 35 (formerly 90) on I-395, the Connecticut Turnpike leaves I-395 and becomes its own unnumbered freeway for 7.23 km (4.49 mi) before terminating at US 6 towards Providence RI.

I'm not sure if the Falmouth Spur in Falmouth ME even counts. While today's signage and mile markers say just "Falmouth Spur" on it, it technically is unsigned I-495...

The CT turnpike is unsigned CT 695.

[Ketchup99]

Not sure if anyone's said the Jersey Turnpike south of I-95, Garden State Parkway, and Atlantic City Expressway (the Parkway is technically unsigned NJ-444 but I don't think that matters). There's also Florida's Turnpike, even though, again, it's an unsigned state route FL-91.

[Roadgeekteen]

Not sure if anyone's said the Jersey Turnpike south of I-95, Garden State Parkway, and Atlantic City Expressway (the Parkway is technically unsigned NJ-444 but I don't think that matters). There's also Florida's Turnpike, even though, again, it's an unsigned state route FL-91.

I took the OP to mean designations like the NJ Turnpike as "numbers", as I think those roads are signed.

[jp the roadgeek]

Whitehead Highway in Hartford.

It's actually unsigned SR 598

The TF Green Airport Connector

[mrcmc888]

James White Parkway in Knoxville south of when TN-158 leaves the route and Sam Cooper Boulevard in Memphis are Tennessee's only unsigned freeways.

[hbelkins]

Kentucky's parkways have internal route numbers, but they aren't signed.