PA 531-540 | PA 546 | PA 547 | PA 549 | PA 550 | PA 551-560

Abbreviations:
JCT = Junction
I = Interchange
M = Multiplex (click below on this abbreviation for a multiplex page)
NT, ST, ET, WT = Northern, Southern, Eastern, and Western Terminus (click below on one of these abbreviations for a route terminus page)
NS, SS, ES, WS = Northern, Southern, Eastern, and Western Split of multiplex

PA 546

Junction list:

• NT NY state line, Cattaraugus Co., NY/McKean Co., PA
• Begin/End SR 0546
• Begin/End SR 0546
• ST JCT PA 346
• McKean County

Links and Sources:

• PA 546 Termini · Adam Prince's Highway Beginnings and Endings in Pennsylvania

PA 547

Junction list:

• Susquehanna County
• ET JCT PA 492
• Begin/End SR 0547
• JCT PA 848 ST
• I I-81 Exit 217[65]
• Begin/End SR 0547
• WT JCT US 11
• Susquehanna County

Links and Sources:

• PA 547 Termini · Adam Prince's Highway Beginnings and Endings in Pennsylvania

PA 549

Junction list:

• Bradford County
• NT JCT PA 328
• Begin/End SR 0549
• Bradford/Tioga County Line
• Begin/End SR 0549
• ST JCT US 6
• Tioga County

Links and Sources:

• PA 549 Termini · Adam Prince's Highway Beginnings and Endings in Pennsylvania

PA 550

Junction list:

• Centre County
• NT JCT PA 64
• Begin/End SR 0550
• I US 220/PA 26/Future I-99 Exit 83
• JCT PA 144
• M PA 144(S-N)/PA 550(N-S), SR 0144
• JCT PA 144
• JCT PA 150
• M PA 150(N-S)/PA 550(N-S), SR 0150
• JCT PA 150
• JCT US 220/US 322
• Centre/Huntingdon County Line
• JCT Truck PA 45/PA 350
• M ES Truck PA 45(E-W)/PA 550(N-S)
• Huntingdon/Blair County Line
• M WS Truck PA 45(E-W)/PA 550(N-S)
• Begin/End SR 0550
• ST JCT Truck PA 45/PA 453
• Blair County

Links and Sources:

• Truck PA 45/PA 550 Multiplex
• PA 144/PA 550 Multiplex
• PA 150/PA 550 Multiplex
• I-99/US 220/US 322/PA 26 Construction Photos
• PA 550 Termini · Adam Prince's Highway Beginnings and Endings in Pennsylvania
• I-99/US 220/PA 26 Relocation Construction · PennDOT District 2