1. The ascent is particularly steep after passing northbound through the Great Bear snow shed . 2. Snow sheds for the Trans-Canada Highway were built later, including large ones in 1962.3. In 1910, a serious forest fire burned much of the remaining major bridges and snow sheds . 4. The new tunnel and electrification reduced the mainline by, eliminated of elevation and of snow sheds . 5. Snow sheds are a kind of artificial tunnel built to protect a railway from avalanches of snow.6. Denver & Salt Lake Railroad passenger train exiting a snow shed at the top of Rollins Pass, Colorado. 7. The I-90 snow shed was the last remaining snow shed along an Interstate highway when it was removed. 8. The I-90 snow shed was the last remaining snow shed along an Interstate highway when it was removed. 9. A number of snow sheds and earth dams are used to protect the Rogers Pass highway from avalanches. 10. I-90 used to have one of only a few snow sheds on the Interstate Highway System, at Snoqualmie Pass.