Roads that enter one county twice

[cpzilliacus]

Md. 650 (New Hampshire Avenue) leaves Washington, D.C. with the northbound lanes in Prince George's County and the southbound lanes in Montgomery County (City of Takoma Park).

At Md. 410 (East West Highway), the road enters Montgomery County (still in Takoma Park) entirely.

At Md. 193 (University Boulevard), the road leaves Montgomery County and enters unincorporated Prince George's County. 

At (roughly) Northhampton Drive, Md. 650 crosses the county line again at an acute angle, and then continues on its way for many miles north in Montgomery County, coming fairly close to, but  never entering, Howard County.

[cpzilliacus]

Then there is Md./Del. 54.  From the west, starts out in Maryland at Mardela Springs, then enters Delaware, then comes back to run on top of the state line for quite a few miles, then turns back into Delaware, before it finally  ends at Delaware 1 just short of the Atlantic Ocean, and a block north of the state line (and the northern border of Ocean City, Maryland).

[roadman65]

 I guess I-684 counts in New York.  It  goes from Westchester County, NY; to Fairfield County, CT; then back into Westchester County, NY.

[xcellntbuy]

Columbia County 2/Dutchess County 78 in New York bounces between the two counties.  When it crosses the Taconic State Parkway as Jackson Corners Road, the east side of the exit from the Parkway is in Dutchess County and west side of the same exit is in Columbia County.  Columbia County 2 travels east passed Elizaville and then dips slightly south back into Dutchess County.

[mjb2002]

Only one I know of in my area is SC Route 217. It starts in Colleton County, then enters Bamberg County, then (after it multiplexes with SC Route 362 East) re-enters Colleton County.

[brownpelican]

La. 70 leaves Ascension Parish into Saint James Parish to cross the Sunshine Bridge over the Mississippi River. After that crossing, it goes back into Ascension Parish near Donaldsonville.

[ftballfan]

Found only one in Michigan, and it is on US-127 in far southern Michigan. From the Ohio line, it runs on the Hillsdale/Lenawee county line, then it curves into Hillsdale County, followed by a curve into Lenawee County, then back into Hillsdale County just before entering Jackson County.

[gonealookin]

Westbound from the south end of Carson City, US 50 dips into Douglas County for about 1/2 mile, then returns to Carson City (the limits of which extend all the way west to the middle of Lake Tahoe).  A mile or so before Spooner Summit it then returns to Douglas County and stays there until reaching the California state line.

(Edit:  Image posted on Photobucket deleted)

[JMoses24]

A couple I've encountered:

I-75 goes Kenton-Boone-Kenton from south to north in Kentucky
I-70 in Indiana goes from Hendricks County, clips the northwest corner of Morgan County, then re-enters Hendricks before finally re-entering Morgan County.

You want one that takes the cake? I'll give you one.

I-26 in South Carolina does the following (from NW to SE): Starts in Lexington County (at exit 91), goes into Richland County (exits 97-103) then goes back into Lexington County (exits 104 and 106), back a second time to Richland County (exits 107 to 108B), then back to Lexington County for a third time (exits 110-119 including the I-77 south terminus), to Calhoun County for exit 125, goes back to Lexington County a FOURTH time for exit 129, and at last returning to Calhoun County.

[DTComposer]

California state route 166 crosses between Santa Barbara and San Luis Obispo counties at least five times.  it's a river crossing each time, but I cannot remember which river.

It's the Santa Maria River.

At La Mirada/Buena Park, CA-39 goes from Orange to Los Angeles to Orange to Los Angeles to Orange County. The "unconstructed" routing continues back into Los Angeles County north of La Habra, and the signed routing picks up again in Asuza.

[DandyDan]

The only one I can find for Iowa is US 18, which goes thru the NW corner of Clayton County, meets US 52 and goes thru Postville in Allamakee County, then turns SE to go back into Clayton County.

[JMoses24]

I forgot one. While it is a full circular beltway around Cincinnati, I-275 does, in fact fit this definition. It enters Hamilton County at the Ohio River near Fort Thomas, Kentucky, proceeds eastward to cross the Clermont County line near exit 65 (Ohio Route 125), turns north from there and then turns back northwest to re-enter Hamilton County somewhere near the Loveland exit, exit number 52.

[txstateends]

TX 204, going east (actually more like SE at this point) goes out of Cherokee County into Rusk County briefly, then back to Cherokee County through the town of Reklaw, then just afterward, over the Angelina River into Nacogdoches County.

[jp the roadgeek]

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

[dgolub]

One more: NY 120A goes into Fairfield County, Connecticut, for a short distance.  The rest of it is in Westchester County, New York.

[vdeane]

We seems to have a lot of re-postings on this forum lately, especially this thread...

I-684 crosses from Westchester County, NY, to Fairfield County, CT, and then back to Westchester.

I guess I-684 counts in New York.  It  goes from Westchester County, NY; to Fairfield County, CT; then back into Westchester County, NY.

[wxfree]

US 290 going east from Lee County, Texas: Lee County, Fayette County, Washington County, Fayette, Washington, Fayette, Washington.

[CNGL-Leudimin]

How about US 52 and US 119 in KY and WV? US 119 going North passes through Pike county, KY-Mingo county, WV (US 52 multiplex starts here)-Pike-Mingo-Pike-Mingo. And East of there, US 52 dips onto Logan county, so it enters Mingo four times.

[ftballfan]

Found another one in Michigan: M-72 west of Traverse City. It comes in from the west and Leelanau County, then runs on the Leelanau/Grand Traverse county line for about four miles, then wholly into Leelanau County, then wholly into Grand Traverse County, then back into Leelanau County, before settling on the county line for a few hundred feet. Then it turns south and stays in Grand Traverse County at the Traverse City city limits.

[corco]

Texas 71 enters Mason County, jumps into San Saba County, and then goes back into Mason County over the course of about three miles

US-95 in Idaho goes from Idaho County to Adams County to Idaho County to Adams County. The county line is the Little Salmon River, which the highway crosses a few times.

[ibagli]

OH-32 goes Brown-Highland-Brown-Highland-Brown.

[jp the roadgeek]

CT 179: Hartford>Litchfield>Hartford

[Mark68]

Denver's unique status as a consolidated city/county government means that there are a lot of entrances/exits. Glendale, a city in Arapahoe County, is surrounded completely by the City & County of Denver, which means that CO 83 (Leetsdale Dr) leaves Denver Co, enters Glendale, enters Denver again, leaves Denver and enters Arapahoe Co as Parker Rd (into Aurora), then the southbound side enters Denver again twice: between Iliff Ave & Havana St, then between Dartmouth Ave & Peoria St. Then Parker Rd eventually leaves Arapahoe Co and heads into Douglas Co.

So, on SB 83, which begins in Denver goes into Arapahoe/Denver/Arapahoe/Denver/Arapahoe/Denver/Arapahoe/Denver/Arapahoe/Douglas, and NB 83 goes Douglas/Arapahoe/Denver/Arapahoe/Denver.

Colorado Blvd (CO 2) forms the western boundary of Glendale. The north end is in Commerce City (Adams) at US 6/85, then SB heads into Denver, with the highway portion ending at Hampden Ave (US 285) on the Denver/Cherry Hills Village (Arapahoe) border, but NB goes thru Denver/Glendale (Arapahoe)/Denver/Glendale/Denver/Commerce City (Adams).

US 285 (Hampden Ave) from west to east (south to north directions on 285): Jefferson/Denver/Jefferson (NB)/Denver/Arapahoe/Denver (SB)/Denver (both directions).

US 287 (Federal Blvd south to Colfax Ave east): Adams/Denver/then Adams on the north side and Arapahoe on the south side.

CO 121 (Wadsworth Blvd) from north to south: Jefferson/Denver (NB)/Jefferson/Denver/Jefferson/Denver/Jefferson.

CO 95 (Sheridan Blvd) from north to south: Jefferson (SB) & Adams (NB)/Denver/Jefferson (SB) & Denver (NB)/Denver/Jefferson & Denver/Denver/Jefferson & Denver/Denver.

CO 88 (Federal Blvd south of Colfax/Belleview Ave east of Federal): Denver/Arapahoe/Denver (SB) & Arapahoe (NB)/Arapahoe/Denver (WB) & Arapahoe (EB)/Arapahoe.

CO 30 (Hampden Ave east of I-25/Havana St north of Hampden/6th Ave east of Havana): Denver/Denver (WB) & Arapahoe (EB)/Denver/Denver (SB) & Arapahoe (NB)/Arapahoe/Denver (SB) & Arapahoe (NB)/Arapahoe/Denver (SB) & Arapahoe (NB)/Arapahoe.

E-470 Tollway also enters Denver briefly near the airport (Denver annexed a strip of land along Pena Blvd, the access road), so that from either direction, it goes thru Adams/Denver/Adams.

[mjb2002]

Interstate 526 begins in Charleston County, then enters Berkeley County and enters Charleston County for the final time.

NOTE: If the Savannah River Site was considered as part of Aiken County (29808 is an Aiken zip code just for SRS), then SC 125 would officially enter Barnwell County near Hattieville for only 0.6 miles, then enter Allendale County, then re-enter Aiken County about 3 miles east of Millett, then enter Allendale County for the final time to its southern terminus at US 278/301 in Allendale.

[golden eagle]

I-59 enters Forrest and Lamar counties in south Mississippi twice. I-55 enters Hinds County/city of Jackson twice.

I-285 enters Fulton County twice in the Atlanta and 459 does the same in the Jefferson County/Birmingham area.