System information PA Route (left) and Quadrant Route (right) signs All routes are assigned State Route (SR X) numbers, usually corresponding to the signed numbers. State Routes are generally state-maintained. Interstate X (I-X) U.S. Route X (US X) Pennsylvania Route X (PA Route X; PA X)

In the U.S. state of Pennsylvania, state highways are maintained by the Pennsylvania Department of Transportation. Each is assigned a four-digit State Route (SR) number in the present Location Referencing System. Traffic Routes are signed as Interstate Highways, U.S. Routes and Pennsylvania Routes (PA Routes), and are prefixed with one to three zeros to give a four-digit number. PA Routes are also called Pennsylvania Traffic Routes, and formerly State Highway Routes.[1] The symbol used for the signage of state routes is an outline of the keystone after Pennsylvania's nickname. Four-digit State Routes are unsigned, except on small white reference markers at intersections, and are only unique within each county. They are assigned as follows:[2]

• 0001-0999: Traffic Routes, the first 0 is usually not existent on the markers
• 1001-4999: Quadrant Routes, assigned by rough quadrant in the county, going clockwise from northeast (1) to northwest (4)
• 6001-6999: Relocated Traffic Routes (including alternate lanes such as local lanes or HOV lanes), assigned a number equal to the old number plus 6000
• 7001-7999: turned back, abandoned, or null routes (7076, 7276, and 7476 are used for sections of the Pennsylvania Turnpike)[3]
• 8001-8999: interchanges, with one number per interchange
• 9101-9199: wye connections
• 9201-9299: rest areas
• 9301-9399: truck escape ramps

Underneath, there is a larger typeface number, usually in multiples of 10, which is used to mark the highway in increments. More specifically, they are spaced every half-mile. To calculate the distance, simply divide the number by 20. For example, a sign reading a 240 means it is at mile 12. The numbers start either from the south or west of the county or state line or beginning of the highway.

Bannered routes are not assigned State Route numbers corresponding to their signed numbers, but are instead marked along other routes, mostly Quadrant Routes.

Concurrencies are assigned a number equal to the smaller of the concurrent routes, or the highest type (Quadrant Route → PA Route → U.S. Route → Interstate).[2]

Occasionally, a signed Traffic Route number does not match the State Route, usually in the case of an extension or relocation. (One example is Pennsylvania Route 3, which uses a one-way pair of Quadrant Routes in downtown Philadelphia.) A different number can also be used to avoid conflicts between different types — for instance, signed Pennsylvania Route 380 is actually State Route 400, renumbered ca. 1973 when Interstate 81E was renumbered Interstate 380. The majority of, but not all, signed Traffic Routes are state-maintained.[4]

## History

1926 state route shield

In 1911, when the Sproul Road Bill was passed, a large number of Legislative Routes (LR) were assigned. These were the primary internal numbering until the present Location Referencing System was adopted in 1987. See also list of Legislative Routes in Pennsylvania.

Signed Traffic Route numbers from 1 to 12 were first assigned in 1924[5] to several of the national auto trails:[6]

Soon more numbers were assigned, including three-digit numbers for branches, like Pennsylvania Route 272 from Pennsylvania Route 72. The United States Numbered Highways were assigned in late 1926, and in 1928 State Routes concurrent with U.S. Routes were removed, while those that conflicted with U.S. Routes were assigned new numbers. The establishment of the Interstate Highway System in 1959 resulted in a small renumbering in 1961.

## List of State Routes

Current Former
PA 2
PA 3
PA 4
PA 5 (Alternate)
PA 7
PA 9
PA 10
US 11 PA 11
PA 12
US 13 PA 13
PA 14
PA 16
PA 17
US 19 (Truck) PA 19
US 20
PA 21
PA 23 Alternate; Truck
PA 24
PA 25
PA 26
PA 27 (Truck)
PA 28 (Truck) Alternate
PA 29
PA 31
PA 32
PA 33
PA 34
PA 35
PA 36
PA 37
PA 38
PA 39
PA 41
PA 42 (Truck)
PA 43
PA 44
PA 45 (Truck (Mifflinburg); Truck (Huntingdon County)
PA 46 US 46
PA 47
PA 48
PA 49
PA 50
PA 51 (Truck) Alternate
PA 52
PA 53
PA 54
PA 55
PA 56 (Truck)
PA 57
PA 58
PA 59
PA 60
PA 61 (Truck)
PA 63
PA 64
PA 65
PA 67
PA 68
PA 69
I-70 I-70S; PA 70
PA 71 (Alternate)
PA 72
PA 73
PA 74
PA 75
I-76 PA 76
PA 77
I-78 PA 78
I-79 PA 79
I-80 I-80N; I-80S; PA 80
I-81 I-81E; PA 81
PA 82
I-84 PA 84
PA 85
I-86; PA 86
PA 87
PA 88 (Truck)
PA 89
I-90 PA 90
PA 91
PA 92
PA 93
PA 94
I-95 PA 95
PA 96
PA 97 (south, north)
PA 98
I-99; PA 99
PA 100 (Truck)
PA 101
PA 102
PA 103
PA 104
PA 105
PA 106 US 106
PA 107
PA 108
PA 110
US 111
PA 112
PA 113
PA 114
PA 115
PA 116
PA 117
PA 118
US 119
PA 120 US 120
PA 121
US 122
PA 123
PA 124
PA 125
PA 126
PA 127
PA 128
PA 129
PA 130
PA 131
PA 132
PA 133
PA 134
PA 135
PA 136
PA 137
PA 138
PA 139
US 140
PA 141
PA 142
PA 143
PA 144
PA 145
PA 146
PA 147
PA 148 (Truck)
PA 149
PA 150
PA 151
PA 152
PA 153
PA 154
PA 155
PA 156
PA 157
PA 158
PA 159
PA 160
PA 161
PA 162
PA 163
PA 164
PA 166
PA 167
PA 168
PA 170
PA 171
PA 172
PA 173
PA 174
I-176 PA 176
PA 177
PA 178
PA 179
I-180 I-180 (1959); PA 180
PA 181
PA 182
PA 183
PA 184
PA 185
PA 186
PA 187
PA 188
PA 189
PA 190
PA 191
PA 192
PA 193
PA 194
I-195 (future)
PA 196
PA 198
PA 199
PA 201
US 202 PA 202
PA 203
PA 204
PA 205
US 206
PA 207
PA 208
PA 210
PA 212
PA 213
PA 214
PA 215
PA 216
PA 217
PA 218
PA 221
PA 223
US 224 PA 224
PA 225
PA 226
PA 227
PA 228
PA 229
PA 230 US 230
PA 231
PA 232
PA 233
PA 234
PA 235
PA 236
PA 237
PA 238
PA 239
PA 240
PA 241
PA 242
PA 243
PA 244
PA 245
PA 246
PA 247
PA 248
PA 249
Current Former
PA 250
PA 251
PA 252
PA 253
PA 254
PA 255
PA 256
PA 257
PA 258
PA 259
PA 260
PA 261
PA 262
PA 263
PA 264
PA 266
PA 267
PA 268
PA 270
PA 271
PA 272
PA 274
I-276 PA 276
PA 277
PA 278
I-279
I-280; PA 280
PA 281
PA 282
I-283; PA 283
PA 284
PA 285
PA 286 (Truck)
PA 287
PA 288
PA 290
PA 291
PA 292
PA 293
PA 294
PA 295
PA 296
PA 299
PA 301
PA 302
PA 303
PA 304 (Truck)
PA 305
PA 307
PA 308
PA 310
PA 312
PA 313
PA 314
PA 315
PA 316
PA 317
PA 318
PA 319
PA 320
PA 321
PA 324
PA 325
PA 326
PA 327
PA 328
PA 329
PA 331
PA 332
PA 333
PA 334
PA 335
PA 336
PA 337
PA 338
PA 339
PA 340
PA 341 (Truck)
PA 342
PA 343
PA 344
PA 345
PA 346
PA 347
PA 348
PA 349
PA 350
PA 351
PA 352
PA 353
PA 354
PA 356
PA 358
PA 359
PA 360
PA 362
PA 363
PA 364
PA 366
PA 367
PA 368
PA 370
PA 371
PA 372
PA 374
PA 377
PA 378 I-378
I-380; PA 380 PA 380 Alternate
PA 381
PA 382
PA 383
PA 387
PA 388
PA 390
PA 391
PA 392
PA 393
PA 394
PA 399
PA 401
PA 402
PA 403
PA 404
PA 405
PA 407
PA 408
PA 409
PA 410
PA 412
PA 413
PA 414
PA 415
PA 416
PA 417
PA 418
PA 419
PA 420
PA 423
PA 424
PA 425
PA 426
PA 427
PA 428
PA 430
PA 432
PA 433
PA 434
PA 435
PA 436
PA 437
PA 438
PA 439
PA 441 (Truck)
PA 442
PA 443
PA 445
PA 446
PA 447
PA 449
PA 450
PA 451
PA 452
PA 453
PA 454
PA 456
PA 458
PA 462
PA 463
PA 464
PA 465
PA 466
PA 467
PA 468
PA 470
PA 471
PA 472
PA 474
PA 475
I-476 PA 476
PA 477
PA 478
I-479
I-480; PA 480
PA 481
PA 482
PA 483
PA 484
PA 487
PA 488
PA 490
PA 491
PA 492
Current Former
PA 501
PA 502
PA 503
PA 504
PA 505
PA 507
PA 512
PA 513
PA 514
PA 515
PA 516
PA 518
PA 519
PA 520
US 522
PA 523
PA 524
PA 527
PA 528
PA 529
PA 531
PA 532
PA 533
PA 534
PA 535
PA 536
PA 539
PA 541
PA 542
PA 543
PA 545
PA 546
PA 547
PA 549
PA 550
PA 551 Alternate
PA 552
PA 553
PA 554
PA 555
PA 562
PA 563
PA 564
PA 566
PA 568
PA 570
PA 572
I-576; PA 576
I-579
PA 580
PA 581
PA 582
PA 588
PA 590
PA 591
PA 592
PA 601
PA 602
PA 604
PA 607
PA 611 US 611
PA 612
PA 613
PA 615
PA 616
PA 618
US 622
PA 624
PA 625
PA 629
PA 632
PA 633
PA 639
PA 641 (Truck)
PA 642
PA 643
PA 645
PA 646
PA 647
PA 651
PA 652
PA 653 (Truck)
PA 654
PA 655
PA 660
PA 662
PA 663
PA 664
PA 666
PA 669
PA 670
PA 672
I-676
I-680; PA 680
PA 683
PA 690
PA 692
I-695
PA 696
PA 701
PA 702
PA 706
PA 707
PA 709
PA 711 (Truck) US 711
PA 712
PA 713
PA 715
PA 718
PA 722
PA 724
PA 729
PA 731
PA 732
PA 737
PA 739
PA 741
PA 742
PA 743
PA 746
PA 747
Current Former
PA 752
PA 756
PA 760
PA 763
PA 764 Alternate
PA 766
PA 770 (Truck)
PA 772
PA 780
PA 790
PA 791
PA 796
PA 802
PA 805
PA 808
PA 813
PA 819
PA 820
PA 821
PA 823
PA 824
PA 825
PA 826
PA 827
PA 828
PA 829
PA 830
PA 831
PA 832
PA 833
PA 834
PA 835
PA 836
PA 837
PA 838
PA 839
PA 840
PA 841
PA 842
PA 843
PA 844
PA 845
PA 846
PA 847
PA 848
PA 849
PA 850
PA 851 (Truck)
PA 852
PA 853
PA 854
PA 855
PA 856
PA 857
PA 858
PA 859
PA 860
PA 861
PA 862
PA 863
PA 864
PA 865
PA 866
PA 867
PA 868
PA 869
PA 871
PA 872
PA 873
PA 875
I-876; PA 876
PA 877
PA 879
PA 880
PA 881
PA 882
PA 883
PA 884
PA 885
PA 886
PA 888
PA 889
PA 890
PA 891
PA 892
PA 893
PA 894
PA 895 I-895
PA 896
PA 897
PA 898
PA 899
PA 900
PA 901
PA 902
PA 903
PA 904
PA 905
PA 906
PA 907
PA 908
PA 909
PA 910
PA 911
PA 913
PA 914
PA 915
PA 916
PA 917
PA 918
PA 919
PA 920
PA 921
PA 922
PA 923
PA 924
PA 925
PA 926
PA 927
PA 928
PA 929
PA 930
PA 931
PA 932
PA 933
PA 934
PA 935
PA 936
PA 937
PA 938
PA 940
PA 941
PA 942
PA 943
PA 944
PA 945
PA 946
PA 948
PA 949
PA 950
PA 951
PA 952
PA 953
PA 954
PA 955
PA 956
PA 957
PA 958
PA 959
PA 960
PA 961
PA 962
PA 963
PA 964
PA 965
PA 966
PA 967
PA 968
PA 969
PA 970
PA 971
PA 972
PA 973
PA 974
PA 975
PA 976
PA 977
PA 978
PA 979
PA 980
PA 981
PA 982
PA 983
PA 984
PA 985
PA 986
PA 987
PA 989
PA 990
PA 991
PA 992
PA 993
PA 994
PA 995
PA 996
PA 997 (Truck)
PA 998
PA 999

## References

1. ^
2. ^ a b
3. ^ "Penndot - Pennsylvania Stateroads 200901". Pennsylvania Department of Transportation. Retrieved 2010-01-19.
4. ^ For instance, the Lawrence County map PDF (2.17 MiB, FTP) indicates that Pennsylvania Route 551 north of Pulaski, near the north edge of the county is — except for the bridge over Buchanan Creek — locally maintained as Township Route 649. This is confirmed by the VideoLog. A 1990 county map PDF (5.97 MiB, FTP) shows that it was once state-maintained all the way as Legislative Route 649.
5. ^ U.S. 22 - The William Penn Highway
6. ^ These are all listed on the back of the 1930 state map PDF (5.75 MiB, FTP), though by then the original numbers were gone. This 1927 map shows the original numbers.