All posts by Michael F Ballard

Michael F Ballard is the author and administrator of the Southern California Regional Rocks and Roads website, https://socalregion.com, since 1995. I have been studying the geology and highway history throughout southern California for most of my life. I am also the President of the Ridge Route Preservation Organization. Founder of the Historic Highway 99 Association of California, https://historic99.org .

US 6 – Santa Clara River Bridge – A Closer Look

US Highway 6, now known as Sierra Highway, crossed the Santa Clara River near Solemint, California. The bridge it originally used, constructed in 1938, is planned to be replaced in the near future. This bridge is one of the oldest remaining in the Santa Clarita area and is the longest span on former US 6 in California. The bridge has remained almost intact from its original construction. The only changes have been minor to the bridge itself. The highway, however, has changed quite a bit. In 1968, Sierra Highway, then State Route 14, was widened to four lanes. A second bridge for northbound traffic was added, with the original bridge being used for southbound traffic.

Presently, Sierra Highway is six lanes wide at the river crossing. As the bridges were built with a four-lane highway in mind, only a narrow shoulder along both directions exists. This condition is one of the reasons the bridges across the Santa Clara River are being replaced.

In March of 2017, I took a trip to inspect in more detail the bridge and the surrounding area. It was nice to see the bridge again, as it brought back a lot of memories. I used to live near the bridge and crossed it almost daily. It will be sad to see it go as it is one of the last remaining pieces of the old highway. So, please, check it out yourself while you still can. I’m not quite sure when the construction will begin, it may have already.

Main Structure:

Side view, from the northern end. Note the small arches along each span.
Southern abutment and wing wall.
Between the 1938 and 1968 spans. Quite a difference between the girders.
Deck view, looking northerly from the south end.
Side view showing the railing, arched spans, and wing wall.

Detailing:

Underside view of the bridge.
Closeup of the west side railing from the south end of the bridge.
View showing the railing at the expansion joint.
Expansion joint that may have moved during an earthquake or from settling.
Expansion joint along the bridge deck.
Deck drain detail.
Remaining section of railroad rail and wire fence embankment protection.

FasTrak and Express Lane Information

After having done a fair amount of research into how roads in Southern California are tolled and how each agency handles the tolling itself, I decided it was time to add another page to the site. Seeing as how each agency uses FasTrak in a different way and that there are, at least for now, five different agencies, each with their own transponder, in the region, it was time to help clarify some things. Please use the link below to access the new page. I hope the new page helps explain the confusion that is FasTrak.

FasTrak and Express Lanes

Adopt-A-Highway Cleanup – May 20, 2017

On May 20, 2017, I am planning a cleanup of my section on I-5 in Grapevine Canyon. Specifically, this is KER-005-6.0/8.0. For those interested in joining, please send us a message to add your name to the list. The plan, thus far, is to meet in Lebec in the morning and carpool to the cleanup site to reduce the number of vehicles along the roadway. Let us know as soon as possible if you are interested in joining us. A partial tour of the remaining sections of US 99 and the Ridge Route in Grapevine Canyon, including Deadman’s Curve, will also be included in the cleanup.

Image of the Week – 4/25/2017

State 79 at Samagatuma Creek with new bridge railing. This is a new style of metal railing that Caltrans has been installing on bridges lately.

San Diego Electric Railway Exposed!

For the first time since 1949, a section of the San Diego Electric Railway, double track at that, is exposed for only a short time before it will be destroyed in Hillcrest. They last saw service on April 23, 1949 as a part of the #7 streetcar line. The City of San Diego is currently restoring the 1914 Georgia St bridge over University Ave. As a part of this project, they are also lowering University Ave between Park Blvd and Florida St.

These tracks represent a bit of San Diego history and I highly recommend a visit in the next week or so before they are gone. Remnants of the former railway are getting harder to find as time passes and more roads are torn up for various projects.

Looking east from Georgia St, tracks are in the median.

Looking easterly toward Georgia St

Looking toward the Georgia St bridge with the tracks in the median

Angled view of the tracks between Georgia St and Park Blvd.

Looking down at the torn up eastbound tracks.

Railroad ties on top of the Georgia St bridge from the roadway below.

Torn up tracks and a #7 bus

Looking west from near Florida St.

More information about the San Diego Electric Railway