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The Pennsylvania State Route Numbering System
Border-Crossing Pennsylvania State Routes

Interstate and US highway routes naturally do not change numbers upon crossing a state line, while state routes typically change numbers. Some border-crossing routes were numbered or renumbered to match the number on the other side of the line. On some cases, an exact match could not be made because the number was assigned elsewhere in one of the states. In most cases, no attempt at matching state route numbers has been made. The table below lists all current state routes that cross the Pennsylvania border. Gray-shaded routes are ones that do not match numbers at the state line. Blue-shaded routes were renumbered to match green-shaded routes. Pairs of green-shaded routes were numbered or renumbered together to match.

 

Lake Erie & New York State Line
Pennsylvania New York
Formerly PA 99. PA 99 and PA 5 swapped routes to match NY 5. 5 5 Original designation.
Original designation. 90 90 Original designation.
Formerly PA 9. 20 20  
Formerly PA 189 west and south of New York. Renumbered to PA 426 on both segments to create a continuous Route 426 from Pennsylvania through New York and back to Pennsylvania. 426 426 Unchanged.
Originally built as PA 17 (duplicating the PA 17 in Perry County) to match adjacent the NY 17 freeway. Renumbered to I-86 when the designation was given to the Southern Tier Expressway. 86 86 17 The western part of NY 17 was relocated to the Southern Tier Expressway, which has become I-86/NY 17 at the state border.
Originally numbered to match NY 430. 430 430 Original designation.
Originally numbered to match NY 74, but PA 74, 174, 274, and 374 were already taken, so PA 474 was chosen. 474 474 Originally NY 74, but renumbered to match PA 474.
Second crossing. See PA 426 above. 426 426 Second crossing. See NY 426 above.
Original designation. 958 CR 33  
Original designation. 69 CR 69 Numbered to match PA 69.
Formerly PA 66. Renumbered to US 62 when US 62 was extended into Pennsylvania and New York. 62 62 Formerly NY 60.
The original border crossing is under the Allegheny Reservoir. There PA 159 met NY 280 at the border. Later a new NY 280 was built on the east shore of the reservoir, and PA 346 was connected to it. The new PA 159 is now PA 321 but ends at PA 346. 346 280 NY 280 was relocated to a new alignment to the east of the old alignment, which is now underneath the Allegheny Reservoir.
Formerly PA 6, then US 219/10. 219 219 Originally NY 18, then US 219/NY 18.
Original designation. 646 16 Originally NY 16A.
Original designation. 546 CR 45  
Original designation. 446 305 Originally NY 16.
Original designation. 44 ? PA 44 ends at the state line about 50 yards before meeting NY 417 in New York. Still looking for the name of the connecting road...
Original designation. 449 19 Original designation.
Original designation. 244 248A Original designation.
Originally PA 149. 249 36 Originally NY 21.
Originally PA 4, then US 111. 15 15 Originally NY 2, then US 15/NY 2.
Originally PA 826, then PA 287, then PA 84. Renumbered to match NY 328. 328 328 Original designation.
Original designation, though the match with NY 14 was probably planned. 14 14 Original designation, though the match with PA 14 was probably planned.
  SR 4013 367 Original designation.
  17 17 The NY 17 freeway dips briefly into Pennsylvania, but the designation and maintenance is left to New York.
Original designation. 220 220 Original designation.
Originally US 220/64, then US 220/US 309, then US 220. 199 34 Original designation.
  17 17 The NY 17 freeway dips briefly into Pennsylvania, but the designation and maintenance is left to New York.
Original designation. 187 282 Original designation.
Original designation. 858 CR 41  
Original designation. 267 26 Original designation.
Original designation. 167 CR 117  
Original designation. 29 7 Original designation.
Originally PA 602, then PA 70. SR 1033 7A Original designation.
Original designation. 81 81 Original designation.
Original designation. 92 79 Original designation.
Originally 90. 191 ? Not sure of the name of the connecting road from where PA 191 ends at the state line to NY 97.
  371 CR 114  
Originally 47, then US 106. Renumbered to match NY 52. PA 52, 152, 252, 352, and 452 were already assigned. 652 52 Original designation.
Originally 137, then 37. 434 55 Original designation.
Originally 7. 6 209 6 209  
Original designation. 84 84 Original designation.
Pennsylvania New York
New York/New Jersey State Line
Pennsylvania New Jersey
Original designation. 206 206 Originally NJ S31, then US 206/NY S31.
Original designation. 80 80 Original designation.
Originally US 22, then I-78/US 22. 22 22  
Original designation. 78 78 Original designation.
Original designation. 202 202 Original designation.
Originally PA 52, then US 122, then US 202. 179 179 Formerly US 202.
Original designation. Future I-295. 95 95 Original designation. Future I-295.
Original designation. 1 1 Original designation.
Originally I-280. Also the Pennsylvania Turnpike. 276 Pennsylvania Turnpike Extension Future I-95.
Originally PA 101. 413 413 Originally NJ S25.
Original designation. 73 73 Originally NJ S41.
  ? 90 Original designation.
Originally US 30, then I-80S/US 30, then I-76/US 30. 676 30 676 30 Originally US 30, then I-76/US 30.
Originally PA 43, then I-680, then I-676. 76 76 Originally I-680, then I-676.
Originally PA 61. 322 322 Originally NJ S44.
Pennsylvania New Jersey
New Jersey/Delaware State Line
Pennsylvania Delaware
Originally PA 91. 13 13  
Original designation. 491 491 Numbered to match PA 491.
Original designation. 95 95 Original designation.
Original designation. 261 261 Numbered to match PA 261.
Originally PA 29. 202 202  
Originally PA 62, then PA 100. Renumbered to continue to match PA 100 and DE 100. SR 3100 100 Numbered to match PA 100.
Original designation. 52 52 Numbered to match PA 52.
Original designation. 82 82 Numbered to match PA 82.
Original designation. 41 41 Numbered to match PA 41.
  SR 3013 7 Original designation.
Pennsylvania Delaware
Delaware/Maryland State Line
Pennsylvania Maryland
Originally PA 796. 896 896 Numbered to match PA 896 and DE 896.
Originally PA 472. 841 213 Originally MD 280.
Original designation but originally did not extend to the Maryland state line. Later extended to meet MD 272. 272 272 Originally designation. Coincidentally, neither PA 272 nor MD 272 needed to be renumbered to match numbers.
Originally PA 12. 1 1 Originally MD 1.
Originally PA 72. 222 222  
  Flintville Road 623 Original designation.
Original designation. 74 165 Original designation.
  SR 2080 624 Original designation.
  SR 2055 24 Original designation.
Original designation. 24 23 Original designation.
Originally US 111. 83 83 Originally US 111.
Originally US 111. SR 3001 45 Originally US 111.
Original designation. 516 86 Original designation.
Original designation. 94 30 Original designation.
Previously US 140. Renumbered to PA 97 when MD 97 replaced US 140. 97 97 Swapped routes with MD 140 north of Westminster when US 140 was demoted to MD 140.
Original designation. 194 194 Originally MD 71. Renumbered to match PA 194.
Original designation. 134 Harney Road  
Previously US 15.
BUSINESS
15
Old Gettysburg Road Previously US 15.
Original designation. 15 15 Original designation.
Original designation. 16 140 Originally MD 32, then MD 97. Renumbered to MD 140 when US 140 was demoted to MD 140, which immediately swapped routes with MD 97.
  SR 2013 550 Originally MD 81. Renumbered when I-81 came to Maryland.
  SR 2007 418 Original designation.
  997 64 Original designation.
Originally PA 997. 316 60 Original designation.
Originally PA 13. 11 11  
Original designation. 81 81 Original designation.
Numbered to match MD 63 (PA 63 was already used). 163 63 Original designation, a northward extension of the MD 63 that replaced MD 398.
Original designation. 416 Cearfoss Pike  
Original designation. 75 494 Original designation.
Original designation. 456 Hollow Road  
  SR 2001 615  
Original designation. 928 Timber Ridge Road Formerly MD 615.
Originally 76. 655 Pennsylvania Avenue  
Original designation. 70 522 70 522 Original designation.
Original designation. 26 Orleans Road  
Original designation. 326 Black Valley Road  
Originally PA 64. 220 220  
Original designation. 96 35 Original designation.
Original designation. 160 47 Original designation.
Original designation. SR 2010 546 Original designation.
Originally PA 6 and PA 60. 219 219  
Numbered to match MD 669. 669 669 Originally MD 417. Renumbered to match a PA state route number.
Originally PA 11, then PA 81. 40 40  
  SR 2013 42 Original designation.
Pennsylvania Maryland
Maryland/West Virginia State Line
Pennsylvania West Virginia
Original designation. 381 CR 8  
Originally PA 319. 857 857 CR 857 numbered to match PA 857.
Original designation. 43 43 Original designation. Under construction.
Originally PA 66. 119 119  
Original designation. 79 79 Original designation.
Originally 8. 19 19  
Original designation. 218 218 Numbered to match PA 218.
Original designation. 18 69 Formerly WV 70.
Original designation. 21 891 Formerly WV 89.
Original designation. 70 70 Original designation.
Originally PA 11, then PA 81. 40 40  
Original designation. 331 67  
Originally PA 31. 844 27  
  SR 4008
27		  
Original designation. 22 22 Original designation.
Originally US 22/3. SR 4004 105 Formerly US 22.
Originally PA 1. 30 30  
Pennsylvania West Virginia
West Virginia/Ohio State Line
Pennsylvania Ohio
Formerly PA 1. 68 39 Originally OH 20.
Original designation. 251 154 Original Designation.
Formerly PA 51. SR 4002 165 Formerly OH 14.
Original designation. 51 14 Originally OH 170, then OH 165.
Original designation. 351 617 Formerly OH 90.
Originally the Pennsylvania Turnpike, then I-80S/PA Tpk. 76/ PA Tpk 76/ OH Tpk Originally I-80S/OH Tpk.
Original designation. 108 Garfield Road  
Formerly PA 17. 317 630  
Formerly PA 317, then PA 17. 224 224 Originally OH 17.
Originally 217?, then US 22. 422 422 Originally OH 16, then US 22.
Original designation. 318 304  
Original designation. 80 80 Original designation.
Originally PA 65. 62 62 Originally OH 19.
Original designation. 718 305  
  SR 4002 609  
Original designation. 358 88 Formerly OH 87.
Originally PA 458. 58 5 Original designation.
Originally PA 58. 322 322 Originally OH 15.
Numbered to match OH 85, but PA 85 and 185 were already assigned. 285 85 Original designation.
Originally PA 77. 6 6 Originally OH 167.
Original designation. 198 167  
Originally PA 179. 226 84 Original designation.
Original designation. 90 90 Original designation.
Originally PA 9. 20 20 Originally OH 2.
Pennsylvania Ohio
Lake Erie & Ohio State Line

 

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