From the Archives –
This map of the Lake Elsinore area comes to us from San Diego County dating from November 1883. At the time, Elsinore was a part of San Diego County. In 1893, this area became a part of Riverside County.
This photo shows the I-10 / I-215 interchange in San Bernardino, California as it existed in 1958. At the time, those numbers didn’t quite exist. Back then, this was the junction of US 70, US 91, US 99, US 395, and State 18. The view is looking south along what is now I-215 with the Santa Ana River bridges in the foreground. The bridge to the left was US 99 until the 1930’s. The two bridges to the right are still around, though widened.
Curious about those sirens around Los Angeles? This person mapped them all and has information about each one as well.
Five miles east of Santa Margarita, State 58 crosses the Salinas River. Until 1996, the highway crossed via this 1914 Parker truss span. From 1934 to 1964, the bridge was crossed by State 178, which became State 58 in 1964. The approach to the old bridge included two sharp curves at either end, which the new concrete bridge (49-0237) and alignment eliminated. Today, it is closed to motor vehicle traffic and marked as a Historic Bridge. The new bridge is to the north of this at SLO-58-R4.8.
To commemorate the 50th anniversary of the February 9, 1971 M6.6 Sylmar / San Fernando Earthquake, our featured image shows the construction work in progress on the I-5 and State 14 interchange in 1970. This work would be halted abruptly in the early hours of February 9, 1971. After this, it would be reconstructed two more times. The earthquake changed the way freeways such as this were built and did further seismic codes throughout the state.
For further information about the interchange: