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Interchange Browser

Aerial Images of Pennsylvania and Maryland's Expressway Crossings

Including select highways from adjoining states

Updates

Right: The triple trumpet interchange connecting I-99/US 220, US 22, and PA 764 on the south side of Altoona, Pennsylvania. (Terraserver-USA/United States Geological Survey)

 

The Interchange Browser provides a web interface to terraserver-usa.com's data archive of aerial imagery from the United States Geological Survey. The imagery depicts vasts regions of the United States with a spatial resolution sufficient for viewing the nation's roads and freeways and their interchange connections.

Most imagery in the archive and in the Interchange Browser originates from the period 1993–1999, while select urban areas have color coverage from 2001–2002. While most interchanges have not changed since the aerial photographs were taken, others have been reconfigured, changing from one type of interchange to another. Additionally, new interchanges and freeways built in more recent years may not appear in the archive and are left without a link in the Interchange Browser.

 

Select a route below to browse its interchanges:

Delaware

 

 95 295 495          

District of Columbia

 

 29              

Maryland
  68 70 81 83 95 97 195 270
  295 370 395 495 595 695 795 895
  4 13 15 29 40 219 220 340
  522 10 32 100 295      

Pennsylvania
  70 76 78 79 80 81 83 83
  84 86 90 95 99 156 180 276
  279 283 376 380 476 579 676  
  4 15 22 40 220 522    
  28 33 43 60 BUSINESS
60		 66 147 283
  378 581          

 

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