There are 2,630 bridges in this category · Only showing 1,827 bridges with photos
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California

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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

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
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 - Oroville-Thermalito Bridge (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

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

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 Parks Bar Bridge (Yuba County, California)
Bridge was built in 1993 to replace the old Parks Bar Bridge
Bridge over Yuba River on Highway 20
Open to traffic

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

New Wilbur Springs Road Bridge (Colusa County, California)
Built 2007 to replace 1910 Warren pony truss that was relocated and restored for pedestrians (see http://bridgehunter.com/ca/colusa/bh85033/)
Modern polygonal Warren pony truss bridge over Bear Creek on Wilbur Springs Rd
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 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 Willow Slough Bridge (Yolo County, California)
Built 1930
Culvert bridge with box span and arch span over North Fork Willow Slough on C.R. #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 (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)
Previous Noyo River Bridge Replaced 2005
Concrete stringer bridge over Noyo River & Harbor Dr on State Route 001 in Fort Bragg
Replaces previous Noyo River Bridge, 1948

Noyo River Bridge (2nd) (Mendocino County, California)
Lost Through truss bridge over Noyo River on Main Street
Replaced by a new bridge

Noyo River Bridge (4th) (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 (Marin 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

NWP - Hacienda Howe Truss (Sonoma County, California)
Built 1876; Replaced 1890
Lost Bridge over Russian River on Northwestern Pacific Railroad
Replaced by a new bridge

NWP - Hacienda Metal Pratt Truss (Sonoma County, California)
Built 1914
Lost Pratt through truss bridge over Russian River on Northwestern Pacific Railroad
Replaced by a new bridge

NWP - Hacienda Wooden Pratt Truss (Sonoma County, California)
Built 1890; Burned 1914
Lost Pratt through truss bridge over Russian River on Northwestern Pacific Railroad
Destroyed by fire

NWP - Haystack's Landing Bridge (Sonoma County, California)
Built 1903; Replaced 2015; last train operated over Sept. 21, 2015
Warren through truss bridge over Pataluma River on Railroad (SMART)
Replaced by a new bridge

NWP - Healdsburg Bridge (Sonoma County, California)
Built 1921 to replace earlier timber bridge
Subdivided Warren through truss bridge over Russian River on Northwestern Pacific Railroad
Closed

NWP - Island Mountain Bridge (Trinity County, California)
Built 1965
Warren through truss bridge over Eel River on Northwestern Pacific Railroad
Closed to all traffic

NWP - Island Mountain Tunnel (Trinity County, California)
Tunnel on Northwestern Pacific Railroad
Closed

NWP - Keyes Estuary Phoenix Bridge (Marin County, California)
Built 1880 elsewhere; Relocated here 1906/7; Removed 1931 and relocated again
Pratt through truss bridge over Key's Creek on Northwestern Pacific Railroad
Removed

NWP - Keys Creek Tunnel (Sonoma County, California)
Abandoned tunnel under hillside on North Western Pacific
Derelict/abandoned

NWP - Lagunitas Creek Howe Bridge (Marin County, California)
Built 1875; Replaced 1930
Lost Howe through truss bridge over Lagunitas Creek & Road on Northwestern Pacific Railroad
Replaced by a new bridge

NWP - Loleta Trestle (Humboldt County, California)
Built 1930
Deck plate girder bridge over Loleta creek on Northwestern Pacific Railroad
Closed to all traffic

NWP - Loleta Tunnel (Humboldt County, California)
Renovated in 1960
Abandoned tunnel on Northwestern Pacific Railroad
Abandoned

NWP - Monte Rio Bridge (Sonoma County, California)
Relocated here 1909. Line abandoned 1935. Spans relocated 1937.
Lost Pratt through truss bridge over Russian River on Northwestern Pacific Railroad
Removed

NWP - Old Redwood Highway Overpass (Sonoma County, California)
Bridge over Old Redwood Highway on NWP RR
Open to traffic

NWP - Shively Tunnel (Humboldt County, California)
Abandoned tunnel under hillside on North Western Pacific
Derelict/abandoned

NWP - South Fork Bridge (Temporary) (Humboldt County, California)
Built 1910
Lost Pratt through truss bridge over South Fork Eel River on Northwestern Pacific Railroad
Replaced by a new bridge

NWP - Van Duzen River Bridge (Humboldt County, California)
Built 1913
Pratt through truss bridge over Van Duzen River on Eureka Southern Railroad
Closed to all traffic

NWP - Van Duzen River Bridge (Old) (Humboldt County, California)
Replaced 1913
Lost Through truss bridge over Van Duzen River on Northwestern Pacific Railroad
Replaced by a new bridge

NWP - Wingo Lift Bridge (Sonoma County, California)
Built 1920 by the Toledo Bridge & Crane Co
Pony/through plate girder bridge over Slough feeding San Pablo Bay on Northwestern Pacific Railroad (NWP)
Open to traffic

O'Byrnes Ferry Covered Bridge (Calaveras County, California)
Removed with Tri-Dam Project in 1955
Lost Through truss covered bridge over Stanislaus River on O'Byrnes Ferry Road
Replaced by a new bridge

O'Donnell Lane Bridge (Sonoma County, California)
Built 1900, reconditioned unknown later date
Stone arch bridge over Calabazas Creek on O'Donnell Lane in Glen Ellen
Open to traffic

Oak Avenue Overpass (Los Angeles County, California)
Originally crossed Pacific Electric Railway, now a pedestrian path.
Concrete arch bridge over Pedestrian Path on Bradbourne Ave in Bradbury
Open to Pedestrians Only

Oak Grove Drive Bridge (Los Angeles County, California)
Original bridge built 1896; New bridge added in 1955
Beam bridge over Arroyo Seco on Oak Grove Drive
Open to traffic

Oak Knoll Ave (Napa County, California)
Built 1930
Concrete tee beam bridge over Napa River on Oak Knoll Avenue
Open to traffic

Oak Knoll Avenue Bridge (Napa County, California)
Built 1910
Stone arch bridge over Napa River Overflow on Oak Knoll Avenue
Open to traffic

Oak Park Blvd Overpass (San Luis Obispo County, California)
Built 1956; Replaced 1993
Lost Slab bridge over US 101 on Oak Park Blvd
Replaced by a new bridge

Oaklawn Avenue Overpass (Los Angeles County, California)
Built 1910
Concrete closed spandrel arch bridge over Metrolink (ATSF) on Oaklawn Ave. in South Pasadena
Open to pedestrians

Oakville Crossroad Bridge (Napa County, California)
Built 1922
Concrete tee beam bridge over Napa River on Oakville Cross Road
Open to traffic

Odd Fellows Park Road (Sonoma County, California)
Built 1977; rehabilitated 2008
Steel stringer bridge over Russian River on Odd Fellows Park Road
Open to traffic

Ohman Creek Bridge (Humboldt County, California)
Built 1939
Concrete tee beam bridge over Ohman Creek on State Route 254
Open to traffic

Old Albion River Bridge (Mendocino County, California)
Abandoned bridge over Albion River
Derelict/abandoned

Old Basso Bridge (Stanislaus County, California)
Built 1911 converted to pedestrian use in 1987
Pennsylvania through truss bridge over Tuolumne River on old Hwy 132
Open to pedestrians

Old Bridge (Yolo County, California)
Built 1919
Open-spandrel arch bridge over Putah Creek
Open to pedestrians only

Old Camp Nine Bridge (Calaveras County, California)
Built 1907; Removed 2008
Lost Warren pony truss bridge over Stanislaus River on Old Camp 9 Road
Removed