| 词条 | South Dakota Highway 240 |
| 释义 |
|state=SD |type=SD |route=240 |section=216 |alternate_name=Badlands Loop |length_mi=40.033 |length_ref=[1] |direction_a=West |terminus_a={{Jct|state=SD|I|90|BS|90|dab2=Wall|US|14}} in Wall |junction={{Jct|state=SD|SD|377}} in Badlands National Park northeast of Interior |direction_b=East |terminus_b={{Jct|state=SD|I|90}} south of Cottonwood |counties=Pennington, Jackson |previous_type=SD |previous_route=239 |next_type=SD |next_route=244 }} South Dakota Highway 240 (SD 240), also signed as the Badlands Loop, is a {{convert|40.033|mi|km|adj=mid|-long}} state highway located in the southeastern part of Pennington and the northwestern part of Jackson counties of the southwestern part of the U.S. state of South Dakota. It travels through the eastern portion of Badlands National Park. Route descriptionSD 240 begins in Wall at exit 110 of Interstate 90 (I-90). From this point, it travels south to Badlands National Park, where it turns southeast. At the Badlands Headquarters at Cedar Pass, the highway turns northeast, ending at exit 131 of I-90 near Cactus Flat. The total length of SD 240 is approximately {{convert|40|mi}}. Because the route enters a national park, there is an entrance fee charged along the highway at either entrance to the park. The fee is $15 per passenger vehicle, good for 7 days. History{{Unreferenced section|date=January 2018}}Eastern portions of the highway that are currently SD 240 (generally from the park headquarters to Cactus Flat) were originally part of the original alignment of SD 40. Construction began in the early 1930s. By 1944, a gravel surface was on the Badlands Loop alignment, and by the late 1940s, the Badlands Loop was signed as U.S. Route 16 Alternate (US 16 Alt.), in addition to SD 40 along the eastern portion of the loop. These two numbers were used until the early 1970s, when the SD 40 number was replaced by an extension of SD 44 (which entered the park from the southeast rather than the northeast). Around 1980, US 16, which traveled concurrently with I-90, was truncated at its eastern end to Rapid City. Since US 16 Alt. no longer met the parent route, the route number was changed to SD 240. Major intersections{{SDinttop|length_ref=[1]}}{{SDint|county=Pennington |location=Wall |mile=0.000 |road={{Jct|state=SD|I|90|US|14|name2=I-90 Bus. west (Glenn Street north)|city1=Rapid City|city2=Kadoka}} |notes=Western terminus of SD 240; eastern terminus of I-90 Bus.; southern terminus of Glenn Street; I-90 exit 110 }}{{Jctint |state=SD |county=Jackson |cspan=2 |location_special=Badlands National Park |mile=31.512 |road={{Jct|state=SD|SD|377|dir1=south|to2=y|SD|44|city1=Interior|city2=Rapid City|location3=Cedar Pass Campground}} |notes=Northern terminus of SD 377 }}{{SDint |location=none |mile=40.033 |road={{Jct|state=SD|I|90|road=Cottonwood Road north|city1=Wall|city2=Kadoka}} |notes=Eastern terminus; roadway continues as Cottonwood Road; I-90 exit 131 }}{{Jctbtm}} References1. ^1 {{cite web|url=http://www.sddot.com/pe/data/pave.asp|title=Transportation Inventory Management|publisher=South Dakota Department of Transportation|accessdate=December 17, 2011}} External links{{Attached KML|display=title,inline}}
5 : State highways in South Dakota|Transportation in Pennington County, South Dakota|Transportation in Jackson County, South Dakota|U.S. Route 16|Badlands National Park |
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