There are 2,710 bridges in this category · Only showing 1,888 bridges with photos
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California

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Cal Trans historic metal bridge survey: https://dot.ca.gov/-/media/dot-media/programs/environmental-...

Mission Road Arroyo Rosa de Castilla Bridge (Los Angeles County, California)
Built befor 1862
Lost Bridge over Arroyo Rosa de Castilla on Mission Road / Alhambra Road
Stream converted to storm drain

Mojave River Bridge (San Bernardino County, California)
Built ca. 1888; Converted to road ca. 1907; Replaced 1941 and relocated to Central America
Pratt through truss bridge over Mojave River on Dagget-Yermo Road
Replaced by a new bridge, relocated to Central America

Mokelumne River Bridge (San Joaquin County, California)
Built 1942; rehabilitated 1978
Swing bridge over Mokelumne River on CA 12
Open to traffic

Mono Hot Springs Bridge (Fresno County, California)
Bailey pony truss bridge over South Fork San Joaquin River on Edison Lake Road
Open to traffic

Monterey Drive Bridge (Sonoma County, California)
Closed-spandrel arch bridge over Matanzas Creek on Monterey Drive
Open to traffic

Montgomery St Bridge (Butte County, California)
Built 1939
Steel stringer bridge over UP Railroad on Montgomery Street
Open to traffic

Montgomery Woods Bridge (Mendocino County, California)
Built 1971
Steel stringer bridge over South Fork Big River on Orr Springs Road
Open to traffic

Moody Creek Bridge (Shasta County, California)
Built 1918
Concrete tee beam bridge over Moody Creek on Cascade Blvd
Open to traffic

Mormon Island Bridge (Sacramento County, California)
Built 1908; Inundated ca. 1955
Parker through truss bridge over South Fork American River on Road
Inundated

Morrison-Bryan Road Bridge (Tehama County, California)
Built 1910
Lost Warren pony truss bridge over Burris Creek on Morrison-Bryan Road
Removed but not replaced

Morrow Island Bridge (Solano County, California)
Built ?
Steel stringer bridge over Goodyear Slough on Morrow Lane
Open to traffic

Moscow Road Viaduct (Sonoma County, California)
Built 1956
Concrete stringer bridge across hillside on Moscow Road
Open to traffic

Mosquito Road Bridge (El Dorado County, California)
Built 1939
Suspension bridge over South Fork American River on Mosquito Road
Open to traffic

Mossdale Bridge (1917) (San Joaquin County, California)
Built 1917; Replaced 1926
Lost Pratt through truss bridge over San Joaquin River on Road
Replaced by a new bridge

Mossdale Bridge (1949) (San Joaquin County, California)
Built 1949;
Warren through truss bascule bridge over San Joaquin River
Open to traffic

Mount Baldy Tunnel #2 (Los Angeles County, California)
Built 1954
Tunnel under hillside on Mount Baldy Road
Open to traffic

Mount Wilson Toll Road Bridge (Los Angeles County, California)
Built by The Pasadena and Mount Wilson Toll Road Company 1891, Replaced by the Nat'l Forrest Service, Date unknown
Concrete stringer bridge over Eaton Canyon Wash on Mt. Wilson Toll Road in Angeles National Forrest
Closed to all traffic

Mountain Hawk Way Bridge (Sonoma County, California)
Built 1995
Closed spandrel Concrete arch bridge over Sky Hawk Creek on Mountain Hawk Way in Santa Rosa
Open to traffic

Mountain House Road Bridge (Sierra County, California)
Built 1936; rehabilitated 1999
Warren Pony truss bridge over North Fork Yuba River on Mountain House Road
Open to traffic

Mountain Street Bridge (Los Angeles County, California)
1936
Concrete beam bridge over Verdugo Wash on Mountain St. in Glendale, Los Angeles County, California
Open to Traffic

Mt Murphy Road Bridge (El Dorado County, California)
Through girder bridge built 1915, 2 center spans destroyed by flooding and truss installed 1931
Through truss bridge over South Fork American River on Mt Murphy Road
Open to traffic

Mt Vernon Avenue Bridge (San Bernardino County, California)
Built 1934
Steel stringer bridge over BNSF RR, Amtrak, UP RR,W 3rd St on Mt Vernon Avenue
Open to traffic but with temporary supports on the south end

Mt. Rubidoux Drive Bridge (Riverside County, California)
Built 1931
Stone arch bridge over Buena Vista Avenue on Mt. Rubidoux Drive in Riverside
Open to traffic

Mueller Tunnel (Los Angeles County, California)
Built 1942
Tunnel under hillside on Mount Lowe Road
Open to pedestrians only

Mulholland Drive Viaduct (Los Angeles County, California)
Built 1940
Concrete tee beam bridge over Hollywood Freeway (US 101) on Mulholland Drive in Los Angeles
Open to traffic

Mullholland Dam Bridge (Los Angeles County, California)
Built 1924
Concrete rigid frame bridge over Hollywood Reservoir on former Mulholland Drive
Open to pedestrians only

MUNI - Sunset Tunnel (San Francisco County, California)
Built 1928
Tunnel under Buena Vista Park on SF Muni
Open to traffic

MUNI - Twin Peaks Tunnel (San Francisco County, California)
Built 1918
Tunnel on San Francisco Municipal Railway
Open to traffic

Myrtle Creek Bridge (Del Norte County, California)
Built 1984
Concrete arch bridge over Myrtle Creek on US 199
Open to traffic

Myrtledale Road Bridge (Napa County, California)
Built 1930
Concrete arch bridge over Napa River on Myrtledale Road in Calistoga
Open to traffic

Nacimiento Lake Drive Bridge (Monterey County, California)
Built 1921
Pratt Through truss bridge over San Antonio River on Nacimiento Lake Drive
Open to traffic

Napa Creek Bridge (Napa County, California)
Built 1920; replaced 2006
Lost stone arch bridge over Napa Creek on First Street in Napa
Replaced by new bridge 2006

Napa Creek Bridge (Napa County, California)
Built 1920
Stone arch bridge over Napa Creek on Pearl Street in Napa
Open to traffic

Napa River Bridge (Napa County, California)
Built 1949; rehabilitated 1977, replaced 2005
Vertical lift bridge over Napa River on CA 121 in Napa
Replaced by new "Maxwell Bridge", 2005

Nathanson Creek Bridge (Sonoma County, California)
Built 1910; rehabilitated 1990
Wooden bridge over Nathanson Creek on Chase Street in Sonoma
Open to traffic

Navarro River Bridge (Mendocino County, California)
Built 1949
Deck plate girder bridge over Navarro River on State Route 1
Open to traffic

Navy Drive Bridge (San Joaquin County, California)
Built 1941, replaced 2017
Swing bridge over San Joaquin River on Navy Drive in Stockton
Replaced by a new bridge

NCNG - Bear River Viaduct (Nevada County, California)
Built 1908 to replace wooden trestle line abandoned 1940; exploded in 1960 to build highway
Lost Deck truss bridge over Bear River on Nevada County Narrow Gauge RR
Removed but not replaced

NCRy - Arroyo de la Laguna Bridge (1899) (Alameda County, California)
Built in 1899 as a replacement of original covered Howe truss, still has original stone abutments and piers #1 and #2, and on original ROW of the first transcontinental railroad line. Dec 2018 - 6" settlement corrected.
Pony/through plate girder bridge over Arroyo de la Laguna on Southern Pacific/Niles Canyon Railway
Open to traffic

NCRy - Dresser Bridge (1906) (Alameda County, California)
Warren through truss bridge over Alameda Creek and Hwy 84 on Niles Canyon Railway
Open to traffic

NCRy - Farwell Bridge (1896) (Alameda County, California)
Built 1896, replacing the original single-span covered wooden Howe Truss.
Pratt through truss bridge over Alameda Creek and CA-84 on Niles Canyon Railway
Open to traffic

Neeley Road Bridge (Sonoma County, California)
Built 1930
Wooden bridge over SIDEHILL VIADUCT #1 on Neeley Road
Open to traffic

Nelson Bar Covered Bridge 05-04-06x (Butte County, California)
Destroyed by flooding March 30, 1903; replaced by steel truss bridge. Site inudated by Lake Oroville.
Lost Bridge over West Branch Feather River
Destroyed by flooding

Nelson Bar Steel Bridge (Butte County, California)
Through truss bridge on Nelson Bar Rd over West Branch Feather River
Removed but not replaced

Nelson Creek Bridge (Plumas County, California)
Built 1890
Pratt through truss bridge over Nelson Creek on Old Quincy La Porte Road
Open to pedestrians

Nelson Street Bridge (Plumas County, California)
Built 1941
Pony truss bridge over Indian Creek on Nelson Street in Taylorsville
Open to traffic

NER - American River Bridge (1907) (Sacramento County, California)
Built 1906; South span collapsed 1913
Lost Pratt through truss bridge over American River on Northern Electric Railway
Collapsed

NER - Feather River Bridge (Pre-1923) (Butte County, California)
Lost Howe through truss bridge over Feather River on Northern Electric Railway
Replaced by a new bridge

Neuenschwander Road Bridge (Napa County, California)
Built 1895
Closed-spandrel arch bridge over Huichica Creek on Neuenschwander Road
Open to traffic

New Creek Bridge (Tehama County, California)
Built 1935
Steel stringer bridge over New Creek on Cone Grove Road
Unknown status

New Hope Landing Bridge (San Joaquin County, California)
Replaced 1960
Lost Pratt through truss bridge over South Fork Mokelumne River on Walnut Grove Road
No longer exists

New Salmon Falls Bridge (El Dorado County, California)
Built 1953
Through truss bridge over South Fork American River on Salmon Falls Road
Open to traffic

Newcastle Tunnel (Placer County, California)
This US Highway 40 tunnel opened in 1932 bypassing the bottleneck in the community of Newcastle.
Former Hwy 40 Tunnel under Under hillside and UP Railroad on Taylor Rd
Open to traffic

Newhall Tunnel (Los Angeles County, California)
1910
Abandoned tunnel on Sierra Highway
Abandoned; daylighted in 1938

Nicasio Creek Bridge (Marin County, California)
Built 1937
Concrete tee beam bridge over Nicasio Creek on Pt Reyes Petaluma Road
Open to traffic

Nicasio Valley Road Bridge (Marin County, California)
Built 1928
Concrete tee beam bridge over Arroyo Nicasio on Nicasio Valley Road
Open to traffic

No-Hands Bridge (Placer County, California)
Built 1912,
Closed-spandrel Reinforced concrete arch bridge over North Fork American River
Open to pedestrians & horses

Nobles' Trail Twin Bridges (Shasta County, California)
Built 1924, Bypassed 1963
Two concrete curved chord through girder bridges over Dry Creek on Old Nobles Trail Road
Open to pedestrians

North 1st Avenue Bridge (San Bernardino County, California)
Built 1933
Deck plate girder bridge over Mojave River on N 1st Avenue
Open to traffic

North 1st Avenue Overpass (San Bernardino County, California)
Built 1930
Parker through truss bridge over Burlington Northern and Santa Fe Railway on N. 1st Avenue in Barstow
Open to traffic

North Arroyo Boulevard Bridge (Los Angeles County, California)
Built Circa 1920
Closed-spandrel arch bridge over Arroyo Seco on North Arroyo Blvd.
Open to pedestrians

North Arroyo Boulevard Channel Bridge (Los Angeles County, California)
Built 1927
Concrete arch bridge over Arroyo Seco Ch Br on Arroyo Blvd. in Pasadena
Open to traffic

North Broadway Viaduct (Los Angeles County, California)
Built 1909; rehabilitated 1974
Concrete arch bridge over L A Riv,Bnsf,Uprr,Metro, on North Broadway in Los Angeles
Open to traffic

North Fork American River Bridge (Placer County, California)
Built in 1965, this is the fourth highway bridge at this location
Deck plate girder bridge over North Fork American River on CA 49
Open to traffic

North Fork American River Suspension Bridge (Placer County, California)
Lost Wire suspension bridge over North Fork American River on El Dorado Street
Replaced by a new bridge

North Fork Bridge (Placer County, California)
Built 1946
Curved deck truss bridge over North Fork of Middle Fork of American River on FDR 96-Mosquito Ridge Road
Open to traffic

North Fork Calaveras River Bridge (Calaveras County, California)
Built 1938
Concrete tee beam bridge over N. Fork Calaveras River on State Route 12
Open to traffic

North Fork Feather River Bridge (Butte County, California)
Built 1932
Steel arch bridge over North Fork Feather River on CA 70
Open to traffic

North Fork Feather River Bridge (Plumas County, California)
Built 1936
Through truss bridge over North Fork Feather River on CA 70 at Rock Creek
Open to traffic

North Fork of Middle Fork Tule River Bridge (Tulare County, California)
Built 1912-13, Replaced 1988
Lost Pratt deck truss bridge over North Fork of Middle Fork Tule River on State Route 190
Replaced by new bridge

North Fork Trinity River Bridge (Napa County, California)
Lost Warren through truss bridge over North Fork Trinity River on SR 299
Replaced by a new bridge

North Fork Willow Slough Bridge (Yolo County, California)
Built 1930
Culvert bridge with box span and arch span over North Fork Willow Slough on CR 25
Open to traffic

North Main Street Bridge (Los Angeles County, California)
Built 1910
Concrete arch bridge over Los Angeles River on N Main Street in Los Angeles
Open to traffic

North Matilija Tunnel (Ventura County, California)
Built 1931
North Matilija Tunnel on State Route 33
Open to traffic

North Spring Street Bridge (Los Angeles County, California)
Built 1928; Rehabilitated 1939; Seismic upgrade 1992
Concrete arch bridge over Los Angeles River on North Spring Street in Los Angeles
Open to traffic

North Spring Street Bridge (Old) (Los Angeles County, California)
Built 1881; Trolley tracks removed 1918; Replaced 1928
Lost Pratt deck truss bridge over Los Angeles River on North Spring Street & Los Angeles Railway
Replaced by a new bridge

North Torrey Pines Bridge (San Diego County, California)
Built 1933; major restoration in 2012
Concrete tee beam bridge over Mtdb, Bnsf Ry, & Amtrak on N Torrey Pines Road
Open to traffic; major renovation in 2012

Norwood Avenue Bridge (Marin County, California)
Built 1908
Concrete arch bridge over Ross Creek on Norwood Avenue in Ross
Open to traffic

Noyo River Bridge (1948) (Mendocino County, California)
Built 1948
Deck truss bridge over Noyo River on CA 1 in Fort Bragg, replaced 2005
Demolished, replaced by new bridge 2005

Noyo River Bridge (2005) (Mendocino County, California)
Built 2005
Concrete stringer bridge over Noyo River & Harbor Dr on CA 1 in Fort Bragg
Built in 2005

Noyo River Bridge (Pre 1913) (Mendocino County, California)
Lost Through truss bridge over Noyo River on Main Street
Replaced by a new bridge

Noyo River Bridge (Pre 1946) (Mendocino County, California)
Lost Pony truss bridge over Noyo River on Main Street
Replaced by a new bridge

NPC - Keyes Estuary Howe Truss (Marin County, California)
Built 1874; Replaced 1907
Lost Howe through truss bridge over Keys Estuary on North Pacific Coast Railroad
Removed but not replaced

NVRR - Napa River Bridge (Napa County, California)
built 1928, removed/replaced 2011
Bridge over Napa River on Napa Valley Railroad
Replaced

NWP - Alderpoint Bridge (Humboldt County, California)
Built 1913 by the American Bridge Co.
Through truss bridge over Eel River on Northwestern Pacific Railroad (NWP)
Closed to all traffic

NWP - Alto Tunnel (Marin County, California)
Built 1884, closed 1971
Abandoned tunnel on Northwestern Pacific Railroad
Partially collapsed

NWP - Bellum Boulevard Overpass (Marin County, California)
Built 1930
Wooden bridge of NWP Railroad over Bellum Blvd. in San Rafael
Bridge is abandoned on RR right of way

NWP - Black Point Bridge (1891) (Marin County, California)
Built in 1891; Replaced 1911
Parker through truss bridge over Petaluma River on Northwestern Pacific RR
No longer exists

NWP - Black Point Bridge (1911) (Sonoma County, California)
Built 1911
Warren through truss bridge over Petaluma River on Northwestern Pacific Railroad
Open to low emission locomotives and cars carrying animal feed and lumber up north four to five times a week.

NWP - Bohemia Grove Bridge (Marin County, California)
Lost 1907
Lost Pennsylvania through truss bridge over Russian River on Northwestern Pacific Railroad
Destroyed by flooding

NWP - Brown's Canyon Trestle (Sonoma County, California)
Built 1876
Lost Timber stringer over Brown's Canyon on North Pacific Coast Railroad
Removed but not replaced

NWP - Cain Rock Bridge (Humboldt County, California)
Built 1910; 2 northern spans lost during 1964 flood and replaced.
Pratt and Warren through truss bridge over Eel River on Northwestern Pacific Railroad
Closed to all traffic

NWP - Corte Madera Drawbridge (Marin County, California)
Built 1930; Section over Sir Francis Drake Boulevard removed in 2003
Bascule bridge over Corte Madera Creek on abandoned Northwestern and Pacific Railroad in Corte Madera
Closed to all traffic

NWP - Duncans Mills Girder Bridge (Sonoma County, California)
Lost Deck plate girder bridge over Russian River on Northwestern Pacific Railroad
Removed but not replaced

NWP - Duncans Mills Truss Bridge (Sonoma County, California)
Lost Camelback through truss bridge over Russian River on Northwestern Pacific Railroad
Replaced by a new bridge

NWP - Dyerville Loop Road Overpass (Humboldt County, California)
Abandoned timber stringer bridge over Dyerville Loop Road on Northwestern Pacific Railroad
Abandoned

NWP - Eureka Slough Bridge (Humboldt County, California)
Deck plate girder bridge over Eureka Slough on Northwestern Pacific Railroad (NWP)
Open to authorized vehicles only

NWP - Eureka Slough Bridge (1916) (Humboldt County, California)
Built 1916
Lost Through truss bridge over Eureka Slough on Northwestern Pacific RR
Replaced by a new bridge

NWP - Ferryboat Eureka (San Francisco County, California)
Built 1890 Rebuilt 1922 Decommissioned 1957
Ferry over San Francisco Bay on US-101
Intact but closed to all traffic

NWP - Gallinas Creek Bridge (Marin County, California)
Built 1917; Machinery removed 1947; Bridge replaced 2014
Pony plate girder hinged lift bridge over Gallinas Creek on Northwestern Pacific Railroad
Replaced by a new bridge

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