Interstate 81 Stack Interchanges

April of 1994

I-81 at US 22/322/PA 230 in Harrisburg

I-81 at US 22/US 322/PA 230 in Harrisburg.  This is a symmetrical stack interchange.

Another view of I-81 at US 22/322/PA 230 in Harrisburg

Here's another view of the stack interchange from eastbound US 22/US 322 ramp to northbound I-81.  Image taken from December 21, 1993

Old stack interchange at I-81/I-84/I-380

The old "X" stack interchange at I-84/I-380 on I-81 north. This interchange has undergone a massive construction project, with the new US 6 freeway linking from the north.  The freeway today still incorporates the original "X" stack, but now has a series of ramps that are cut into the rock linking the new US 6 freeway.

Closer view of the old stack interchange at I-81/I-84/I-380

A closer view of the "X" stack interchange.  There is another "X" stack interchange just southeast of here where I-84/I-380 splits.

Interstate 81
Interstate 81 Pictures
Interstate 81 - Andy Field/Alex Nitzman

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Page updated January 10, 2010.
Content and graphics copyright Alex Nitzman. All rights reserved.
Page courtesy of Alex Nitzman who originally produced the page and took the pictures of the interchanges.