External History Resources
Quick Picks
California Office of Historic Preservation
HABS/HAER/HALS | Minerva Catalog (State Archives) | Online Archive of California
Bridges
General Bridge & Bridge Construction Resources
Bay Area & Northern California Bridges
Carquinez
Golden Gate Bridge
- Associated Oil Company's Bridge Construction Folios (Golden Gate and SFOBB Construction) - 1934-1936 (SF Museum)
- Golden Gate Bridge Bond Issue Goes to the Voters - 1930
- Golden Gate Bridge Historic Photos
San Francisco Oakland Bay Bridge
Southern California Bridges Los Angeles County
Monterey County
Santa Cruz County
Caltrans History
General
Highway Signs & Shields
- California Guide Signs (David Kriske)
- California State Highway markers
- California Traffic Signs (Brian Smith)
- Manual of Traffic Signs (Richard C. Moeur)
Highways - California
General
Northern California
- California Highways : Links to California Road History
- The California Gold Country
- 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
- Highway 56 (Casey Cooper)
- Highway 252 (Deceased) (Casey Cooper)
- Route 61 The Angeles Crest Highway
- Sepulveda Canyon and the 405
El Camino Real
- California Bell Company
- California Highways : El Camino Real
- El Camino Real (Historical Marker Database)
- How El Camino Real was invented
Plank Road
Ridge Route
- Ridge Route (Ridge Route Preservation Organization)
- Santa Clarita Valley History In Pictures - Ridge Route (SCV Historical Society)
- Southern California’s Ridge Route – A Short History
Highways - U. S.
General
- From Names to Numbers : the Origins of the U.S. Numbered Highway System (FHWA)
- Highway History Bibliography (FHWA)
- 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)
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)
Lincoln Highway - General
- Lincoln Highway (FHWA)
- Lincoln Highway Digital Image Collection (University of Michigan Library )
- Mohawk-Hobbs Elevation Guide - Lincoln Highway (Sacramento - San Francisco via Vallejo)
Lincoln Highway - California
US 50
Route 66
- National Historic Route 66 Federation
- New Mexico Route 66 Association
- Oklahoma Route 66 Association
- Route 66 - California Mojave Desert
US 99
Interstates
- 3-Digit Interstates (Scott Oglesby)
- Building the Interstate (FHWA)
- California Highways : Interstate Highway Types and the History of California's Interstates
- California Highways : Interstate 80
- Highway History (FHWA)
- Interstate 480 Freeway Plan (David Kriske)
- Origins of the Interstate (FHWA)
Maps & Geographic Place Names
- California Maps (University of Texas Libraries) - includes 1917 city maps
- 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)
Pavement & Paving
Photographs
- Built in America - HABS/HAER Collections (Library of Congress)
- Santa Clarita Valley History In Pictures (Santa Clarita Historical Society
Transportation History
General
- How the Wheels Got Turning : A Historical Perspective on American Roads (About.com : Inventors)
- Women's History in Transportation (FHWA)