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Location DB > United States > Washington > Snoqualmie Pass > Snoqualmie Pass Train Tunnel
Snoqualmie Pass Train Tunnel
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 Database Info
created by minable on 4/23/2004 4:27 AM
last modified by Emperor Wang on 7/23/2021 11:31 PM
Publically Viewable Publically Viewable
This location has been labeled by its creator as Public, and therefore can be viewed by anyone.
This 2.3mi tunnel opened to public access in 2011 after a $700,000 renovation. Part of the rail-to-trails program, known officially as the Palouse to Cascades State Park Trail (formerly known as the John Wayne Pioneer Trail and commonly called the Iron Horse Trail). GPS coordinates point to the trailhead with parking, bathrooms, and running water. Requires a rec pass, a self-pay station is at the trailhead.

Iron Horse State Park is a 1,612-acre park that was once part of the path of the Chicago-Milwaukee-St. Paul-Pacific Railroad. More than 100 miles of trail extends from Cedar Falls to the Columbia River. High trestles provide spectacular views of the valley below.
 Basic Information
Type: Tunnel
Status: Repurposed
Accessibility: Easy
Recommendation: worth the trip
 Physical Information
Iron Horse State Park
Snoqualmie Pass, Washington
United States
Owner: Washington State Parks
  • See a map of this location
  •  Hazards
     Interesting Features
    Some old train equipment.
     Security Measures
  • None - State Park.
  •  Historical Dates
    Built: 1912
    Closed: 1980
     Required Equipment
  • flashlight
  • long pants / sleeves
  • it's very cool in the tunnel
  •  Recommended Equipment
    Camera, bike or hiking shoes
    The tunnel was constructed from 1912–1914 by the Chicago, Milwaukee, St. Paul and Pacific Railroad ("The Milwaukee Road") as part of its line from Chicago to Seattle, completed in 1909. It replaced a temporary surface line over Snoqualmie Pass at 3,020 feet (920 m); this grade from Hyak to Rockdale later became U.S. Route 10, now the eastbound lanes of I-90. The tunnel is aligned east-west and electrification in 1917 eliminated smoke dissipation issues.

    In 1980, the Milwaukee Road received approval from the Interstate Commerce Commission to abandon its lines west of eastern Montana. On March 15, 1980, the final Milwaukee Road train passed through the tunnel. Later, the State of Washington acquired the right-of-way for recreational use.

    Today the tunnel is part of the Iron Horse State Park rails-to-trails project. It is usually closed between November 1 through early May due to ice formations inside the tunnel. On July 5, 2011 the tunnel re-opened after 11 months of renovations. The $700,000 renovation added a four-inch (10 cm) layer of concrete to the walls and ceiling, a reinforced structure, and a new and improved walking surface of crushed rock.
     Media Coverage
     Future Plans


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     Photo Galleries
    Click to view gallery
    Day Trip
    Fri, Apr 23rd, 2004
    posted by minable
    10 pictures
    Click to view gallery
    dezertdogs run
    Fri, Aug 11th, 2006
    posted by dezertdog
    13 pictures

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     Web Links



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     Moderator Rating
    The moderator rating is a neutral rating of the content quality, photography, and coolness of this location.

    Category Rating
    Photography 6 / 10
    Coolness 7 / 10
    Content Quality 6 / 10
    This location's validation is current. It was last validated by Emperor Wang on 7/23/2021 11:31 PM.

     Latest Changes
  • on Jul 23 21 at 23:31, Emperor Wang validated this location
  • on Jul 23 21 at 23:31, Emperor Wang changed the following: Required Equipment
  • on Jul 23 21 at 23:30, Emperor Wang made this location public
  • on Jul 23 21 at 23:29, Emperor Wang changed the following: Description
  • on Jul 23 21 at 23:28, Emperor Wang changed the following: Notes for Mods, Description, Web Links
  • on Jul 23 21 at 13:33, fr00tCake changed the following: History
  • on Jul 23 21 at 13:32, fr00tCake changed the following: Latitude, Longitude, Co-ordinate Accuracy, History, Year Built, Status, Hazards, Recommended Equipment, Media Coverage, Future Plans, Description, Web Links
  • on Aug 15 06 at 3:23, Emperor Wang validated this location
  • on Aug 11 06 at 8:24, dezertdog updated gallery dezertdogs run
  • on Aug 11 06 at 8:18, dezertdog added some pictures to a gallery
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