Oneonta Tunnel - Columbia River Highway
Posted by: Groundspeak Charter Member BruceS
N 45° 35.360 W 122° 04.450
10T E 572217 N 5048838
Historic highway tunnel, now bypassed, has been restored as a pedestrian tunnel after being filled rubble for more than a half a century.
Waymark Code: WM5YME
Location: Oregon, United States
Date Posted: 03/02/2009
Published By:Groundspeak Regular Member silverquill
Views: 17
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From Historic District nomination form: 

"CS 16. Structure: Oneonta Tunnel HAER No. OR-36-L

Location: HMP 34.3 Date: 1914

Designer: S. C. Lancaster

Builder: S. P. White and Co., Vancouver, WA

Owner: Oregon Department of Transportation

This tunnel consists of a 125-foot straight bore through a 200-foot-tall outcropping of Columbia River basalt. The 20-foot bore has a vertical clearance of just over 19 feet. Concrete was injected into the basalt prior to cutting the tunnel to prevent the outcropping from crumbling onto a nearby railroad mainline. The tunnel was lined with timber sets and lagging. It was bypassed and filled with rubble in 1948."

Beginning in August 19, 2006 the tunnel was daylighted again with the removal of the rubble.  The tunnel has been restored allowing pedestrian access.

Name of Historic District (as listed on the NRHP): Columbia River Highway Historic District

Link to nationalregisterofhistoricplaces.com page with the Historic District: [Web Link]

Address:
Mile 34.3 Columbia River Highway

How did you determine the building to be a contributing structure?: Narrative found on the internet (Link provided below)

Optional link to narrative or database: [Web Link]

NRHP Historic District Waymark (Optional): Not listed
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Recent Visits/Logs:
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