I-5: San Diego County

San Diego Freeway

I-5 through San Diego County follows old US 101. The first section was opened south of downtown San Diego from National City to San Ysidro in the mid 1950’s. It was fully complete through San Diego County by the late 1960’s.

Construction in 2006 of the new "Merge" and bypass lanes at I-805.
Construction in 2006 of the new “Merge” and bypass lanes at I-805.
Souith at the 163, the "Four Level" interchange in San Diego.
Souith at the 163, the “Four Level” interchange in San Diego.
Former US 101 shield covered to the right.
Former US 101 shield covered to the right.
Northbound at Pershing Drive. This would have been the interchange to the Switzer Canyon Freeway.
Northbound at Pershing Drive. This would have been the interchange to the Switzer Canyon Freeway.

Montgomery Freeway

South of the 163, I-5 becomes the Montgomery Freeway. While it was originally completed in the mid 1950’s from National City to San Ysidro, it was completely reconstructed in the early 1970’s to its present state.

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