Lowest-numbered route you haven't been on

[Jim]

And I just crossed US 11 a couple hours ago (though in Gouverneur, NY)...  I'll be just 4 hours or so from Tuscaloosa if the trip in late July works out to include Pensacola as intended.

[flan]

I recently travelled on a bit of US 85 near its northern end, so my new lowest untravelled number is 98. I have been on the road that at one time was MN 98, but only about 28 years after it stopped being a state highway.

[Rothman]

A middlin' bump.

formulanone	871
Rothman	801
oscar	661
Konza	568
Hot Rod Hootenanny	464
74/171FAN	455
jayhawkco	437
Duke87	432
Mapmikey	429
HTM Duke	386
cl94	382
drebbin37	381
corco	367
dlsterner	344
hbelkins	334
cockroachking	266
froggie	248
deathtopumpkins	248
Jim	216
paulthemapguy	207
US 89	192
NWI_Irish96	182
kurumi	179
plain	174
csw	174
rel4	170
hockeyjohn	154
dfilpus	149
A.J. Bertin	148
Thing 342	127
Scott5114	121
Buck87	112
SGwithADD	112
TheCatalyst31	112
Bitmapped	111
algorerhythms	111
bassoon1986	109
Bickendan	109
adwerkema	108
SEWIGuy	108
amroad17	107
Great Lakes Roads	107
tq-07fan	107
SD Mapman	107
Caps81943	103
clong	103
J N Winkler	103
sparker	102
TheHighwayMan394	102
DandyDan	102
sbeaver44	102
skluth	102
Flint1979	97
hobsini	97
jlam	97
1995hoo	96
MATraveler128	96
SkyPesos	89
7/8	88
I-55	86
flan	85
chesapeake256	84
webny99	68
CoreySamson	68
Eth	63
dantheman	61
bwana39	56
BrianP	53
mgk920	48
fredddie	48
boilerup25	48
milbfan	47
noelbotevera	47
TBKS1	47
ketchup99	47
stevashe	47
Big John	46
ozarkman417	46
Dough4872	43
texaskdog	42
Hunty2022	39
averageroadgeek	37
hen3ry	36
hotdogPi	36
ipeters61	35
Evan_Th	33
FrCorySticha	33
ran4sh	32
Bruce	32
ElishaGOtis	32
Thunderbyrd316	31
thspfc	31
doorknob60	29
Ben114	29
CNGL-Leudimin	29
freebrickproductions	28
ftballfan	26
kphoger	26
mapman1071	24
therocket	24
cenlaroads	23
KEK Inc.	21
epzik8	21
elsmere241	21
jp the roadgeek	19
sharkyfour	19
fwydriver405	19
Takumi	18
dvferyance	17
bm7	15
Roadgeekteen	14
RyanB06	14
cwf1701	13
SoDakInterstateEnthusiast	13
kirbykart	13
Streetman	13
apeman33	12
JMoses24	12
ClassicHasClass	11
KEVIN_224	11
wxfree	9
computerfan0	9
jeffandnicole	8
PHLBOS	8
TheGrassGuy	8
WillWeaverRVA	8
Tarkus	7
TheStranger	7
Quillz	7
Pink Jazz	6
DeaconG	6
Poiponen13	6
Skye	5
Roadsguy	5
Super Mateo	4
JoePCool14	4
SoCal Kid	3
LilianaUwU	3
Occidental Tourist	3
Truvelo	2
bzaharin	2
Zeffy	2
Finrod	2
Kulerage	2
Aaron Camp	2
skquinn	2
MCRoads	2
snowc	2
RoadRebel	2
CoolAngrybirdsrio4	2
Hurricane Rex	1
idk	1

[deathtopumpkins]

My number had long been 248, but I just realized my usual route to shunpike the toll bridges crossing into PA along I-78 technically involves a very short bit of PA 248. This moves me up to......

249. Woo.

Looks like I need to take a quick side jaunt on my next trip through NW Indiana...

[74/171FAN]

My number had long been 248, but I just realized my usual route to shunpike the toll bridges crossing into PA along I-78 technically involves a very short bit of PA 248. This moves me up to......

249. Woo.

Looks like I need to take a quick side jaunt on my next trip through NW Indiana...

Or on your next trip to Hampton Roads.   

[Konza]

My number had long been 248, but I just realized my usual route to shunpike the toll bridges crossing into PA along I-78 technically involves a very short bit of PA 248. This moves me up to......

249. Woo.

Looks like I need to take a quick side jaunt on my next trip through NW Indiana...

Joplin is also nice this time of year...

[Rothman]

Whatever.

formulanone	871
Rothman	801
oscar	661
Konza	568
Hot Rod Hootenanny	464
74/171FAN	455
jayhawkco	437
Duke87	432
Mapmikey	429
HTM Duke	386
cl94	382
drebbin37	381
corco	367
dlsterner	344
hbelkins	334
cockroachking	266
deathtopumpkins	249
froggie	248
Jim	216
paulthemapguy	207
US 89	192
NWI_Irish96	182
kurumi	179
plain	174
csw	174
rel4	170
hockeyjohn	154
dfilpus	149
A.J. Bertin	148
Thing 342	127
Scott5114	121
Buck87	112
SGwithADD	112
TheCatalyst31	112
Bitmapped	111
algorerhythms	111
bassoon1986	109
Bickendan	109
adwerkema	108
SEWIGuy	108
amroad17	107
Great Lakes Roads	107
tq-07fan	107
SD Mapman	107
Caps81943	103
clong	103
J N Winkler	103
sparker	102
TheHighwayMan394	102
DandyDan	102
sbeaver44	102
skluth	102
Flint1979	97
hobsini	97
jlam	97
1995hoo	96
MATraveler128	96
SkyPesos	89
7/8	88
I-55	86
flan	85
chesapeake256	84
webny99	68
CoreySamson	68
Eth	63
dantheman	61
bwana39	56
BrianP	53
mgk920	48
fredddie	48
boilerup25	48
milbfan	47
noelbotevera	47
TBKS1	47
ketchup99	47
stevashe	47
Big John	46
ozarkman417	46
Dough4872	43
texaskdog	42
Hunty2022	39
averageroadgeek	37
hen3ry	36
hotdogPi	36
ipeters61	35
Evan_Th	33
FrCorySticha	33
ran4sh	32
Bruce	32
ElishaGOtis	32
Thunderbyrd316	31
thspfc	31
doorknob60	29
Ben114	29
CNGL-Leudimin	29
freebrickproductions	28
ftballfan	26
kphoger	26
mapman1071	24
therocket	24
cenlaroads	23
KEK Inc.	21
epzik8	21
elsmere241	21
jp the roadgeek	19
sharkyfour	19
fwydriver405	19
Takumi	18
dvferyance	17
bm7	15
Roadgeekteen	14
RyanB06	14
cwf1701	13
SoDakInterstateEnthusiast	13
kirbykart	13
Streetman	13
apeman33	12
JMoses24	12
ClassicHasClass	11
KEVIN_224	11
wxfree	9
computerfan0	9
jeffandnicole	8
PHLBOS	8
TheGrassGuy	8
WillWeaverRVA	8
Tarkus	7
TheStranger	7
Quillz	7
Pink Jazz	6
DeaconG	6
Poiponen13	6
Skye	5
Roadsguy	5
Super Mateo	4
JoePCool14	4
SoCal Kid	3
LilianaUwU	3
Occidental Tourist	3
Truvelo	2
bzaharin	2
Zeffy	2
Finrod	2
Kulerage	2
Aaron Camp	2
skquinn	2
MCRoads	2
snowc	2
RoadRebel	2
CoolAngrybirdsrio4	2
Hurricane Rex	1
idk	1

[74/171FAN]

I created a Route by Number album trying to include some sort of signage for every route before 455 so far.  (https://flic.kr/s/aHBqjBv7f5)

[Konza]

Been doing some more wandering, and although I do not believe it changes the running order, please feel free to add the following to my tally:

568:  New Mexico
569:  Oregon
570:  New Mexico
571:  Missouri
572:  Florida
573, 574:  New Mexico
575:  Interstate (GA)
576:  New Mexico
577:  Louisiana
578:  Nevada
579:  Interstate (PA)
580:  Interstate (NV)
581:  New Mexico
582:  Nevada
583, 584, 585:  New Mexico
586:  Louisiana
587:  Arizona
588, 589, 590, 591, 592, 593, 594:  Louisiana
595:  Interstate (FL)
596:  Nevada
597:  New Mexico
598:  Kentucky
599:  New Mexico
600:  Kentucky
601, 602:  New Mexico
603:  Mississippi
604:  Nevada
605:  Interstate (CA)
606:  New Mexico
607:  Mississippi
608, 609:  New Mexico
610:  Interstate (TX)
611:  Pennsylvania
612:  New Mexico
613:  Nevada
614, 615:  Florida
616, 617:  Louisiana
618, 619:  Kentucky
620, 621:  Louisiana
622:  Kentucky

So the number is now 623.  Will keep at this as opportunities arise.

[Rothman]

Whatever.

formulanone	871
Rothman	801
oscar	661
Konza	623
Hot Rod Hootenanny	464
74/171FAN	455
jayhawkco	437
Duke87	432
Mapmikey	429
HTM Duke	386
cl94	382
drebbin37	381
corco	367
dlsterner	344
hbelkins	334
cockroachking	266
deathtopumpkins	249
froggie	248
Jim	216
paulthemapguy	207
US 89	192
NWI_Irish96	182
kurumi	179
plain	174
csw	174
rel4	170
hockeyjohn	154
dfilpus	149
A.J. Bertin	148
Thing 342	127
Scott5114	121
Buck87	112
SGwithADD	112
TheCatalyst31	112
Bitmapped	111
algorerhythms	111
bassoon1986	109
Bickendan	109
adwerkema	108
SEWIGuy	108
amroad17	107
Great Lakes Roads	107
tq-07fan	107
SD Mapman	107
Caps81943	103
clong	103
J N Winkler	103
sparker	102
TheHighwayMan394	102
DandyDan	102
sbeaver44	102
skluth	102
Flint1979	97
hobsini	97
jlam	97
1995hoo	96
MATraveler128	96
SkyPesos	89
7/8	88
I-55	86
flan	85
chesapeake256	84
webny99	68
CoreySamson	68
Eth	63
dantheman	61
bwana39	56
BrianP	53
mgk920	48
fredddie	48
boilerup25	48
milbfan	47
noelbotevera	47
TBKS1	47
ketchup99	47
stevashe	47
Big John	46
ozarkman417	46
Dough4872	43
texaskdog	42
Hunty2022	39
averageroadgeek	37
hen3ry	36
hotdogPi	36
ipeters61	35
Evan_Th	33
FrCorySticha	33
ran4sh	32
Bruce	32
ElishaGOtis	32
Thunderbyrd316	31
thspfc	31
doorknob60	29
Ben114	29
CNGL-Leudimin	29
freebrickproductions	28
ftballfan	26
kphoger	26
mapman1071	24
therocket	24
cenlaroads	23
KEK Inc.	21
epzik8	21
elsmere241	21
jp the roadgeek	19
sharkyfour	19
fwydriver405	19
Takumi	18
dvferyance	17
bm7	15
Roadgeekteen	14
RyanB06	14
cwf1701	13
SoDakInterstateEnthusiast	13
kirbykart	13
Streetman	13
apeman33	12
JMoses24	12
ClassicHasClass	11
KEVIN_224	11
wxfree	9
computerfan0	9
jeffandnicole	8
PHLBOS	8
TheGrassGuy	8
WillWeaverRVA	8
Tarkus	7
TheStranger	7
Quillz	7
Pink Jazz	6
DeaconG	6
Poiponen13	6
Skye	5
Roadsguy	5
Super Mateo	4
JoePCool14	4
SoCal Kid	3
LilianaUwU	3
Occidental Tourist	3
Truvelo	2
bzaharin	2
Zeffy	2
Finrod	2
Kulerage	2
Aaron Camp	2
skquinn	2
MCRoads	2
snowc	2
RoadRebel	2
CoolAngrybirdsrio4	2
Hurricane Rex	1
idk	1

[CoreySamson]

Thanks to a small little road trip, I traveled on FM 68, now pushing my number to 73. I also acquired 78 on the trip, which was another number I needed, so now it looks like my next numbers after 73 are 81 and 106.

Next stop, Port Arthur!

[Rothman]

This is my United States of Whatever.

formulanone	871
Rothman	801
oscar	661
Konza	623
Hot Rod Hootenanny	464
74/171FAN	455
jayhawkco	437
Duke87	432
Mapmikey	429
HTM Duke	386
cl94	382
drebbin37	381
corco	367
dlsterner	344
hbelkins	334
cockroachking	266
deathtopumpkins	249
froggie	248
Jim	216
paulthemapguy	207
US 89	192
NWI_Irish96	182
kurumi	179
plain	174
csw	174
rel4	170
hockeyjohn	154
dfilpus	149
A.J. Bertin	148
Thing 342	127
Scott5114	121
Buck87	112
SGwithADD	112
TheCatalyst31	112
Bitmapped	111
algorerhythms	111
bassoon1986	109
Bickendan	109
adwerkema	108
SEWIGuy	108
amroad17	107
Great Lakes Roads	107
tq-07fan	107
SD Mapman	107
Caps81943	103
clong	103
J N Winkler	103
sparker	102
TheHighwayMan394	102
DandyDan	102
sbeaver44	102
skluth	102
Flint1979	97
hobsini	97
jlam	97
1995hoo	96
MATraveler128	96
SkyPesos	89
7/8	88
I-55	86
flan	85
chesapeake256	84
CoreySamson	73
webny99	68
Eth	63
dantheman	61
bwana39	56
BrianP	53
mgk920	48
fredddie	48
boilerup25	48
milbfan	47
noelbotevera	47
TBKS1	47
ketchup99	47
stevashe	47
Big John	46
ozarkman417	46
Dough4872	43
texaskdog	42
Hunty2022	39
averageroadgeek	37
hen3ry	36
hotdogPi	36
ipeters61	35
Evan_Th	33
FrCorySticha	33
ran4sh	32
Bruce	32
ElishaGOtis	32
Thunderbyrd316	31
thspfc	31
doorknob60	29
Ben114	29
CNGL-Leudimin	29
freebrickproductions	28
ftballfan	26
kphoger	26
mapman1071	24
therocket	24
cenlaroads	23
KEK Inc.	21
epzik8	21
elsmere241	21
jp the roadgeek	19
sharkyfour	19
fwydriver405	19
Takumi	18
dvferyance	17
bm7	15
Roadgeekteen	14
RyanB06	14
cwf1701	13
SoDakInterstateEnthusiast	13
kirbykart	13
Streetman	13
apeman33	12
JMoses24	12
ClassicHasClass	11
KEVIN_224	11
wxfree	9
computerfan0	9
jeffandnicole	8
PHLBOS	8
TheGrassGuy	8
WillWeaverRVA	8
Tarkus	7
TheStranger	7
Quillz	7
Pink Jazz	6
DeaconG	6
Poiponen13	6
Skye	5
Roadsguy	5
Super Mateo	4
JoePCool14	4
SoCal Kid	3
LilianaUwU	3
Occidental Tourist	3
Truvelo	2
bzaharin	2
Zeffy	2
Finrod	2
Kulerage	2
Aaron Camp	2
skquinn	2
MCRoads	2
snowc	2
RoadRebel	2
CoolAngrybirdsrio4	2
Hurricane Rex	1
idk	1

[drebbin37]

I drove segments of MD 381 and MD 382 (and later KY 382) during my most recent road trip, so my lowest untraveled number is now 398.

[Bickendan]

Got myself WA 109 (and all of US 101's child routes, save for the Edmonds portion of 104), putting me at... 111. annnnnnd I'll be stuck there for a long time, unless I can justify a trip out to SLC or down to Indio. And ODOT actually decommed ORH 124 and 125, so they're out.

[Rothman]

Some movement in the ranks.

formulanone	871
Rothman	801
oscar	661
Konza	623
Hot Rod Hootenanny	464
74/171FAN	455
jayhawkco	437
Duke87	432
Mapmikey	429
drebbin37	398
HTM Duke	386
cl94	382
corco	367
dlsterner	344
hbelkins	334
cockroachking	266
deathtopumpkins	249
froggie	248
Jim	216
paulthemapguy	207
US 89	192
NWI_Irish96	182
kurumi	179
plain	174
csw	174
rel4	170
hockeyjohn	154
dfilpus	149
A.J. Bertin	148
Thing 342	127
Scott5114	121
Buck87	112
SGwithADD	112
TheCatalyst31	112
Bitmapped	111
algorerhythms	111
Bickendan	111
bassoon1986	109
adwerkema	108
SEWIGuy	108
amroad17	107
Great Lakes Roads	107
tq-07fan	107
SD Mapman	107
Caps81943	103
clong	103
J N Winkler	103
sparker	102
TheHighwayMan394	102
DandyDan	102
sbeaver44	102
skluth	102
Flint1979	97
hobsini	97
jlam	97
1995hoo	96
MATraveler128	96
SkyPesos	89
7/8	88
I-55	86
flan	85
chesapeake256	84
CoreySamson	73
webny99	68
Eth	63
dantheman	61
bwana39	56
BrianP	53
mgk920	48
fredddie	48
boilerup25	48
milbfan	47
noelbotevera	47
TBKS1	47
ketchup99	47
stevashe	47
Big John	46
ozarkman417	46
Dough4872	43
texaskdog	42
Hunty2022	39
averageroadgeek	37
hen3ry	36
hotdogPi	36
ipeters61	35
Evan_Th	33
FrCorySticha	33
ran4sh	32
Bruce	32
ElishaGOtis	32
Thunderbyrd316	31
thspfc	31
doorknob60	29
Ben114	29
CNGL-Leudimin	29
freebrickproductions	28
ftballfan	26
kphoger	26
mapman1071	24
therocket	24
cenlaroads	23
KEK Inc.	21
epzik8	21
elsmere241	21
jp the roadgeek	19
sharkyfour	19
fwydriver405	19
Takumi	18
dvferyance	17
bm7	15
Roadgeekteen	14
RyanB06	14
cwf1701	13
SoDakInterstateEnthusiast	13
kirbykart	13
Streetman	13
apeman33	12
JMoses24	12
ClassicHasClass	11
KEVIN_224	11
wxfree	9
computerfan0	9
jeffandnicole	8
PHLBOS	8
TheGrassGuy	8
WillWeaverRVA	8
Tarkus	7
TheStranger	7
Quillz	7
Pink Jazz	6
DeaconG	6
Poiponen13	6
Skye	5
Roadsguy	5
Super Mateo	4
JoePCool14	4
SoCal Kid	3
LilianaUwU	3
Occidental Tourist	3
Truvelo	2
bzaharin	2
Zeffy	2
Finrod	2
Kulerage	2
Aaron Camp	2
skquinn	2
MCRoads	2
snowc	2
RoadRebel	2
CoolAngrybirdsrio4	2
Hurricane Rex	1
idk	1

[US 89]

I drove on US 192 in July without even thinking about the implications for this thread. That bumped me to 207, but I drove SH 207 in Texas in August, so now I am up to... 214.

I don't have any 205 in the US, but I have been on the N205 road in France, which I think counts well enough.

[Rothman]

A much belated update on my part:

formulanone	871
Rothman	801
oscar	661
Konza	623
Hot Rod Hootenanny	464
74/171FAN	455
jayhawkco	437
Duke87	432
Mapmikey	429
drebbin37	398
HTM Duke	386
cl94	382
corco	367
dlsterner	344
hbelkins	334
cockroachking	266
deathtopumpkins	249
froggie	248
Jim	216
US 89	214
paulthemapguy	207
NWI_Irish96	182
kurumi	179
plain	174
csw	174
rel4	170
hockeyjohn	154
dfilpus	149
A.J. Bertin	148
Thing 342	127
Scott5114	121
Buck87	112
SGwithADD	112
TheCatalyst31	112
Bitmapped	111
algorerhythms	111
Bickendan	111
bassoon1986	109
adwerkema	108
SEWIGuy	108
amroad17	107
Great Lakes Roads	107
tq-07fan	107
SD Mapman	107
Caps81943	103
clong	103
J N Winkler	103
sparker	102
TheHighwayMan394	102
DandyDan	102
sbeaver44	102
skluth	102
Flint1979	97
hobsini	97
jlam	97
1995hoo	96
MATraveler128	96
SkyPesos	89
7/8	88
I-55	86
flan	85
chesapeake256	84
CoreySamson	73
webny99	68
Eth	63
dantheman	61
bwana39	56
BrianP	53
mgk920	48
fredddie	48
boilerup25	48
milbfan	47
noelbotevera	47
TBKS1	47
ketchup99	47
stevashe	47
Big John	46
ozarkman417	46
Dough4872	43
texaskdog	42
Hunty2022	39
averageroadgeek	37
hen3ry	36
hotdogPi	36
ipeters61	35
Evan_Th	33
FrCorySticha	33
ran4sh	32
Bruce	32
ElishaGOtis	32
Thunderbyrd316	31
thspfc	31
doorknob60	29
Ben114	29
CNGL-Leudimin	29
freebrickproductions	28
ftballfan	26
kphoger	26
mapman1071	24
therocket	24
cenlaroads	23
KEK Inc.	21
epzik8	21
elsmere241	21
jp the roadgeek	19
sharkyfour	19
fwydriver405	19
Takumi	18
dvferyance	17
bm7	15
Roadgeekteen	14
RyanB06	14
cwf1701	13
SoDakInterstateEnthusiast	13
kirbykart	13
Streetman	13
apeman33	12
JMoses24	12
ClassicHasClass	11
KEVIN_224	11
wxfree	9
computerfan0	9
jeffandnicole	8
PHLBOS	8
TheGrassGuy	8
WillWeaverRVA	8
Tarkus	7
TheStranger	7
Quillz	7
Pink Jazz	6
DeaconG	6
Poiponen13	6
Skye	5
Roadsguy	5
Super Mateo	4
JoePCool14	4
SoCal Kid	3
LilianaUwU	3
Occidental Tourist	3
Truvelo	2
bzaharin	2
Zeffy	2
Finrod	2
Kulerage	2
Aaron Camp	2
skquinn	2
MCRoads	2
snowc	2
RoadRebel	2
CoolAngrybirdsrio4	2
Hurricane Rex	1
idk	1

[74/171FAN]

I clinched TN 455 on Friday so my number is now 466, which will probably not change for a while.

[JayhawkCO]

Just curious, as I didn't find it on a quick search. What's the lowest number that a) isn't an interstate and b) doesn't intersect an interstate? I just got to thinking about this as a lot of the numbers that I've "picked up" since playing this silly game of ours were ones that I could just easily exit off of an interstate I was traveling anyway to log a half a mile or so on the missing numbered highway. This could probably be its own thread, but it's only really "interesting" in the context of this thread since the first number that isn't adjacent to an interstate is where the collecting starts to become a little harder.

[JayhawkCO]

Just curious, as I didn't find it on a quick search. What's the lowest number that a) isn't an interstate and b) doesn't intersect an interstate? I just got to thinking about this as a lot of the numbers that I've "picked up" since playing this silly game of ours were ones that I could just easily exit off of an interstate I was traveling anyway to log a half a mile or so on the missing numbered highway. This could probably be its own thread, but it's only really "interesting" in the context of this thread since the first number that isn't adjacent to an interstate is where the collecting starts to become a little harder.

Starting my own investigation, but the lowest number that either isn't an interstate or a US Route intersecting an interstate is 28, but obviously there's a state route or ten out there that hit an interstate (started with AL28, and sure enough, intersect an interstate).

[NWI_Irish96]

Just curious, as I didn't find it on a quick search. What's the lowest number that a) isn't an interstate and b) doesn't intersect an interstate? I just got to thinking about this as a lot of the numbers that I've "picked up" since playing this silly game of ours were ones that I could just easily exit off of an interstate I was traveling anyway to log a half a mile or so on the missing numbered highway. This could probably be its own thread, but it's only really "interesting" in the context of this thread since the first number that isn't adjacent to an interstate is where the collecting starts to become a little harder.

Starting my own investigation, but the lowest number that either isn't an interstate or a US Route intersecting an interstate is 28, but obviously there's a state route or ten out there that hit an interstate (started with AL28, and sure enough, intersect an interstate).

IN has 28, 32, 38, and 47 to get you through everything the interstate and US highway system don't get that is less than 100. For added convenience, you can get them all in a 28-mile stretch of I-65.

[JayhawkCO]

Just curious, as I didn't find it on a quick search. What's the lowest number that a) isn't an interstate and b) doesn't intersect an interstate? I just got to thinking about this as a lot of the numbers that I've "picked up" since playing this silly game of ours were ones that I could just easily exit off of an interstate I was traveling anyway to log a half a mile or so on the missing numbered highway. This could probably be its own thread, but it's only really "interesting" in the context of this thread since the first number that isn't adjacent to an interstate is where the collecting starts to become a little harder.

Starting my own investigation, but the lowest number that either isn't an interstate or a US Route intersecting an interstate is 28, but obviously there's a state route or ten out there that hit an interstate (started with AL28, and sure enough, intersect an interstate).

IN has 28, 32, 38, and 47 to get you through everything the interstate and US highway system don't get that is less than 100. For added convenience, you can get them all in a 28-mile stretch of I-65.

Thanks. My nerdy brain is currently running through all of them. I'm up to 222 with no misses yet.

[JayhawkCO]

Finally found it. The lowest number that doesn't have a route that intersects an interstate is 334.

Showing my work. Obviously if the number is an interstate, I noted that first. Then I went through US Routes. If there's a state route listed, it's the first state alphabetically that has a highway that intersects an interstate.

Number		Highway
1		I-H1
2		I-H2
3		I-H3
4		I-4
5		I-5
6		US6
7		US7
8		US8
9		US9
10		I-10
11		I-11
12		I-12
13		US13
14		US14
15		I-15
16		I-16
17		I-17
18		US18
19		I-19
20		I-20
21		US21
22		I-22
23		US23
24		I-24
25		I-25
26		I-26
27		I-27
28		AL28
29		I-29
30		I-30
31		US31
32		CA32
33		US33
34		US34
35		I-35
36		US36
37		I-37
38		AR38
39		I-39
40		I-40
41		I-41
42		I-42
43		I-43
44		I-44
45		I-45
46		US46
47		CA47
48		US48
49		I-49
50		US50
51		US51
52		US52
53		US53
54		US54
55		I-55
56		US56
57		I-57
58		US58
59		I-59
60		US60
61		US61
62		US62
63		US63
64		I-64
65		I-65
66		I-66
67		US67
68		I-68
69		I-69
70		I-70
71		I-71
72		I-72
73		I-73
74		I-74
75		I-75
76		I-76
77		I-77
78		I-78
79		I-79
80		I-80
81		I-81
82		I-82
83		I-83
84		I-84
85		I-85
86		I-86
87		I-87
88		I-88
89		I-89
90		I-90
91		I-91
92		US92
93		I-93
94		I-94
95		I-95
96		I-96
97		I-97
98		US98
99		I-99
100		AR100
101		US101
102		AR102
103		CO103
104		AR104
105		I-105
106		AL106
107		AR107
108		IL108
109		FL109
110		I-110
111		AR111
112		AR112
113		AL113
114		FL114
115		I-115
116		FL116
117		US117
118		AL118
119		US119
120		CA120
121		CO121
122		CT122
123		CA123
124		I-124
125		CA125
126		I-126
127		US127
128		CA128
129		I-129
130		US130
131		US131
132		CA132
133		CA133
134		CA134
135		I-135
136		US136
137		CT137
138		US138
139		CO139
140		I-140
141		US141
142		NH142
143		AL143
144		CO144
145		AL145
146		GA146
147		AL147
148		AR148
149		AL149
150		US150
151		US151
152		AL152
153		CT153
154		CT154
155		I-155
156		CT156
157		AL157
158		US158
159		US159
160		US160
161		CT161
162		AR162
163		AL163
164		CT164
165		I-165
166		US166
167		US167
168		IN168
169		I-169
170		I-170
171		US171
172		I-172
173		CT173
174		AL174
175		I-175
176		I-176
177		US177
178		US178
179		AZ179
180		I-180
181		US181
182		I-182
183		US183
184		I-184
185		I-185
186		AL186
187		CA187
188		AL188
189		I-189
190		I-190
191		US191
192		US192
193		AL193
194		I-195
195		I-195
196		I-196
197		US197
198		CA198
199		US199
200		CT200
201		I-H201
202		US202
203		IL203
204		GA204
205		I-205
206		US206
207		FL207
208		FL208
209		US209
210		I-210
211		US211
212		US212
213		AL213
214		MD214
215		I-215
216		AL216
217		OR217
218		US218
219		US219
220		I-220
221		US221
222		US222
223		CA223
224		US224
225		I-225
226		NY226
227		IN227
228		FL228
229		I-229
230		GA230
231		US231
232		GA232
233		AL233
234		KY234
235		I-235
236		KY236
237		CA237
238		I-238
239		CO239
240		I-240
241		MN241
242		CA242
243		CA243
244		I-244
245		KY245
246		OH246
247		CA247
248		SD248
249		IN249
250		US250
251		GA251
252		IN252
253		AR253
254		KS254
255		I-255
256		IN256
257		GA257
258		US258
259		US259
260		AZ260
261		OH261
262		CA262
263		FL263
264		I-264
265		I-265
266		US266
267		CA267
268		NC268
269		I-269
270		I-270
271		I-271
272		MD272
273		CA273
274		NC274
275		I-275
276		I-276
277		I-277
278		I-278
279		I-279
280		I-280
281		US281
282		AR282
283		I-283
284		AR284
285		I-285
286		MA286
287		I-287
288		TX288
289		AZ289
290		I-290
291		I-291
292		NM292
293		I-294
294		I-294
295		I-295
296		I-296
297		FL297
298		NY298
299		AR299
300		AR300
301		US301
302		US302
303		AZ303
304		MS304
305		I-305
306		MS306
307		GA307
308		PA308
309		MS309
310		I-310
311		IN311
312		NY312
313		KY313
314		NM314
315		I-315
316		GA316
317		GA317
318		NY318
319		US319
320		CT320
321		US321
322		US322
323		TN323
324		GA324
325		NY325
326		FL326
327		SC327
328		LA328
329		KY329
330		IA330
331		US331
332		IN332
333		IA333
334

[JayhawkCO]

Incidentally, my only travel of a 334 is a very small stretch of MB334 that is concurrent with TCH1 in Headingley, Manitoba.

[Hot Rod Hootenanny]

I clinched TN 455 on Friday so my number is now 466, which will probably not change for a while.

Only took you 7 months to pass me again. I expected you to be in the 500s by now.