The Moffat Tunnel, a 6.2-mile railroad and water tunnel through the Continental Divide in Grand County, Colorado, was built from 1923-1928 to create a shorter, safer route from Denver to the West, replacing the dangerous Rollins Pass (Moffat Road) and significantly cutting train travel time from hours to minutes. Named for railroad pioneer David Moffat, it also carries water to Denver, opening up Grand County and providing vital links for both freight and passenger trains like the California Zephyr.
Key Milestones & Facts:
Inspiration:
David Moffat envisioned a direct rail line from Denver through the
Rockies to Utah and the Pacific.
Construction: Approved by voters in
1922, construction began in 1923 and finished in 1928, costing lives and
millions of dollars.
Engineering Feat: A parallel
"pioneer" tunnel was used to facilitate digging, with President Calvin
Coolidge symbolically holing through the pilot tunnel in 1927.
Impact
on Travel: Cut the Denver-to-Salt Lake City rail distance and
drastically reduced travel time over the mountains, making the old
Moffat Road route obsolete for through traffic.
Water
Delivery: A separate water tunnel delivers water from the
Fraser and Williams Fork Rivers to Denver, making it the first time
water came to the city from the west slope.
Legacy:
Remains a crucial part of the Union Pacific Railroad (formerly Denver &
Rio Grande Western) and supports Amtrak's California Zephyr. The Moffat
Road itself became a historic recreational area.
Significance for Grand County:
Opened up Grand County to
reliable, year-round access, connecting it to the outside world.
Created a vital transportation artery, vital for the region's
development and connectivity.
In essence, the Moffat Tunnel was a
monumental engineering achievement that transformed transcontinental
rail travel and brought essential water to Denver, deeply impacting the
history and development of Grand County

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Coordinator - Rebecca Maloney
State Coordinator: Rebecca Maloney
Asst. State Coordinator: Betty Baker - M.D. Monk - Norma Hass
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