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

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Junction list:

• Lycoming County
• ET JCT PA 87
• Begin/End SR 0973
• I US 15
• JCT PA 287
• M PA 287(N-S)/PA 973(E-W), SR 0287
• JCT PA 287
• Begin/End SR 0973
• WT JCT PA 44
• Lycoming County

Links and Sources:

• PA 287/PA 973 Multiplex
• PA 973/Old US 15 Multiplex
• PA 973 Termini · Adam Prince's Highway Beginnings and Endings in Pennsylvania

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Junction list:

• Allegheny County
• NT I US 22/US 30
• Begin/End SR 0978
• Begin/End SR 0978
• ST JCT PA 50
• Allegheny County

Links and Sources:

• PA 978 Termini · Adam Prince's Highway Beginnings and Endings in Pennsylvania

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Junction list:

• Allegheny County
• NT I US 22
• Begin/End SR 0980
• Allegheny/Washington County Line
• JCT PA 50
• M PA 50(E-W)/PA 980(N-S), SR 0050
• JCT PA 50
• Begin/End SR 0980
• ST JCT PA 519
• Washington County

Links and Sources:

• PA 50/PA 980 Multiplex
• PA 980 Termini · Adam Prince's Highway Beginnings and Endings in Pennsylvania