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An unused highway may reference a highway or highway ramp that was partially or fully constructed but was unused〔See: * * * * * * * *〕 or later closed.〔See: * * *〕 An unused ramp can be referred to as a stub ramp, stub street, stub-out,〔 or simply stub. ==Alabama== ;Birmingham :Between exits 121 and 123 along Interstate 20/Interstate 59 (I-20/I-59) is an abandoned stretch of mainline Interstate along the southbound lanes. These lanes were utilized in 1977 as temporary lanes while the mainlines were being repaired as a result of sinkhole formation. () :An unused ramp exists along U.S. Route 11 (US-11, 1st Avenue North) at its northbound intersection with U.S. Route 31/U.S. Route 280. The ramp was abandoned with the completion of the I-20/I-59 and U.S. 31/U.S. 280 interchange located just to its north.〔(【引用サイトリンク】work= AARoads )〕 () ;Gadsden :Mainline stubs and an exit stub exist at the current western terminus of Interstate 759 at I-59 for an eventual planned extension to U.S. Route 431 west of Attalla. () There are also plans to extend I-759 east to US 431/US 278.〔(【引用サイトリンク】title=I-759 Alabama )〕 I-759 transitions into Alabama State Route 759 (SR-759), a two-lane surface road that connects the interstate to Alabama State Route 291, at its eastern terminus. There is bridgework being done that indicates an upgrade of SR-759 to Interstate Highway standards.〔(【引用サイトリンク】work=AARoads )〕 () ;Tuscaloosa :A stub exists at the current southern terminus of Alabama State Route 297 after its crossing of the Paul Bryant Bridge at the Jack Warner Parkway. Future plans call for the route to continue southward from this point. () ;Centreville :There is a half-built bypass of Brent and Centreville that carries U.S. Route 82/Alabama State Route 2199. It ends at Alabama State Route 25 (SR 25) as a parclo interchange. As of mid-2014, satellite photography showed an extension of the bypass three miles to the east under construction.〔(【引用サイトリンク】title= Alabama Fantasy Freeways )〕 () ;Montgomery :Construction has started on a bypass of downtown, east of the city center. The bypass, planned to be signed as Interstate 85 (I-85), is to be in the southeastern quadrant of the area,〔(【引用サイトリンク】title=Montgomery Outer Loop )〕 intersecting I-85 near mile marker 14 and Interstate 65 near mile marker 163. An aerial view shows there is only a short portion of the bypass graded. () The current I-85 west will be resigned Interstate 685 after the bypass is completed. :The southern interchange of U.S. Route 80 and I-65 suggests that, at one point, there were plans to continue an expressway east. The interchange is a modified and awkward trumpet with grading continuing east. There is also a stub lane for the eastbound direction and grading for a second overpass over I-65. () ;Mobile :Some full cloverleaf interchanges have been reconfigured and ramps removed. All that remains is the ramp grading. They are located at I-65 and Alabama State Route 16 (Government Boulevard, ) I-65 and County Road 56 (Airport Boulevard, ) and I-65 and U.S Route 45 (St. Stephens Road, ). ;Phenix City :There are mainline stubs on U.S. Route 80/US 280/Alabama State Route 8 (Phenix City Bypass) near where it intersects with U.S. Route 431/Alabama State Route 1 (280 Bypass) outside the city. () The stubs suggest a possible extension. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of unused highways in the United States」の詳細全文を読む スポンサード リンク
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