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PA 21(E-W)/PA 166(N-S) Duplex


21 166

Pennsylvania Routes 21 and 166 join for a mile near Masontown in Fayette County.


Adam Prince 10/02

Southbound on PA 166 at the northern split. PA 166 meets PA 21 here and beings a duplex through Lardin on the way to Masontown.

 


Adam Prince 10/02

Southbound on the four-lane, divided highway duplex. Only the section of PA 21 and PA 166 that are joined has been upgraded to a divided highway in this area.

 


Adam Prince 10/02

A mile to the south, PA 166 exits at a partial diamond interchange and directly serves the center of Masontown. PA 21 continues westward toward Waynesburg.

 

 

Local Names

East
21

McClellandtown Road

North
166

Route 166

Duplex
21
166

Roy E. Furman Highway
McClellandtown Road

West
21

Roy E. Furman Highway

South
166

Main Street

 

Terraserver Imagery

 

Former Designations

21
166

1946–

PA 21 was relocated to pass just north of Masontown, and PA 166 was extended northward over PA 21.

 

Adjacent Multiplexes

19
21

West to Waynesburg

 

 

 
166

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