Rating:
No votes cast

UP - Tunnel 24

Photos 

West Portal Of Tunnel 24, Contextual View To North, 135mm Lens

Photo taken by Ed Anderson for the Historic American Engineering Record

View photos at Library of Congress

BH Photo #299165

Map 

Description 

The Central Pacific First Transcontinental Railroad is a segment of the western half of the first transcontinental railroad, built from Sacramento, California to Promontory Summit, Utah between 1863 and 1869, where it joined the Union Pacific Railroad which had built west from Omaha. For the purpose of the current project, the first transcontinental railroad was found likely to be eligible for the National Register of Historic Places at the national level of significance under Criterion A for its significance in transportation history, in uniting the East and the West, and in the development of the West. The railroad's period of significance is 1869 to 1945, from the line's completion in 1869, through the years of its role in the settlement and development of the West, to the conclusion of the railroad's achievements in World War II. Tunnel 24 is a contributive element of this property.

Tunnel 24 is a 292-foot, single track railroad tunnel, with granite ashlar portal faces and wingwalls. As-built, the tunnel was concrete-lined for the first fifty feet in from each portal, with the remainder lined in redwood timber; the railroad has subsequently covered the timbering with shotcrete. The tunnel is on a three degree, fifty-two minute right-hand curve, and carries the tracks of the Union Pacific Railroad's (formerly Southern Pacific) Donner Pass line.

-- Historic American Engineering Record

Facts 

Overview
Tunnel on Union Pacific Railroad
Location
Placer County, California
Status
Open to traffic
History
Build 1910
Railroads
- Central Pacific Railway (CPRR)
- Southern Pacific Railroad (SP)
- Union Pacific Railroad (UP)
Design
Tunnel
Dimensions
Total length: 292.0 ft.
Approximate latitude, longitude
+38.98488, -120.99897   (decimal degrees)
38°59'06" N, 120°59'56" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/673316/4317003 (zone/easting/northing)
Quadrangle map:
Greenwood
Inventory number
BH 63431 (Bridgehunter.com ID)

Update Log 

  • October 9, 2014: Added by Dave King

Sources 

  • Dave King - DKinghawkfan [at] hotmail [dot] com
  • HAER CA-200 - Central Pacific Transcontinental Railroad, Tunnel No. 24, Milepost 132.9, Applegate, Placer County, CA