Neahkahnie Mountain Bridge

Photos 

Neahkahnie Mountain Bridge

Photo taken by Michael Goff in October 2010

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Map 

Street View 

Facts 

Overview

Girder bridge over Neahkahnie Mountain Chasm on US 101

Location

Tillamook County, Oregon

Status

Open to traffic

History

Built 1937

Builder

- Glenn S. Paxson (Engineer)

Design

The Chasm, or Neahkahnie Mountain, Bridge was completed in 1937. The bridge is a concrete girder bridge with arched outer facia walls. Designed by Glenn S. Paxson, its concrete masonry and railings stretches over Highway 101 near Cape Falcon. Located at mile post 40.71, the bridge’s railings extend nearly uninterrupted around Neahkahnie Mountain along one of the most beautiful sections of the Oregon Coast.
(ODOT Coastal Bridge Brochure - Spanning Oregon's Coast)

Dimensions

Length of largest span: 59.1 ft.
Total length: 102.4 ft.
Deck width: 29.9 ft.

Recognition

Eligible for the National Register of Historic Places

Also called

Chasm Bridge

Approximate latitude, longitude

+45.74306, -123.95750   (decimal degrees)
45°44'35" N, 123°57'27" W   (degrees°minutes'seconds")

Approximate UTM coordinates

10/425516/5065945 (zone/easting/northing)

USGS topographic map

Nehalem

Inventory numbers

OR 02723 (Oregon Dept. of Transportation structure number)
BH 43197 (Bridgehunter.com ID)

Inspection (as of 10/2010)

Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 41.8 (out of 100)

Average daily traffic (as of 2010)

3,700

Categories 

Update Log 

• October 28, 2010: New photos from Michael Goff
• April 26, 2010: New Street View added by Michael Goff
• August 10, 2009: Added by Michael Goff

Sources 

• Mike Goff - michael [dot] goff [at] hotmail [dot] com
• Historic Highway Bridges of Oregon - Dwight A. Smith, James B. Norman & Pieter T. Dykman, Oregon Historical Society Press, 1989

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