End of US highway 15 |
1926-1927
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1927-1934
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1934-1935
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1935-1950, 1951-1974
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1950-1951
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1974-present
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Mileage: in 1989 AASHTO listed a figure of 854 miles for US 15... however, that included the mileage of US 15's associated business/bypass/alternate routes. According to the state subtotals on AASHTO's 1989 spreadsheet, mainline US 15's actual end-to-end total at the time was 794 miles. That closely matches our own 2020 measurement, which yielded 793.4 miles. Historically, when it went to Rochester, US 15 was 881.5 miles long.
US 15 was an original 1926 route, commissioned to run between Rockingham and Harrisburg. In 1934 US 15 was rerouted such that the south end extended to Walterboro (more info on those pages). In 1935 the north end of US 15 was approved to Rochester. In Pennsylvania that extension replaced the northernmost section of US 111; New York may not have signposted their segment until 1939:
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Travel between Painted Post and Rochester would soon be accomplished via I-390 and the Southern Tier Expwy, which was already complete in the Corning area by the time the US 15 designation was truncated. So US 15 never ended at the historic junction of Hamilton and High Streets in Painted Post. Rather, it ended at an interesting interchange with NY 17:
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In 1994 there was just US 15, NY 17, and 417. The 2000 photo showed that the I-86 designation had been added to the NY 17 corridor. A few years later, construction was underway to replace this diamond interchange with a tri-level stack interchange, in order to accommodate a new limited-access freeway for US 15 traffic (which would later become an extension of I-99). These photos show the temporary signage there, as well as the replacement sign bridge:
By 2010 the panel included a NY 352 sign, and the control point "Elmira" was changed to "Binghamton". An I-99 shield was added to these overhead signs in about 2014, but initially those replaced the US 15 shields, which were not added back until about 2016. Here is a more current photo of the same sign bridge:
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The road straight ahead used to be US 15, back when the designation continued up to Rochester. Now that the interchange with I-86 has been reconfigured, US 15 traffic can no longer get to that intersection (at least not directly).
Research and/or photo credits: Jesse Bender; George Bourey; Doug Kerr; Alex Nitzman; Greg Osbaldeston; Dale Sanderson; Michael Summa; Mike Wiley
Page originally created 2000;
last updated Dec. 29, 2023.
last updated Dec. 29, 2023.