U. S. nEOLOGICAL SURVEY 



BULLETIN 707 PLATE XXXVIII 



IIANGIiNG BRIDGE, ROYAL GORGE. 



The Hanging Bridge, in the narrowest part of the canyon, is a striking feature. When the road 

 was built there was not room at this point for both river and railroad side by side, so a bridge 

 was necessary. The easiest way to construct such a bridge was to use the two walls of the 

 canyon as abutments and to swing the bridge froni trusses, as shown in this view. The 

 joints in the granite are nearly vertical, and consequently the walls have little backward 

 slope. Photograph furnished by the Denver & Rio Grande Western Railroad. 



