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Caltrans Intranet         Quick Picks       Caltrans Internet BIRIS (Intranet) | California Office of Historic Preservation | CHPW Index | HABS/HAER | Minerva Catalog (State Archives) | Online Archive of California By Subject Bridges: General & Construction | Bay Area & Northern California | Southern California | Caltrans Resources Maps & Geographic Place Names (Historic) Caltrans History: General | District Pages | Pavement & Paving Highway Signs & Shields Photographs Highways - California: General | El Camino Real | Ridge Route | Plank Road | Northern California | Southern California Transportation History: General | Automobiles | Engineering | Equipment | Rail & Transit | Trucks | Publications Highways - U. S: General | Good Roads | US 40 | Lincoln Hwy | US 50 | Route 66 | US 99 | Interstates U.S. & State DOT History BRIDGES General Bridge & Bridge Construction Resources Bridge Construction and Engineering Home (Bridgepros) Bridge Engineering Page (Mark Ketchum) Bridges (Dave Denenberg) Bridges (Portland Cement Association) Digital Bridges - Bridges of the Nineteenth Century (LeHigh Universities) Factophile.com : Science & Technology : Major Bridges Godden Structural Engineering Slide Library (UC Berkeley EERC) Leonhardt, Andra & Partners Structures Slide Library (UC Berkeley NISEE) Inventory of U. S. Suspension Bridges (Dave Denenberg) National Concrete Bridge Council - Bridge Types Roebling's Online History Archive (suspension bridges) U.S. Bridges – AASHTO Bay Area & Northern California Bridges Carquinez | Golden Gate | SFOBB | Tower Bridgeport Covered Bridge (Nevada County) Bridging the Bay - Antioch (UC Berkeley Library) Bridging the Bay - Dumbarton (UC Berkeley Library) Bridging the Bay - Richmond-San Rafael (UC Berkeley Library) District 4 Toll Bridges Highway Bridges, A Fusion of Art and Function : A Northern California Sampler (Living Gold Press) Historic Bridges in Butte, Nevada and Yuba Counties, California Historic Drawbridges of the Delta History of "No Hands Bridge" (El Dorado County) San Francisco Bay Crossings Carquinez Bridging the Bay - Carquinez (UC Berkeley Library) Mark Ketchum's Carquinez Strait Bridge Page New Carquinez Bridge (District 4) Golden Gate Bridge Associated Oil Company's Bridge Construction Folios (Golden Gate and SFOBB Construction) - 1934-1936 (SF Museum) Bridging the Bay - Golden Gate (UC Berkeley Library) Golden Gate Bridge Bond Issue Goes to the Voters - 1930 Golden Gate Bridge, Highway and Transportation District Golden Gate Bridge Historic Photos Golden Gate Suspension Bridge (BridgePros) San Francisco Oakland Bay Bridge Associated Oil Company's Bridge Construction Folios (Golden Gate and SFOBB Construction) - 1934-1936 (Virtual Museum of the City of San Francisco) Bay Bridge design (The Gate) - new east span Bay Bridge Construction Halted by "Bloody Thursday" Riots - 1934 (Virtual Museum of the City of San Francisco) Bridging the Bay - San Francisco-Oakland Bay (UC Berkeley Library) District 4 Toll Seismic and New Bridge Projects San Francisco-Oakland Bay Bridge - Construction Photographs, 1931-1936 (OAC Finding Aid - Bancroft Library) San Francisco-Oakland Bay Bridge (MTC ABAG Library) Tower Bridge Tower Bridge - HABS-HAER pictures from the Library of Congress Tower Bridge History (Joel Windmiller) Southern California Bridges Los Angeles County LA Bridges (Los Angeles Almanac) Vincent Thomas Bridge (Los Angeles Almanac) Monterey County Bixby Creek Bridge (Monterey County Historical Society) Bixby Creek Bridge (Pat Hathaway) Santa Cruz County Bridges Span Santa Cruz's Past (Ross Gibson) Covered Bridges (John Young) Santa Cruz City Public Works - includes Laurel Street, Soquel Avenue & Water Street Bridges Caltrans Resources California Historic Bridge Inventory California Local Agency Bridge List California Log of Bridges on State Highways Caltrans Toll Bridge Program Structure Maintenance & Investigations (Intranet) Structure Maintenance & Investigations Home Page top CALTRANS HISTORY General Caltrans Fact Sheet - Important Events in Caltrans History Caltrans Fact Sheet - Botts' Dots California Highways & Public Works Index, 1937-1967 California Highways & Public Works Photograph Index, 1937-1967 Caltrans History Preservation Committee District History Pages District 9 History HIGHWAY SIGNS & SHIELDS California Guide Signs (David Kriske) California Traffic Signs (Brian Smith) Highway Route Markers (James Lin) Maneri Sign Company Manual of Traffic Signs (Richard C. Moeur) Open Directory - Recreation : Roads and Highways : Highway Signs top HIGHWAYS - CALIFORNIA General 2007 Named Freeways, Highways, Structures and Other Appurtenances In California California Highways (Dan Faigin) In Our Path : Introduction (Jeff Gates) State Highway Routes (Casey Cooper) State Highways Route Numbering - 1934 The Highwayman (Joel Windmiller) Northern California California Highways : Links to California Road History The California Gold Country : Highway 49 Revisited Interstate "Indigestion" 238 (Casey Cooper) Southern California California Highways : Southern California Freeway Development - Part I California Highways : Southern California Freeway Development - Part II California Highways : Southern California Freeway Development - Part III District 8 Route Concept Reports (Intranet) Freeway Interchanges Around the Los Angeles Area (Mike Ballard) Highway 56 (Casey Cooper) Highway 252 (Deceased) (Casey Cooper) Historical Highways of Central and Southern California (Mike Ballard) Historic Photos of San Diego Highways (Mark Furqueron) Mountain Springs (Mountain Springs Grade) (The Journal of San Diego History) Past Highway Names in Los Angeles County Pictorial Guide to the Los Angeles Area Highways (Mike Ballard) Racetrack to Highway : San Diego's Early Automobile Days (The Journal of San Diego History) El Camino Real California Highways : El Camino Real El Camino Real (Historical Marker Database) Plank Road Old Plank Road : Imperial San Dunes (DesertUSA.com) The Plank Road (The Journal of San Diego History) Ridge Route Ridge Route (Ridge Route Preservation Organization) Santa Clarita Valley History In Pictures - Ridge Route (SCV Historical Society) Virtual Tour of the Ridge Route (Mike Ballard) top HIGHWAYS - U. S. General Andy's Highway Kick-Off Page (Andy Field & Alex Nitzman) Evolution of the US Highway System in the Midwest (Michigan State University) From Names to Numbers : the Origins of the U.S. Numbered Highway System (FHWA) Federal Road Act of 1916 : Building the Foundation (FHWA) Highway History Bibliography (FHWA) Historic California US Highways (Casey Cooper) Open Directory - Recreation : Roads and Highways - Historic Public Roads Magazine - Vol. 1, No. 1 (1918) Public Roads Magazine - "For the Common Good : The 85th Anniversary of a Historic Partnership" (founding of AASHO) U.S. Highways: From US 1 to (US 830) (Robert V. Droz) Good Roads Movement Good Roads to Tourism (Oregon State Archives) Making of America - "digital library of primary sources" Making of America Journal Articles Collection (Overland Monthly and Out West Magazine) US 40 National Old Trails Road : Part I : The Quest for a National Road (FHWA) National Old Trails Road : Part II : See America First in 1915 (FHWA) National Road Association of Illinois History of the Lincoln Highway : From Dirt Path to Concrete Highway Lincoln Highway - General Lincoln Highway (FHWA) Lincoln Highway Digital Image Collection (University of Michigan Library ) Lincoln Highway (James Lin) Mohawk-Hobbs Elevation Guide - Lincoln Highway (Sacramento - San Francisco via Vallejo) Lincoln Highway - California Lincoln Highway Association - California Chapter Lincoln Highway - California (James Lin) US Highway 40 - The Lincoln Highway (Casey Cooper) US 50 California Highways : US Highway 50 Coast to Coast on US Highway 50 : A Brief History of America's Backbone (Alvin Edlund, Jr.) Route 66 National Historic Route 66 Federation New Mexico Route 66 Association Oklahoma Route 66 Association Route 66 - California Mojave Desert U S 99 Historical Tour of US 99 - Introduction (Mike Ballard) Historic US 99 (Casey Cooper) Interstates 3-Digit Interstates (Scott Oglesby) Building the Interstate (FHWA) California Celebrates 50 Years of the Interstate Highway System (Caltrans) California Highways : Interstate Highway Types and the History of California's Interstates California Highways : Interstate 80 Creating the Interstate System - Federal-Aid Highway Act of 1956 (Public Roads On-line - FHWA) Highway History (FHWA) Interstate 480 Freeway Plan (David Kriske) Origins of the Interstate (FHWA) Public Roads On-Line (Summer 1996) - Index Route Log & Finder List - Interstate Highway System (FHWA) Utah Highways Pages - Nationwide Interstate Links (Daniel Stober) top MAPS & GEOGRAPHIC PLACE NAMES California County Maps 1850 - present (California Association of Counties) California Maps (University of Texas Libraries) - includes 1917 city maps Date Codes for Maps (Western Association of Map Libraries) David Rumsey Historical Map Collection Map Collections Home Page (Library of Congress) Panoramic Maps Collection, 1847-1929 (Library of Congress) Railroad Maps Collection, 1828-1900 (Library of Congress) San Francisco Historical Maps top PAVEMENT & PAVING Asphalt History FAQs (Asphalt Institute) Concrete Pavement (Portland Cement Association) Evolution of the U. S. Pavement Marking System (Texas Transportation Institute) History of Asphalt (beyondRoads.com) History of Concrete (Dee Concrete) History of Paving (Mirage Paving) John Knapton's Pictorial Guide to Paving Through the Ages Pavement History - Highways (Portland Cement Association) top PHOTOGRAPHS Built in America - HABS/HAER Collections (Library of Congress) California State Library Picture Catalog Calisphere - Primary Source Images Caltrans Photo Library (Intranet) FEMA Photo Library - searchable by keyword & state Guide to the Photo Collections of the San Diego Historical Society (The Journal of San Diego History) Historic Photos of San Diego-area Highways (Mark Furqueron) Images of Our Past : The San Diego Title Insurance and Trust Company Historical Photographs Collection (The Journal of San Diego History) Sacramento History Online Santa Clarita Valley History In Pictures (Santa Clarita Historical Society Santa Monica Public Library - Image Archives top TRANSPORTATION HISTORY General Articles and Links about Roads and Transportation (Scott Kozel) How the Wheels Got Turning : A Historical Perspective on American Roads (About.com : Inventors) Women's History in Transportation (FHWA) Automobiles California Department of Motor Vehicles Milestones Early Adventures With the Automobile (Eyewitness to History.com) Los Angeles' First Automobile Engineering 150 Years of Civil Engineering (ASCE) Geotechnical Research Report (FHWA) History and Heritage of Civil Engineering (ASCE) The Civil Engineering Portal - Transportation Engineering - Highway Engineering Equipment Historical Construction Equipment Association Roebling's Wire and Wire Products Rail & Transit California Zephyr Virtual Museum Electric Railway Historical Association of Southern California Los Angeles Transit History (Dorothy Peyton Grey Transportation Library) Rebuilding the California Southern Railroad : The Personal Account of a Chinese Labor Contractor, 1884 (The Journal of San Diego History) San Diego's Cable Railway (The Journal of San Diego History) San Diego's First Railroad (The Journal of San Diego History) The First Days of the Municipal Railway (SF MUNI) Transit in San Diego: ASCE Anniversary Project (The Journal of San Diego History) Trucks American Truck Historical Society Publications Public Roads On-Line - Past Issues (1993-2008) TRB Publications Index (1923-2008) Westways - Auto Club of Southern California -Back Issues (1999- ) [may need to enter zip code 90007] top U.S. & STATE DOT HISTORY WEB SITES Connecticut DOT 100-Year History FHWA Historic Preservation and Archaeology Program Iowa DOT History (pdf) Michigan Highways - Historical Overview (unofficial site) Minnesota DOT History Nebraska Department of Roads - History New York State DOT History North Carolina DOT History Oregon DOT History Center Oregon DOT Museum Wisconsin Highways - Historical Overview (unofficial site) US DOT Office of the Historian top