Interstate 505

Reassurance marker for Interstate 505 north after Exit 29 in rural Yolo County. Photo taken 03/31/05.

Interstate 505 runs north from I-80 near Vacaville to Winters and I-5 near Dunnigan. The freeway provides a fast route from the San Francisco Bay Area to Northern California and the Pacific Northwest.

Interstate 505 Highway Guides

Originally incorporated in the Interstate 5W loop west from the Central Valley to Oakland in 1964, initial construction for Interstate 505 took place at the south end with Interstate 80 in 1968. Most of the freeway in Solano County was built in 1974. The Yolo County portion of I-505 was constructed as a two lane highway in 1959, with expansion to four lanes in 1980.

Interstate 505 scenes
Interstate 505 signage near the Vacaville Outlets. Control cities for the northbound freeway include Redding for the connection with I-5 north. Photos taken 10/24/00.
This Interstate 505 shield is located in Vacaville near the southern terminus adjacent to the outlet mall. Photo taken 09/22/00.
This shield on eastbound Road 12A in Yolo County points the way to Interstate 505 north. Note that the "505" is written in Highway Gothic Series E font, which is fairly uncommon in California for stand alone shields. Photo taken 12/29/04.
At the same interchange (Road 12A) is this freeway entrance shield assembly for Interstate 505 south. Photo taken 12/29/04.

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Page Updated January 23, 2008.

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