The Sweetwater River Bridge was built in 1929 to carry Ca highway 94 over the Sweetwater River in San Diego County, California, US. External links Bridgehunter profile Historic Steel Bridge in San Diego County Bridges in San Diego County, California Road bridges in California Steel bridges in the United States Bridges completed in 1951 Bridges completed in 1970 Interstate 8 U.S. Route 80 Bridges on the Interstate Highway System 1929 establishments in California