List of tunnels documented by the Historic American Engineering Record in California
# List of tunnels documented by the Historic American Engineering Record in California

This is a list of tunnels documented by the Historic American Engineering Record in the US state of California.

## Tunnels

| Survey No. | Name (as assigned by HAER) | Status | Built | Documented | Carries | Crosses | Location | County | Coordinates |
| - | - | - | - | - | - | - | - | - | - |
| CA-30 CA-199 | Central Pacific Railroad, Clipper Gap Tunnel Central Pacific Transcontinental Railroad, Tunnel 'O' | Abandoned | 1873 | 1984 1997 | Union Pacific Railroad | | Clipper Gap | Placer | 38°58′47″N 120°59′56″W﻿ / ﻿38.97972°N 120.99889°W﻿ / 38.97972; -120.99889﻿ (Central Pacific Railroad, Clipper Gap Tunnel) |
| CA-86 | Big Oak Flat Road Tunnel No. 1 | Extant | 1937 | 1991 | New Big Oak Flat Road | Mountain spur | Yosemite Village | Mariposa | 37°43′31″N 119°42′15″W﻿ / ﻿37.72528°N 119.70417°W﻿ / 37.72528; -119.70417﻿ (Big Oak Flat Road Tunnel No. 1) |
| CA-87 | Big Oak Flat Road Tunnel No. 2 | Extant | 1937 | 1991 | New Big Oak Flat Road | Mountain spur | Yosemite Village | Mariposa | 37°43′24″N 119°41′54″W﻿ / ﻿37.72333°N 119.69833°W﻿ / 37.72333; -119.69833﻿ (Big Oak Flat Road Tunnel No. 2) |
| CA-88 | Big Oak Flat Road Tunnel No. 3 | Extant | 1938 | 1991 | New Big Oak Flat Road | Mountain spur | Yosemite Village | Mariposa | 37°43′03″N 119°43′23″W﻿ / ﻿37.71750°N 119.72306°W﻿ / 37.71750; -119.72306﻿ (Big Oak Flat Road Tunnel No. 3) |
| CA-105 | Wawona Tunnel | Extant | 1932 | 1991 | SR 41 (Wawona Road) | Turtleback Dome | Yosemite Village | Mariposa | 37°42′57″N 119°41′09″W﻿ / ﻿37.71583°N 119.68583°W﻿ / 37.71583; -119.68583﻿ (Wawona Tunnel) |
| CA-130-E | Santa Ana River Hydroelectric System, Flume and Tunnel below Fish Screen | | 1898 | 1991 | | | Redlands | San Bernardino | |
| CA-130-G | Santa Ana River Hydroelectric System, Flumes and Tunnels below Sandbox | | 1898 | 1991 | | | Redlands | San Bernardino | |
| CA-130-R | Santa Ana River Hydroelectric System, Abandoned Tunnel | Abandoned | 1898 | 1991 | Santa Ana Canal | | Redlands | San Bernardino | |
| CA-139 | Forts Baker–Barry Tunnel | Extant | 1918 | 1993 | Bunker Road | Lime Point Ridge | Sausalito | Marin | 37°50′27″N 122°29′26″W﻿ / ﻿37.84083°N 122.49056°W﻿ / 37.84083; -122.49056﻿ (Forts Baker–Barry Tunnel) |
| CA-153-A | Salinas River Project, Cuesta Tunnel | Extant | 1942 | 1994 | Aqueduct | Santa Lucia Range | San Luis Obispo | San Luis Obispo | 35°21′23″N 120°38′22″W﻿ / ﻿35.35639°N 120.63944°W﻿ / 35.35639; -120.63944﻿ (Salinas River Project, Cuesta Tunnel) |
| CA-162 | Mile Rock Tunnel | Extant | 1915 | 1994 | Storm drain | 48th Avenue | San Francisco | San Francisco | 37°46′24″N 122°30′32″W﻿ / ﻿37.77333°N 122.50889°W﻿ / 37.77333; -122.50889﻿ (Mile Rock Tunnel) |
| CA-197 | Central Pacific Transcontinental Railroad, Tunnel No. 18 | Extant | 1909 | 1997 | Union Pacific Railroad | | Newcastle | Placer | 38°52′33″N 121°07′42″W﻿ / ﻿38.87583°N 121.12833°W﻿ / 38.87583; -121.12833﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 18) |
| CA-198 | Central Pacific Transcontinental Railroad, Tunnel No. 23 | Extant | 1909 | 1997 | Union Pacific Railroad | | Applegate | Placer | 38°58′46″N 120°59′57″W﻿ / ﻿38.97944°N 120.99917°W﻿ / 38.97944; -120.99917﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 23) |
| CA-200 | Central Pacific Transcontinental Railroad, Tunnel No. 24 | Extant | 1910 | 1997 | Union Pacific Railroad | | Applegate | Placer | 38°58′57″N 120°59′53″W﻿ / ﻿38.98250°N 120.99806°W﻿ / 38.98250; -120.99806﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 24) |
| CA-201 | Central Pacific Transcontinental Railroad, Tunnel No. 25 | Extant | 1910 | 1997 | Union Pacific Railroad | | Applegate | Placer | 38°59′05″N 120°59′47″W﻿ / ﻿38.98472°N 120.99639°W﻿ / 38.98472; -120.99639﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 25) |
| CA-202 | Central Pacific Transcontinental Railroad, Tunnel No. 26 | Extant | 1909 | 1997 | Union Pacific Railroad | | Applegate | Placer | 38°59′13″N 120°59′38″W﻿ / ﻿38.98694°N 120.99389°W﻿ / 38.98694; -120.99389﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 26) |
| CA-203 | Central Pacific Transcontinental Railroad, Tunnel No. 27 | Extant | 1910 | 1997 | Union Pacific Railroad | | Applegate | Placer | 38°59′32″N 120°59′17″W﻿ / ﻿38.99222°N 120.98806°W﻿ / 38.99222; -120.98806﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 27) |
| CA-204 | Central Pacific Transcontinental Railroad, Tunnel No. 28 | Extant | 1910 | 1997 | Union Pacific Railroad | Hotchkiss Hill | Applegate | Placer | 39°00′16″N 120°58′48″W﻿ / ﻿39.00444°N 120.98000°W﻿ / 39.00444; -120.98000﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 28) |
| CA-205 | Central Pacific Transcontinental Railroad, Tunnel No. 29 | Extant | 1909 | 1997 | Union Pacific Railroad | | Applegate | Placer | 39°01′15″N 120°58′22″W﻿ / ﻿39.02083°N 120.97278°W﻿ / 39.02083; -120.97278﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 29) |
| CA-206 | Central Pacific Transcontinental Railroad, Tunnel No. 34 | Extant | 1913 | 1997 | Union Pacific Railroad | Cape Horn | Colfax | Placer | 39°06′45″N 120°55′48″W﻿ / ﻿39.11250°N 120.93000°W﻿ / 39.11250; -120.93000﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 34) |
| CA-207 | Central Pacific Transcontinental Railroad, Tunnel No. 1 | Extant | 1868 | 1997 | Union Pacific Railroad | | Blue Canyon | Placer | 39°14′42″N 120°43′23″W﻿ / ﻿39.24500°N 120.72306°W﻿ / 39.24500; -120.72306﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 1) |
| CA-208 | Central Pacific Transcontinental Railroad, Tunnel No. 35 | Extant | 1924 | 1997 | Union Pacific Railroad | | Yuba Pass | Nevada | 39°19′24″N 120°35′34″W﻿ / ﻿39.32333°N 120.59278°W﻿ / 39.32333; -120.59278﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 35) |
| CA-209 | Central Pacific Transcontinental Railroad, Tunnel No. 36 | Extant | 1924 | 1997 | Union Pacific Railroad | | Yuba Pass | Nevada | 39°19′35″N 120°35′19″W﻿ / ﻿39.32639°N 120.58861°W﻿ / 39.32639; -120.58861﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 36) |
| CA-210 | Central Pacific Transcontinental Railroad, Tunnel No. 37 | Extant | 1925 | 1997 | Union Pacific Railroad | | Yuba Pass | Nevada | 39°19′26″N 120°34′27″W﻿ / ﻿39.32389°N 120.57417°W﻿ / 39.32389; -120.57417﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 37) |
| CA-211 | Central Pacific Transcontinental Railroad, Tunnel No. 38 | Extant | 1924 | 1997 | Union Pacific Railroad | | Cisco | Placer | 39°18′01″N 120°32′27″W﻿ / ﻿39.30028°N 120.54083°W﻿ / 39.30028; -120.54083﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 38) |
| CA-212 | Central Pacific Transcontinental Railroad, Tunnel No. 3 | Extant | 1868 | 1997 | Union Pacific Railroad | | Cisco | Placer | 39°18′04″N 120°32′22″W﻿ / ﻿39.30111°N 120.53944°W﻿ / 39.30111; -120.53944﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 3) |
| CA-213 | Central Pacific Transcontinental Railroad, Tunnel No. 39 | Extant | 1924 | 1997 | Union Pacific Railroad | | Cisco | Placer | 39°18′00″N 120°32′05″W﻿ / ﻿39.30000°N 120.53472°W﻿ / 39.30000; -120.53472﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 39) |
| CA-214 | Central Pacific Transcontinental Railroad, Tunnel No. 4 | Extant | 1868 | 1997 | Union Pacific Railroad | | Cisco | Placer | 39°18′01″N 120°32′04″W﻿ / ﻿39.30028°N 120.53444°W﻿ / 39.30028; -120.53444﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 4) |
| CA-215 | Central Pacific Transcontinental Railroad, Tunnel No. 41 | Extant | 1925 | 1997 | Union Pacific Railroad | Mount Judah | Donner | Placer | 39°18′18″N 120°19′03″W﻿ / ﻿39.30500°N 120.31750°W﻿ / 39.30500; -120.31750﻿ (Central Pacific Transcontinental Railroad, Tunnel No. 41) |
| CA-218 | Southern Pacific Railroad Natron Cutoff, Tunnel No. 17 | Extant | 1909 | 1997 | Southern Pacific Railroad, Cascade Subdivision | Dorris Hill | Dorris | Siskiyou | 41°58′18″N 121°54′42″W﻿ / ﻿41.97167°N 121.91167°W﻿ / 41.97167; -121.91167﻿ (Southern Pacific Railroad Natron Cutoff, Tunnel No. 17) |
| CA-219 | Southern Pacific Railroad Natron Cutoff, Tunnel No. 18 | Extant | 1909 | 1997 | Southern Pacific Railroad, Cascade Subdivision | Dorris Hill | Dorris | Siskiyou | 41°59′46″N 121°54′42″W﻿ / ﻿41.99611°N 121.91167°W﻿ / 41.99611; -121.91167﻿ (Southern Pacific Railroad Natron Cutoff, Tunnel No. 18) |
| CA-265-G | Figueroa Street Tunnels | Extant | 1931 | 1999 | SR 110 (Arroyo Seco Parkway) northbound | Elysian Park | Los Angeles | Los Angeles | 34°04′23″N 118°14′02″W﻿ / ﻿34.07306°N 118.23389°W﻿ / 34.07306; -118.23389﻿ (Figueroa Street Tunnels) |
| CA-298-AG | Los Angeles Aqueduct, Tunnel Interior | Extant | 1913 | 2001 | Los Angeles Aqueduct | | Los Angeles | Los Angeles | |
| CA-315-T | Douglas Aircraft Company Long Beach Plant, Pedestrian Tunnels | Abandoned | 1941 | 2002 | Pedestrian ways | SR 19 (Lakewood Boulevard) | Long Beach | Los Angeles | 33°49′38″N 118°08′31″W﻿ / ﻿33.82722°N 118.14194°W﻿ / 33.82722; -118.14194﻿ (Douglas Aircraft Company Long Beach Plant, Pedestrian Tunnels) |
| CA-2259-D | Burlington Northern Santa Fe Railroad, Cajon Subdivision, Tunnel No. 1 | Daylighted | 1913 | 2007 | BNSF Railway, Cajon Subdivision | Cajon Pass | Devore | San Bernardino | 34°20′01″N 117°28′05″W﻿ / ﻿34.33361°N 117.46806°W﻿ / 34.33361; -117.46806﻿ (Burlington Northern Santa Fe Railroad, Cajon Subdivision, Tunnel No. 1) |
| CA-2259-E | Burlington Northern Santa Fe Railroad, Cajon Subdivision, Tunnel No. 2 | Daylighted | 1923 | 2007 | BNSF Railway, Cajon Subdivision | Cajon Pass | Devore | San Bernardino | 34°19′56″N 117°28′24″W﻿ / ﻿34.33222°N 117.47333°W﻿ / 34.33222; -117.47333﻿ (Burlington Northern Santa Fe Railroad, Cajon Subdivision, Tunnel No. 2) |
