Your state’s most important highway in each range?

[webny99]

80's I'd go with I-87 over I-81, because NY City - Albany - Northway > Binghamton - Syracuse

Yeah, probably true, although I'd rather be biased towards upstate than downstate. 

Albany is upstate!

Of course, but an argument for I-87 requires factoring in downstate. Without NYC and vicinity, it's pretty much a toss-up.

And yeah, the Northway gets a LOT more traffic than I-81, especially in tourist season; it has one of the longest continuous 6+ lane sections of road in the state (55 miles from I-90 through Lake George) for a reason.

Very true. No disputing I-87 wins based on traffic volume, although I-81 passes through two upstate metros to I-87's one, and serves as the primary route from central and western NY to NYC.

[Flint1979]

80's I'd go with I-87 over I-81, because NY City - Albany - Northway > Binghamton - Syracuse

Yeah, probably true, although I'd rather be biased towards upstate than downstate. 

Albany is upstate!

Of course, but an argument for I-87 requires factoring in downstate. Without NYC and vicinity, it's pretty much a toss-up.

And yeah, the Northway gets a LOT more traffic than I-81, especially in tourist season; it has one of the longest continuous 6+ lane sections of road in the state (55 miles from I-90 through Lake George) for a reason.

Very true. No disputing I-87 wins based on traffic volume, although I-81 passes through two upstate metros to I-87's one, and serves as the primary route from central and western NY to NYC.

I-75 in Michigan is a lot like I-87 is in New York. Both serve the largest city in the state and are used for the same type of travel. However I-75 goes down to four lanes north of Bay City and doesn't resume anything more than than four lanes north of that point. At the M-13 connector it goes from eight lanes down to four. I wouldn't say it needs to be six lanes for the rest of the state but at least to Gaylord and doesn't need anymore than four lanes in the U.P.

[vdeane]

80's I'd go with I-87 over I-81, because NY City - Albany - Northway > Binghamton - Syracuse

Yeah, probably true, although I'd rather be biased towards upstate than downstate. 

Albany is upstate!

Of course, but an argument for I-87 requires factoring in downstate. Without NYC and vicinity, it's pretty much a toss-up.

And yeah, the Northway gets a LOT more traffic than I-81, especially in tourist season; it has one of the longest continuous 6+ lane sections of road in the state (55 miles from I-90 through Lake George) for a reason.

Very true. No disputing I-87 wins based on traffic volume, although I-81 passes through two upstate metros to I-87's one, and serves as the primary route from central and western NY to NYC.

That's the great thing about I-87: it includes both.

[SD Mapman]

SD:
1-10: SD 10 because SD doesn't do single digit routes
11-20: Probably US 14, as it hits Pierre and several other population centers (including Spearfish, which is obviously the most important)
21-30: I-29. No explanation necessary.
31-40: SD 34, the only EW cross-state state highway (SD 37 is a close second with the Mitchell to Huron 4-lane)
41-50: SD 43. Obviously. (but really SD 50 with the Yankton-I 29 4-lane)
51-60: SD 53. This one isn't a joke (there isn't anything else to choose from)
61-70: Coin flip between SD 63 and SD 65... and 63 wins.
71-80: SD 79 because Heartland Expressway
81-90: I-90. Again no explanation necessary.
91-100: these don't exist yet
101-110: SD 109 cause it's the longest
111-120: SD 115 because Sioux Falls
121-130: SD 127... a cross-state 3 digit route!
131-140: These have all died horrible deaths
141-150: SD 144! Akaska! Excitement!
151-160: SD 158 I think is actually signed properly
161-170: SD 168 in the middle of nowhere
171-180: I don't think they exist
181-190: US 183 finally something somewhat important (I-190 is sadly pointless)
191-200: Could not compute
201-210: SD 204, the Oahe Dam is scenic
211-220: US 212... I guess Watertown is interesting?
221-230: I-229 is flat
231-240: SD 240 ooh look tourists
241-250: SD 244. 'Murica.
251-260: SD 253?????????
261-270: SD 262 diagonals are fun
271-280: SD 273 because West River is better than East River
281-290: US 281 there's nothing else here
291-300: the Army requisitioned this one
301-310: Never existed ever
311-320: SD 314 has no competition
321-330: SD 324. Fun fact, I clinched this route on my bicycle.
331-340: nothing
341-350: still nothing
351-360: yup still nothing
361-370: I might see something on the horizon
371-380: SD 377. Don't get stuck in the gumbo
381-390: US 385... ATVs! RVs! Giant rocks!
391-400: SD 391, Pointless link #1
401-410: SD 407, Pointless link #2
411-420: back to nothing
421-430: there is nothing here go back to California
431-440: nothing here either
441-450: SD 445, Pete Lien to Blood Services
451-460: why did I make this section there's nothing here
461-470: see above
471-480: SD 473 because Lawrence County is better than Fall River County

The only other routes are the "River Roads", 1804 and 1806, but neither of those are important at all.

[wriddle082]

South Carolina

1-9:  I'm really struggling between US 1 and SC 9, but I'm thinking 9 has the edge since it's not supplanted by any interstates and it stays close to most of the northern border.
10-19:  US 17
20-29:  I-26
30-39:  I'd say SC 34 since it's fairly long going from Greenwood to Dillon.  But also SC 31 because it's an important freeway bypass of a bypass of Myrtle Beach, which could one day be an interstate.
40-49:  Either SC 41 because it's long or SC 49 because it serves suburban Charlotte.  SC 48 is also important since it runs along Columbia's Assembly Street and passes by the SC State House and USC.
50-59:  US 52
60-69:  I'll go with SC 64.
70-79:  I-77, but SC 72 gets honorable mention due to its improvements b/w GA and Clinton.
80-89:  I-85, duh!
90-99:  I-95, also duh!
100s: either US 123 because it goes through Clemson, or SC 151 since it's all four lanes from Pageland to Darlington and is an important piece of an improved link b/w Charlotte and Florence.
200s:  going with US 278 because it connects I-95 with Hilton Head Island.
300s:  IMO it's literally a three way tie b/w US 301, US 321, and I-385.
400s:  This one is tough.  I really don't think it's US 401 so I'm going with SC 460 since it's a new route and bypasses Fort Mill.
500s:  pretty sure it's US 501, but I-526 is also important.  Hmmm...
600s:  All I can think of is US 601 but I'm thinking there could be a better one?
700s:  I guess US 701, but maybe SC 768 because it's a shortcut from I-77 to US 76/378 towards Sumter.  Or SC 703 going from the foot of the Ravenel Bridge through Mt. Pleasant to Sullivan's Island.
800s:  wow, I can't even think of any SC primary routes in the 800s
900s:  SC 901, which is an underrated alternate route to I-77 from northern Fairfield County to the outskirts of Rock Hill.

I'll try to do Tennessee later.

Agree with most of yours. SC 61 could also be the most important in the 60s, since it connects all the historical plantations and is a major route in Charleston.

Ok I'll buy that!  I've had to go across most of 64 before and found it to be convenient, but 61's in Charleston so it gets more attention.

I thought of a better one for the 100's: US 176.  It more or less follows I-26 though it only gets close to it in the Columbia area, but I would consider it to be a good alternative to it, especially between St. Matthews and Goose Creek, where it skips just about everything, most notably the traffic!

[SSOWorld]

Taking a shot at WI:
0-9: TIE!!!: 2 and 8 cover important links well as the only two single-digit routes in WI (No state routes under 11).  2 bridges the UP with MN and 8 is a link with MSP to the UP.
10-19: 10 without a doubt.  takes central and western WI traffic to Appleton/Oshkosh (with US-45's help).
20-29: 29 is a major 4-lane expressway connecting MSP via Chippewa Falls with Green Bay and Wausau and a major E-W route.
30-39: 35 is quite the tourist line for running the rivers.  I-39 doesn't count - more later.
40-49: 41, both of them are self-explanatory as the city-side connection to 43's "express" to Green Bay
50-59: 51, Choosing 51 because 39 doesn't go beyond Wausau, but the route connects the UP with Illinois and beyond and links the tourist traps Manitowish and Minocqua
60-69: tough one.  67 connects many links to the Kettle Moraine scenic route.
70-79: 73 is a diagonal route that links major roads to back-road towns like Wis Rapids and Marshfield.
80-89: 83 is a nice local route in the southeast part of the state
90-99: 94, nuff said.
100-above: they're all short routes.  100 is a "belt" around Milwaukee. 441 is a SE belt around Appleton, 172 plays a shortcut south of GB.

[Charles2]

Taking a stab at Alabama:

0-9: By default, it has to be AL-5.  All other single digit routes in Alabama are "hidden" designations for U.S. routes.

10-19: I-10, as it passes through the state's second largest metro area, Mobile.  Again, most routes numbered between 10-19 are hidden designations for U.S. routes.  The only significant routes in this range are AL-10, which goes from the Mississippi border to the Georgia border, but doesn't pass through any significant cities or towns.

20-29: I-20, since it passes through two of the state's largest metro areas, Tuscaloosa (200K+) and Birmingham (1.3M+), and serves as the route connecting Dallas and Atlanta.

30-39: U.S. 31.  Replaced in significance by I-65, but in Birmingham it's an important surface route connecting Birmingham with its southern and northern suburbs.

40-49: U.S. 43, almost by default.  It runs the length of the state along and near the Mississippi border, and is the shortest (though not quickest) route between Mobile and Tuscaloosa, then between Tuscaloosa and Florence.

50-59: I-59

60-69: I-65

70-79: U.S. 72

80-89: U.S. 84, by default

90-99: U.S. 98

Most three digit state routes in Alabama are minor connecting routes and have no true significance.

100-109: Nothing to see here

110-119: AL-119 - major connecting route in Birmingham's south suburbs

120-129: No major routes

130-139: AL-133 - connects Muscle Shoals and Florence

140-149: No major routes

150-159: AL-150 - connects the Birmingham suburbs of Bessemer and Hoover

160-167: I-165

170-179: No major routes

180-189: AL-180 & AL-182-routes along the beaches

190-199: AL-195: connecting route between Jasper and Florence/Muscle Shoals

200-209: AL-202: bypass route around Anniston between I-20 and US-431 north

210-219: AL-216: comes in handy on game days when Alabama is playing at Bryant-Denny.  This route parallels I-20/59.

220-229: No routes of importance come to mind

230-239: U.S. 231

240-249

250-259: AL-255: bypass around Huntsville

260-269: AL-261: connecting route between the Birmingham suburb of Helena and U.S. 31 and then I-65

270-279: U.S. 278 (by default)

280-289: U.S. 280

290-299

300-399: Very few choices, but probably U.S. 331

400-499: Very few choices, but I-459 is the obvious one

500-599: I-565

600-699: no routes, unless county roads count

700-799: I-759...it's the only route in the state with a 7xx number.

[Eth]

Taking a stab at Alabama:

[...]

80-89: U.S. 84, by default

I'm admittedly not quite as familiar with Alabama as I am with Georgia, but I feel like US 82 could also be a contender, if only for the Montgomery-to-Tuscaloosa connection. Or maybe I-85, though it admittedly doesn't cross the whole state.

600-699: no routes, unless county roads count

There are a couple. I probably wouldn't call, say, AL 605 major or anything, but it exists.

[ipeters61]

Delaware (oh boy):
1-9: DE 1
10-19: US 13
20-29: DE 20; 24 a close second
30-39: DE 30
40-49: US 40, honorable mention to DE-41 since it serves Wilmington-Lancaster traffic and seems to be a major truck route
50-59: DE 54
60-69: DE 62 is the only choice
70-79: DE 71
80-89: DE 82 is the only choice
90-99: I-95
100+: US 301, with honorable mentions to I-295, US 113, and DE 896

1-9: Concur, obviously
10-19: Concur, obviously
20-29: I'd say 24 is more important than 20, but that's based on what my coworkers have told me about Sussex County.
30-39: Concur
40-49: Concur
50-59: Concur
60-69: No choice but to concur 
70-79: I'd argue for DE-72 since it serves Newark which, I think, is a more significant town than Middletown (which DE-71 serves).  Further, it provides the most direct link between Newark/Bear and DE-1 for Dover/beach-Newark traffic.  DE-71 doesn't really serve as significant of a purpose, in my opinion.  Prior to the opening of DE-1 and the population boom in Middletown, however, I would place DE-71 in first place in this regard, since it would have been the most direct link between Newark and Middletown to Dover and the beaches.
80-89: No choice but to concur
90-99: Concur, obviously
100+: Concur on US-301, I-295, DE-896 (though the significance of DE-896 might dwindle after the construction of the US-301 expressway - I think 896 is important now because it not only provides an alternative Middletown-DE-1 link, but also provides an alternative Dover/beach-Newark link), but I think I-495 deserves an honorable mention as well since it's a heavily traveled bypass of Wilmington and serves the Port of Wilmington.

EDIT: However, there are very few 100+ roads in DE.  202 and 141 are both very important regionally because they connect Wilmington's western suburbs to Philly's western suburbs.  This might not seem like a big deal but they carry very heavy commuter traffic.

[TXtoNJ]

TX:

1-9: Loop 1, MoPac Expressway
10-19: I-10
20-29: I-20
30-39: I-35
40-49: I-45
50-59: US 59
60-69: Will be I-69 once done, but until then, US 67
70-79: US 75
80-89: US 87
90-99: US 90

100s: SH 121
200s: US 290
300s: SH 360
400s: I-410
500s: FM 529
600s: I-610
700s: FM 734
800s: I-820
900s: Not many of importantce
1000+: Loop 1604

[hotdogPi]

600s: RM 620

I-635

[TXtoNJ]

600s: RM 620

I-635

Updated.

[Super Mateo]

I know reply #3 already covers IL, but I'm going to do my own list, plus a market specific list.

Illinois:

0-9:  IL 9.  Goes border to border, but doesn't shadow an Interstate like US 6.
10-19:  IL 17.  A "weak" category as it wins by default.
20-29:  US 20, which is the only route that runs from Chicago to the NW corner of IL.
30-39:  US 30, because of its history, but honorable mention to US 34.
40-49:  IL 47, a growing corridor that's getting expanded.
50-59:  I-55, narrowly beating out I-57 as it hits more major areas, even though I-57 is longer in the state.
60-69:  US 67, the road that perfectly shows what western IL has to offer.
70-79:  I-70, because I can't think of others...
80-89:  I-80, the road I practically got my driver's license on.
90-99:  I-90, Chicago's major link to Rockford.

Chicagoland:

0-9:  US 6, running through quite a few suburbs south of the city.
10-19:  US 12, a busy corridor that needs an expansion at the north end.
20-29:  US 20, which covers a wide range of Chicago suburbs.
30-39:  US 30, I guess.  The only other routes are IL 31 and 38.
40-49:  US 41, going right through downtown Chicago.
50-59:  I-55, but I-57 and IL 53 are quality honorable mentions.
60-69:  I-65, an absolutely vital link between Chicagoland and Indianapolis.
70-79:  IL 72 is the only route I can think of...
80-89:  IL 83, connects the north and south suburbs.  I-80 is more important to through traffic.
90-99:  I-94, including the Edens, a large portion of the Kennedy, the Dan Ryan, the Calumet, the Kingery, and the Borman Expressways, and carries more traffic than any road I've traveled.

[ilpt4u]

I know reply #3 already covers IL, but I'm going to do my own list, plus a market specific list.

Illinois:

0-9:  IL 9.  Goes border to border, but doesn't shadow an Interstate like US 6.
10-19:  IL 17.  A "weak" category as it wins by default.
20-29:  US 20, which is the only route that runs from Chicago to the NW corner of IL.
30-39:  US 30, because of its history, but honorable mention to US 34.
40-49:  IL 47, a growing corridor that's getting expanded.
50-59:  I-55, narrowly beating out I-57 as it hits more major areas, even though I-57 is longer in the state.
60-69:  US 67, the road that perfectly shows what western IL has to offer.
70-79:  I-70, because I can't think of others...
80-89:  I-80, the road I practically got my driver's license on.
90-99:  I-90, Chicago's major link to Rockford.

Chicagoland:

0-9:  US 6, running through quite a few suburbs south of the city.
10-19:  US 12, a busy corridor that needs an expansion at the north end.
20-29:  US 20, which covers a wide range of Chicago suburbs.
30-39:  US 30, I guess.  The only other routes are IL 31 and 38.
40-49:  US 41, going right through downtown Chicago.
50-59:  I-55, but I-57 and IL 53 are quality honorable mentions.
60-69:  I-65, an absolutely vital link between Chicagoland and Indianapolis.
70-79:  IL 72 is the only route I can think of...
80-89:  IL 83, connects the north and south suburbs.  I-80 is more important to through traffic.
90-99:  I-94, including the Edens, a large portion of the Kennedy, the Dan Ryan, the Calumet, the Kingery, and the Borman Expressways, and carries more traffic than any road I've traveled.

I'm going to do the Out-State/non-Chicagoland IL list
0-9: IL 1
10-19: IL 13. IL 17 is an interesting competitor, but 13 is more important to Southern IL vs 17 for Northern Central IL. IL 15 is also a contender, but it tends to parallel I-64, mostly.
20-29: US 24 - Giving Western IL some love, linking Peoria to Quincy. Also East out if Peoria, is used as a route to get to I-55 and Chicago. US 20 almost - while existing in Chicagoland, it is a major route across the whole of Northern IL
30-39: US 36
40-49: IL 47. Possibly outer fringe of Chicagoland, but far enough out here. US 45 is my other thought. IL 40 is a major route in Peoria and also considered
50-59: I-55. I really want to answer US 51, but it is hard to make the claim it is more important than I-55 or I-57 with a straight face. If the US 51/I-39 freeway were extended from Bloomington-Normal to Salem, then maybe, but still probably not.
60-69: I-64. Giving Southern IL the love on this one, over US 67 for Western IL
70-79: I-70. I-74 is probably more important for Intrastate travel, as well as major IL Employers like State Farm, Caterpillar, and John Deere, as well as Universities including Univ of IL, IL St Univ, and Western IL Univ
80-89: I-80. Does exist in Chicagoland, but is a vital trans-IL link, in addition to transcontinental
90-99: IL 92. Hard choice here, staying away from I-90 and I-94. Picked IL 92, since it serves Downtown Moline-Rock Island, and also John Deere. IL 94 or 96 were considered, serving Western IL Mississippi River Communities

[myosh_tino]

CA, Pt. 2

150-159: 154 would be my pick. Originally part of a longer 150, 154 is the San Marcos Pass Road and is often used as an alternate to 101. It skips the Gaviota coast entirely and gives alternate access to Solvang (a popular tourist town) and direct access to Los Olivos (one of the important Santa Barbara Wine Country towns). It would be more useful if it could bypass Santa Barbara entirely (doing this requires taking 192 in addition).

I would offer up CA-152 which runs from Watsonville to CA-99 north of Madera via Gilroy and Los Banos.  It is also a vital corridor that connects Silicon Valley/Santa Clara County to I-5 which Caltrans has gradually been upgrading to expressway standards between 101 and I-5.  CA-152 is also one of 3 routes that connect southern Santa Clara County to the coast (129 and 156 are the others).

[Max Rockatansky]

CA, Pt. 2

150-159: 154 would be my pick. Originally part of a longer 150, 154 is the San Marcos Pass Road and is often used as an alternate to 101. It skips the Gaviota coast entirely and gives alternate access to Solvang (a popular tourist town) and direct access to Los Olivos (one of the important Santa Barbara Wine Country towns). It would be more useful if it could bypass Santa Barbara entirely (doing this requires taking 192 in addition).

I would offer up CA-152 which runs from Watsonville to CA-99 north of Madera via Gilroy and Los Banos.  It is also a vital corridor that connects Silicon Valley/Santa Clara County to I-5 which Caltrans has gradually been upgrading to expressway standards between 101 and I-5.  CA-152 is also one of 3 routes that connect southern Santa Clara County to the coast (129 and 156 are the others).

I had 152 on mine, Pacheco Pass is the most used pass in the Diablos until 46 to the south and I-580 to the north. 

[froggie]

I wouldn't exactly say 42 has "import," although it is a scenic drive (I've clinched all three segments).

Farther away from you, it does.  The northern segment can and is a useful (and less stressful) alternative to the I-81/US 11 corridor.

[bzakharin]

30-39: I would select 31. It serves a major role in a corridor with no other roads. 33 is close, but parts of it are less important. You could also argue 35...

NJ 38 seems to be the canonical way to get from Philly to the NJ Turnpike

40-49: Concur, though 40 and 47 are close.

There is no route paralleling US 40 up until it joins in with 322 and gets close to the AC Expressway. US 46 is paralleled closely by I-80 the entire way

700-799: There is only NJ 700.

There are 700 series county routes as well and those are signed (unlike NJ 700)
CR 706 in Camden and Gloucester counties wins on sheer length (13.1 miles) since most of the 700 series roads are only 1-2 miles.

Middlesex County also has CR 807 which would be the only contender for 800-899

[ipeters61]

30-39: I would select 31. It serves a major role in a corridor with no other roads. 33 is close, but parts of it are less important. You could also argue 35...

NJ 38 seems to be the canonical way to get from Philly to the NJ Turnpike

At least until the I-95/PA Turnpike interchange is complete.  But I agree on NJ-31 being a major route.

EDIT Plus, there are other ways to get to the NJ Turnpike from Philly, bearing in mind that people are slaves to the GPS nowadays.  Typing into Google now, it suggests taking NJ-90 to NJ-73 (96 miles, 116 minutes for Philly to NYC), even though NJ-38 is a slightly shorter route when heading north to the NJ Turnpike (94 miles, 116 minutes for Philly to NYC)...plus 38 is more direct, avoiding 95 in PA entirely.  I know when taking Greyhound from Philly to NYC, they've always taken NJ-38 to the NJ Turnpike, if I remember correctly.

[jeffandnicole]

30-39: I would select 31. It serves a major role in a corridor with no other roads. 33 is close, but parts of it are less important. You could also argue 35...

NJ 38 seems to be the canonical way to get from Philly to the NJ Turnpike

At least until the I-95/PA Turnpike interchange is complete.  But I agree on NJ-31 being a major route.

EDIT Plus, there are other ways to get to the NJ Turnpike from Philly, bearing in mind that people are slaves to the GPS nowadays.  Typing into Google now, it suggests taking NJ-90 to NJ-73 (96 miles, 116 minutes for Philly to NYC), even though NJ-38 is a slightly shorter route when heading north to the NJ Turnpike (94 miles, 116 minutes for Philly to NYC)...plus 38 is more direct, avoiding 95 in PA entirely.  I know when taking Greyhound from Philly to NYC, they've always taken NJ-38 to the NJ Turnpike, if I remember correctly.

Rt. 38 doesn't connect directly with the NJ Turnpike, so that route alone doesn't work.  Most likely, if leaving Philly on the Ben Franklin Bridge, they may have taken Rt. 30 to Rt. 38 to Rt. 73, which connects with Exit 4 of the NJ Turnpike.  The bus could also stay on Rt. 38 until I-295, then take that north to Exit 47A (Rt. 541 to NJ Turnpike Exit 5), Exit 56 (NJT Exit 7) or Exit 60 (195 to NJ Turnpike Exit 7A).  The choice probably largely is based on starting/ending points in the city, congestion, other stops, etc. 

Of course, it greatly depends where you are in Philly.  In most cases, it makes sense to stay off of I-95, unless the driver needs to connect to 76 or 676.  Bus drivers using the Walt Whitman Bridge may I-76 East to I-295 North to Exit 28 (Rt. 168 to NJ Turnpike's Exit 3, or stay on I-295 North to Exit 36A (Rt. 73 to NJ Turnpike Exit 4), or any of the exits listed above.

As for Rt. 31 being more important than 33, I'll give some credit to that one. It was on my radar, but knowing how much traffic 33 gets I gave it to them (traffic counts seem to be similar or slightly favor 31 though).

[bzakharin]

Rt. 38 doesn't connect directly with the NJ Turnpike, so that route alone doesn't work.  Most likely, if leaving Philly on the Ben Franklin Bridge, they may have taken Rt. 30 to Rt. 38 to Rt. 73, which connects with Exit 4 of the NJ Turnpike. 

Oh, I know. I was just simplifying. NJ 38 is the bulk of that distance, and in the 30-39 range. US 30 is too, but it comprises a much shorter portion of the route.

The bus could also stay on Rt. 38 until I-295, then take that north to Exit 47A (Rt. 541 to NJ Turnpike Exit 5), Exit 56 (NJT Exit 7) or Exit 60 (195 to NJ Turnpike Exit 7A).  The choice probably largely is based on starting/ending points in the city, congestion, other stops, etc. 

Greyhound has a major bus stop right at Exit 4 which influences the route. Bolt bus from Philly to NYC stops right on NJ 38 near the Cherry Hill Mall, though I think the existence of that stop is a happy coincidence of being a fairly useful point on the already fastest route.

Of course, it greatly depends where you are in Philly.  In most cases, it makes sense to stay off of I-95, unless the driver needs to connect to 76 or 676.  Bus drivers using the Walt Whitman Bridge may I-76 East to I-295 North to Exit 28 (Rt. 168 to NJ Turnpike's Exit 3, or stay on I-295 North to Exit 36A (Rt. 73 to NJ Turnpike Exit 4), or any of the exits listed above.

Or they can use NJ 90 to NJ 73 if they are coming from Northeast Philly. I am not aware of any major carriers doing so, however.

[Henry]

Since IL and CA were already covered, I'll do WA.

0-9: I-5 or US 2
10-19: US 12 or SR 16
20-29: SR 20
30-39: SR 31
40-49: SR 41
50-59: N/A
60-69: N/A
70-79: N/A
80-89: I-82
90-99: I-90 or SR 99

100s: US 101 or SR 167
200s: SR 290
300s: SR 397
400s: I-405 or SR 410
500s: SR 520
600s: N/A
700s: I-705
800s: N/A
900s: SR 904

[djlynch]

TX:

1-9: Loop 1, MoPac Expressway

You know you're from Austin when it doesn't even come to mind when you're trying to think of numbered highways . I was going to go for SH 6 as the only state highway to go from one edge of the state to the other via the long way.

[plain]

For the 20's in New Jersey, NJ 29 should get an honorable mention.

[dvferyance]

Here is my take on Wisconsin
1-9 US 8 covers more ground than US 2 no single digit state highways
10-19 US 10 although WI 11 US 12 and WI 13 are quite major as well
20-29 WI-29 hands down
30-39 WI-35 it's the longest state highway WI-32 and WI-33 also cross the state
40-49 I-41 or US-41 For state highways WI-42 becasue it serves Door County
50-59 On this one I will pick WI 54 becasue US 51 is a minor route south of Portage
60-69 Tie between WI-60 and WI-64 both cross the state
70-79 WI-70
80-89 Tie between WI-80 and WI-81
90-99 I-94 For state highways WI-95
100-109 WI-100 Milwaukee County beltline
110-119 WI-110 although none of them are major
120-129 WI-120 continuation of IL-47
130-139 WI-131
140-149 US-141
150-159 US-151 hands down
160-169 WI-164 major N-S route in the west Milwaukee suburbs
170-179 WI-172 Not very long but major route in the Green Bay area
180-189 WI-181 Not much to pick from here but this one is a major route in the Milwaukee area
190-199 WI-190 Also known as Capitol Dr.
Not many routes above 200 most major of them WI-441