The Kuskulana Bridge was built in the dead of winter, with temps. dipping down to -50 and winds as high as 60 mph.
The Gilahina Trestle was 880 feet long and built in only 8 days!
Here are 2 bridges that you can see when driving to Kennecott. These were both part of the Copper River and Northwestern Railway. I actually created a program on the CRNW and have been giving it to some of the visitors that come in!