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.
Part 2 of my Ridgecrest earthquake field trip is now online. This time, I also won’t forget to add a link!
Finally posting the photos from my August 22, 2019 Ridgecrest trip. Part 1, which covers the fault rupture, is finally up. Part 2, which will cover the problems in Poison Canyon and Trona, are coming soon!
Well, that was strong! I felt it here in San Diego. First time I felt my building sway and it shook for a while. USGS is now reporting the quake as a Mw 7.1, which is 11 times larger than the one yesterday. This, assuming a larger one doesn’t happen, has also been deemed the …
Long before the Isabella Reservoir was built in the 1950’s, State Highway 178 passed through the Kern River Valley on an alignment much different than it is today. With the current drought, Lake Isabella is a puddle of what it used to be…but it’s amazing what the lake has hidden all these years. The lake …
Southern California Regional Rocks and Roads
Exploring the highways, geology, history and landscapes of Southern California.