Roads that enter one county twice

[ftballfan]

I-465 goes Marion-Boone-Marion-Hamilton-Marion on the north side of Indianapolis.

I-70 goes Morgan-Hendricks-Morgan-Hendricks southwest of Indianapolis.

I-64 goes Vanderburgh-Gibson-Vanderburgh-Gibson near Evansville.

I-64 goes Spencer-DuBois-Spencer-DuBois west of Louisville.

I-285 goes Fulton-Cobb-Fulton-DeKalb-Fulton-Clayton-Fulton around Atlanta.

[jemacedo9]

The US 422 freeway in Eastern PA, heading east, starts in Berks County, then crosses into Montgomery, then Chester, then Montgomery, and eventually ends along the Montgomery/Chester border.

[ftballfan]

Add in I-275 which goes Manatee-Hillsborough (very briefly over water)-Pinellas-Hillsborough in Tampa-St. Pete.

Also, Florida's Turnpike goes Osceola-Indian River-Okeechobee-Indian River-St. Lucie

[hbelkins]

Don't know why I didn't think of this earlier, but SR 102 wanders between Virginia and West Virginia several times.

http://goo.gl/maps/NVCz9

[NWI_Irish96]

In Indiana, I-465 goes from Marion County to Boone County back to Marion County then to Hamilton County and finally back to Marion County.

[pj3970]

Here's one...US 20 in Upstate New York from Bridgewater to West Winfield goes Onieda, Otsego, Herkimer, Onieda, and Herkimer

[Molandfreak]

Don't know why I didn't think of this earlier, but SR 102 wanders between Virginia and West Virginia several times.

http://goo.gl/maps/NVCz9

Well, off of that...

http://goo.gl/maps/DzRmT
http://goo.gl/maps/GFYYB

[Road Hog]

Arkansas 43 and Oklahoma (yes, Oklahoma) 20 enter Benton County, AR twice.  Arkansas 16 enters Pope County 4 times.

16 is a real wiggler. I took that road to go camping a few years ago and AHTD doesn't even bother to sign the multiple crossings between Pope and Newton County.

The normal practice of AHTD is to assign a new section number at county lines, but AHTD keeps 16 as Section 8 all the way through until it finally crosses over into Searcy County.

[vdeane]

Here's one...US 20 in Upstate New York from Bridgewater to West Winfield goes Onieda, Otsego, Herkimer, Onieda, and Herkimer

Actually it's Oneida, Ostego, Herkimer, Ostego, Herkimer, Ostego

That reminds me, I-88 does this too.  Heading east, you enter Delaware county, dip into Ostego for 1/10 mile (yes, it's fully signed), re-enter Delaware, then finally enter Ostego properly.

[Takumi]

VA 199 goes York-James City-Williamsburg-James City-York.
VA 143 goes James City-York-James City-York-Williamsburg-York.
James City secondary route 615 technically has a gap that passes through Williamsburg, but there is a 615 shield in each direction within Williamsburg city limits.
Between James City County, Williamsburg, and York County, I changed jurisdictions 23 times in about 3 hours today.

[KEK Inc.]

CA-146 dips in and out of Monterey County up by Pinnacles.  (At least according to Google Map boundaries)

As NE2 pointed out, CA-35 winds through Santa Cruz and Santa Clara Counties, but it also meanders in and out of San Mateo County.

CA-9 slips into San Mateo County.

WA-420 goes between King and Pierce county and crosses borders at Chinook Pass.

I-5 in Clark County & Cowlitz County by Horseshoe Lake

OR-219 between Washington and Yamhill Counties (winding road on straight county border).

[jp the roadgeek]

MA/NH Route 286 meanders from Essex County, MA into Rockingham County, NH, then briefly back into Essex County, then ends just north of the state line once again at NH 1A.

NH 113B is even more interesting, actually beginning in Cumberland County Maine, entering Carroll County, NH, then ending back in Cumberland County.

[ftballfan]

MA/NH Route 286 meanders from Essex County, MA into Rockingham County, NH, then briefly back into Essex County, then ends just north of the state line once again at NH 1A.

NH 113B is even more interesting, actually beginning in Cumberland County Maine, entering Carroll County, NH, then ending back in Cumberland County.

Throw in the fact that NH/ME 113 is a three legged route in that area and the third leg crosses the state line at least four times.

[jp the roadgeek]

MA/NH Route 286 meanders from Essex County, MA into Rockingham County, NH, then briefly back into Essex County, then ends just north of the state line once again at NH 1A.

NH 113B is even more interesting, actually beginning in Cumberland County Maine, entering Carroll County, NH, then ending back in Cumberland County.

Throw in the fact that NH/ME 113 is a three legged route in that area and the third leg crosses the state line at least four times.

Technically, NH 113 and ME 113 are unrelated, but  NH 113B is related to ME 113, and ME 113 crosses into and out of NH twice, but maintains ME state highway status. One would think they are connected, but they aren't.

[ftballfan]

MA/NH Route 286 meanders from Essex County, MA into Rockingham County, NH, then briefly back into Essex County, then ends just north of the state line once again at NH 1A.

NH 113B is even more interesting, actually beginning in Cumberland County Maine, entering Carroll County, NH, then ending back in Cumberland County.

Throw in the fact that NH/ME 113 is a three legged route in that area and the third leg crosses the state line at least four times.

Technically, NH 113 and ME 113 are unrelated, but  NH 113B is related to ME 113, and ME 113 crosses into and out of NH twice, but maintains ME state highway status. One would think they are connected, but they aren't.

It's a major coincidence that NH 113 and ME 113 happen to be so close to one another.

[SteveG1988]

NJ Route 73 starts in Atlantic County before entering camden county, leaving camden county after 10 miles, entering burlington county, after 10 miles it leaves burlington county for camden county again then enters burlington county again, before exiting to philly 2 mi later

[bulldog1979]

US 127 in Michigan straddles the Hillsdale—Lenawee county line, crossing fully into Hillsdale then Lenawee then clipping the corner of Hillsdale before crossing into Jackson County.

M-72, as mentioned above zig-zags along the Leelanau—Grand Traverse county line.

M-134 crosses out of Mackinac County headed eastbound into Chippewa County. There's a sliver of land along Lake Huron that is part of Mackinac County, and the highway dips back into Mackinac County before returning to Chippewa just west of the M-48 junction

Depending on how the county lines are drawn in the Straits of Mackinac, I-75 may cross back into Cheboygan County on the Mackinac Bridge. There are no county line signs on the bridge, but MDOT's Physical Reference Finder mapping application indicates that the section of the southern approaches over the visitor center for Fort Michilimackinac is on the Cheboygan County side of Mackinaw City. If that's true, then I-75 runs northward out of Cheboygan into Emmet and back into Cheboygan before entering Mackinac County.

When US 31 was routed along I-75 to the foot of the Mackinac Bridge, it crossed out of Cheboygan County back into Emmet County at the Nicolet Street interchange.

Federal Forest Highway 13 (also H-13) crosses back and forth along the Alger—Schoolcraft county line.

[Laura]

Interstate 24 goes in and out of Hamilton County, Tennessee, and ducks into Dade County, Georgia.

Yes, and the Georgia portion uses the Tennessee mileage and exit numbers in this section.

[deathtopumpkins]

Re: NH/ME routes,
According to CHM, NH 153 crosses into Maine for 2 miles to pass around Province Lake, and ME 110 crosses into NH for 0.1 miles to end at NH 153 a few miles south of there.
NH 113B, however, is shown as having its south end 1 mile into Maine, and its north end right on the border, at 113. Both north and south of 113B, ME 113 crosses into NH, for a total of 6.2 miles.

Those are the only border-hopping routes in New England that I know of, and I consider CHM a pretty reliable source.

There's also NH/MA 286, which comes close, but only crosses once. Google Maps shows it briefly crossing back into Mass before the eastern end at NH 1A, but it's not signed as such.

[Alps]

Re: NH/ME routes,
According to CHM, NH 153 crosses into Maine for 2 miles to pass around Province Lake, and MA 110

ME

[deathtopumpkins]

Re: NH/ME routes,
According to CHM, NH 153 crosses into Maine for 2 miles to pass around Province Lake, and MA 110

ME

Typo. Probably just so used to typing MA 110 since I live near it.

[jemacedo9]

PA 54 starting at PA 61 in Northumberland Co, crosses into a corner of Montour Co just north of PA 487, then back into Northumberland, then crosses the Susquehanna River back into Montour, then several miles west, BACK into Northumberland, and then eventually into Lycoming.

PA 44 in Jersey Shore PA, in Lycoming Co, joins US 220 and crosses into Clinton Co.  Right after leaving US 220, crosses back into Lycoming, then at Haneyville, straddles the Lycoming/Clinton line, before the county line turns, leaving PA 44 back in Lycoming.

[Big John]

Interstate 24 goes in and out of Hamilton County, Tennessee, and ducks into Dade County, Georgia.

Yes, and the Georgia portion uses the Tennessee mileage and exit numbers in this section.

Actually uses Tennessee exit numbers, but uses Georgia mileage.

[Kacie Jane]

I'm surprised it hadn't been mentioned yet, I-195 in New Jersey goes Mercer-Monmouth-Ocean-Monmouth.

[CrossCountryRoads]

Not sure if anyone mentioned it yet, but I-40 in Texas enters Gray County twice I believe.