I took a trip recently to the Corona area to check out some of the old alignments of US 91. I had been there before, but it has been a long time. Starting from the Green River exit off of the 91 Freeway, I headed east along the south side of the freeway. Here, the roadways named Green River Road and Palisades Drive cover the pre-freeway alignment of US 91. This section is also a portion of the 1939 Prado Dam Relocation. This realignment took the highway out of the riverbed to the north and pushed it closer to the hills. A significant portion remains today relatively intact.
Near the Green River Road interchange, an abandoned portion of the roadbed is revealed by a 1939 culvert. The pavement has long since been removed. A portion of the old median, complete with curb divots, remains to the east. The best portion, however, is on Palisades Drive. This section has a fairly continuous old median, old bridges, wooden railing, and even a mile marker from Route 91. This whole section was bypassed in the early 1970’s along with a change to the 91 / 71 interchange.
I found out recently that the 91 Express Lanes, the toll lanes in the median of the 91 Freeway from the 55 to the Riverside County Line are free for motorcyclists. Now, as I love to travel all roads that are available to me, I ended up signing up for a transponder. It has offered me an interesting look at what goes into getting one and how they work. I shall be posting photos and videos about how these devices work in the near future.
In addition to the transponder, I also obtained a special bag to put the device in when I travel toll lanes that are free and don’t need a transponder. Eventually, I hope that all lanes are the same and won’t need such devices.
A M5.1 earthquake occurred at 9:09PM on March 28, 2014, located 1 mile easy of La Habra, CA, or 4 miles north of Fullerton, CA. The event was felt widely throughout Orange, Los Angeles, Ventura, Riverside, and San Bernardino counties. It was preceded by two foreshocks, the larger of M3.6 at 8:03pm. The demonstration earthquake early warning system provided 4 second warning in Pasadena.
There have been 23 aftershocks as of 10:00PM on March 28, the largest of which was a M3.6 at 9:30PM, and was felt locally near the epicenter. The aftershock sequence may continue for several days to weeks, but will likely decay in frequency and magnitude as time goes by.
The maximum observed instrumental intensity was VII, recorded in the LA Habra and Brea areas, although the ShakeMap shows a wide area of maximum intensity of VI. The maximum reported intensity for the Did You Feel It? map was reported at VI in the epicentral area.
This sequence could be associated with the Puente Hills thrust (PHT). The PHT is a blind thrust fault that extends from this region to the north and west towards the City of Los Angeles. It caused the M5.9 1987 Oct. 1 Whittier Narrows earthquake.
Previously, the M5.4 2008 Chino Hills earthquake occurred in this region. It caused somewhat stronger shaking in Orange County and across the Los Angeles Basin.
The moment tensor shows oblique faulting, with a north dipping plane that approximately aligns with the Puente Hills thrust.
The demonstration earthquake early warning system provided 4 second warning in Pasadena.
Angels Flight is a short funicular railway in downtown Los Angeles. It has been around since 1901, though not continuously. It used to run from Hill St and 3rd St west up Bunker Hill. It was moved about 1/2 block south about 15 years ago. I took this video of it in 2010.
Walking today, I saw that the former San Diego Electric Railway tracks in the median of Park Blvd seem to be staying put. Construction is underway for a “busway” which is tearing out most of the old track and poles. However, at Howard Ave, the tracks are being left in place and reburied beneath the new median. Why this is the case here and not anywhere else is something of a mystery. Hopefully it marks a trend to keep some of the old infrastructure in place instead of destroying it.
On Thursday, November 14, 2013, I had the opportunity to travel Jackrabbit Trail for this first time in many years. I took my new motorcycle, a 2014 Kawasaki KLR 650, which was well suited for the trip. Jackrabbit Trail is a roadway through the Badlands near Moreno Valley that has an interesting history. It was originally built in 1915 as a part of the Riverside to Beaumont Highway, later US 60/70. In 1923-24, the roadway was paved with asphalt. Some of this still exists today. In 1936, the roadway was bypassed by the current route of Hwy 60. However, in 1956, the roadway was rehabilitated for use as US 60 again, albeit temporarily, while the current route was being widened to a four lane expressway. Following this brief use, the old Jackrabbit Trail fell into disuse and eventually was abandoned. The County no longer maintains the road and just posts “Road Closed” signs at either end. It is, however, still a through route, with some landslide and washout problems.
My journey took me over the entire route in both directions, as the southern roadway was closed for reconstruction. I was rather amazed to see how much old railing still exists along the roadway, most of which is from the 1920’s. In many ways, this road is similar to the Ridge Route north of Los Angeles on old US 99. It was built around the same time and bypassed around the same time. The only major difference is that the Ridge Route was not reused by the highway department after it was bypassed. The roadway also offers some rather scenic views of the area. Mt San Gorgonio stays in view when heading north and the lake bed of Mystic Lake is quite visible to the south. I highly recommend this road as an alternative to SR-60 and is good for bicycling as well.
On Sunday, June 16, I went on a motorcycle ride out toward Palm Springs. On Hwy 74 just east of Hemet, I stopped to inspect an abandoned concrete arch bridge to the side of the current bridge. The “new” span, where Hwy 74 crosses today, was built in 1929. This makes the abandoned span most likely from the 1910’s. It appears to have been longer, though the rest is long since washed away. I originally saw this bridge on a previous motorcycle ride, having missed it on every driving trip through here. It just goes to show that you see more on two wheels – be they motorcycle or bicycle wheels.
After leaving the bridge, I headed east on Hwy 74 up into the mountains. The roadway was recently repaved, which was badly needed. The new pavement was quite fun to ride, even with the extra twisty passing areas. The tires seemed to grip the road better allowing me to ride faster than I did before. I didn’t originally plan to go all the way to Palm Springs, but somehow I decided “Why Not?” and did it anyway. It was rather hot while I was there, so I didn’t stay long. Leaving town was almost as difficult as dealing with the heat. Strong west winds, typical for the area, were blowing and made riding somewhat unnerving at times. The winds finally subsided once I got to the Beaumont area and temperatures decreased quite a bit as well.
On April 4, 2010, a 7.2 earthquake struck the northern Baja California and Southern California region. I was in Oceanside at a friends house at the time. Initially, I didn’t feel it and thought the others at the party were joking. We had been talking about the Northridge Earthquake earlier in the day. Once I stepped out onto the patio, I felt the ground moving. I knew it was large but farther away. My first thought was – What just happened to Los Angeles? Instead of Los Angeles, it was the Mexicali/Calexico area that got hit the worst as it was much closer to the epicenter.
Wanting to survey the damage to the roadways in that area and see if any of the old bridges were damaged, I headed out the following weekend. As it was also springtime, parts of the desert were in bloom. The ocotillo in particular had a beautiful display of flowers. To get out there, I followed Hwy 80 out to the Desert View Tower. After talking with Ben, the owner, I headed out to Calexico following Hwy 80 and Hwy 98. I was hoping to see cracks in Hwy 98 from any fault movement but did not find any.
In Calexico, many buildings were damaged with a large portion of the older downtown area closed off until the buildings could be stabilized. The biggest damage I saw was at a hotel in the northwestern end of downtown. Parts of the walls and roof had collapsed.
Returning from Calexico, I stopped at a few bridges to see the fill on each side had settled, causing some cracking in the pavement. Additional cracks were spotted at the New River crossing on old US 80. Overall, the highways were lightly damaged with some concrete broken at some bridges.
I took a trip out to the beach today (May 2). It has been a while since I’ve gone and I wanted to test out my new zipperless wetsuit. I decided on the beach between La Jolla Shores and Black’s Beach. The scenery is great and the beach is far less crowded. So, I put on my wetsuit, grabbed my bag, and headed out on the motorcycle to La Jolla. Parking is so much easier there when you don’t have to worry about a car. It seems every time I go out there I am left wondering why I don’t go more often.
The tide was out when I got there, allowing for a very exposed and wide beach. The waves were pretty decent in spots, with the surfers getting plenty of use out of them. Just north of Scripps Pier, there is a rocky area with some tide pools. I stopped by and checked them out on my way. Today was about exploring and having fun, so why not? I found a small sea arch with quite a few muscles clinging to it. I also found a few starfish and some sort of sea slug. Once past the rocks, it was time to find a spot to go swimming. I’ve been wanting to get in the water with my new wetsuit. I’ve heard that zipperless suits are warmer in the water. This style of wetsuit is quite popular with the surfers around here as well. I found a spot to leave my gear, and I headed out to the water. Initially cold, it ended up being quite comfortable in my suit. I didn’t get the cold rush of water into the suit through the rear zipper, this one not having a rear zipper. It felt great to be out in the water. The ocean is cold here, but fairly clear. I think next time I’ll bring my fins and play around some more in the water.
After my swim, I wanted to explore the beach some more. I headed a bit further north until I reached a canyon that had running water coming from it. I stopped to check out the stream and ended up seeing some surfers with their boards coming out of the canyon. Upon closer investigation, I saw they were using a rope to climb the steep entrance from the beach into the canyon. I decided to explore this canyon a bit. Heading into it was pretty easy, though muddy in places. I was glad to be wearing my wetsuit booties. Much easier to walk in than bare feet. The trail was fairly well worn, though very narrow in places. About 100 yards into the canyon, there was a sizable waterfall. I wondered how I would get past it until I saw a surfer with a long board make it through rather easily. It turns out there was a very well worn series of “steps” in a narrow passage through the sandstone. Once I made my way up these, I got a better view of the upper reaches of the canyon. I decided to head back down, not wanting to end my beach time just yet. Heading down was a little easier than going up.
At the bottom of the canyon, I headed back toward the motorcycle. I stopped for another swim at the same spot I did heading up. I just needed another soak in the ocean. After my swim, I headed over to the rocks where I saw the tide pools earlier. The tide was already coming up, so the outer reaches were flooded. As I got closer to the pier, the beach was a lot busier. It seems like the rocky area is a barrier to some. It sure didn’t stop me today. Overall, it was an enjoyable swim, a fun hike, and I definitely will return sooner. As I live in San Diego, I should at least take advantage of the beautiful beaches we have here in “America’s Finest City”. On my way home I stopped for a burger at the In-n-Out in Mission Valley, where the guy at the counter was rather inquisitive as to why I was wearing a wetsuit. He definitely enjoyed seeing me in my wetsuit. After getting home and doing a bit more research, the canyon I walked up ends at the parking area for the Torrey Pines Glider Port.