Category Archives: San Gabriel Mountains

Image of the Week – 11/29/2015

Out in Rancho Cucamonga inspecting the Sierra Madre Fault.
Out in Rancho Cucamonga inspecting the Sierra Madre Fault.

Image of the Week – 2/16/15

Mt Baldy Road, Lower Tunnel. Built in 1949.
Mt Baldy Road, Lower Tunnel. Built in 1949.

Image of the Week – 11/1/14

On the trail to Mt San Antonio along Devils Backbone.
On the trail to Mt San Antonio along Devils Backbone.

Road Building in San Gabriel Canyon

In the early 1930’s, Los Angeles County began construction of an additional roadway over the San Gabriel Mountains via the East Fork of the San Gabriel River. The road, then known as the Camp Bonita – Prairie Fork Road, was about half complete with with four larger bridges and a tunnel, by early 1938. Work had progressed as far as “The Narrows” by 1938. However, the March 2-3, 1938 storms caused much of the roadway to be washed out. The project was then abandoned, leaving a large arch bridge stranded many miles upriver. The tunnel still exists as well, just north of the “Bridge to Nowhere”, though it has been sealed at both ends.

P4260073
1936 arch bridge – The Bridge to Nowhere
1936 stamp on the arch bridge.
1936 stamp on the arch bridge.
Looking over the arch bridge to the tunnel site.
Looking over the arch bridge to the tunnel site.
Abandoned and partly destroyed bridge over the river.
Abandoned and partly destroyed bridge over the river.
Bridge over Cattle Canyon on the East Fork Road. This is similar to what the removed bridges north of here would have looked like.
Bridge over Cattle Canyon on the East Fork Road. This is similar to what the removed bridges north of here would have looked like.
1934 USGS Camp Bonita map showing the roadway completed to about 1 mile south of the “Bridge to Nowhere” site.
1940 USGS Camp Bonita map showing the now stranded bridge location.

In the 1955,  a new road building project commenced in the canyon, first known as East Fork Road, then Shoemaker Canyon Road. This new alignment would stay high above the canyon floor until it got nearer to the “Bridge to Nowhere”, allowing that earlier work to come to some use. Progress on this roadway was slow, mostly due to poor funding. Convict labor was used for most of the project, similar to many other road building efforts at the time in Los Angeles County. Two tunnels were constructed as well. These still exist and are mostly intact. This project too was cancelled in 1976 , leaving another large scar in the canyon. This road is presently known as Shoemaker Canyon Road.

Stone railing along Shoemaker Canyon Road.
Stone railing along Shoemaker Canyon Road.
Looking toward the higher peaks of the San Gabriels along Shoemaker Canyon Road.
End of the pavement and open section of Shoemaker Canyon Road.
End of the pavement and open section of Shoemaker Canyon Road.
1961 and 1964 tunnels in view.
Partly graded roadway and tunnel along the "Road to Nowhere".
Partly graded roadway and tunnel along the “Road to Nowhere”.
Date stamp on the first tunnel.
Inside the longest tunnel, from 1961.
Grading along the "Road to Nowhere".
Grading along the “Road to Nowhere”.
Northern tunnel from 1964.
Northern tunnel from 1964.
1966 USGS Glendora map showing the “Shoemaker Canyon” roadway under construction.

Today, the canyon is protected from future development through the Sheep Mountain Wilderness Area. Even without this protection, the geology of the canyon makes for a very expensive project. Maintenance would also be costly, as seen with State 39 through San Gabriel Canyon and above Crystal Lake. In time, all these structures and cuts will wash away, leaving the canyon with only bits of concrete and asphalt to show what was once here.

Remnants of paving in the canyon.
Remnants of paving in the canyon.

A ride in the San Gabriel Mountains

On my way home from a friends in Los Angeles on January 8, 2013, I decided to take the long way home. It was a beautiful day and I had plenty of daylight left. So, I took a turn into the mountains. It was the first time in a long time I had taken Hwy 39 – San Gabriel Canyon Road – and it was time to ride it on my motorcycle. I wanted to see where it was gated, it seems to change often how far up you can go. This time it was open through to Crystal Lake, which was good to see. I had a great time, even chatted with another motorcyclist at the gate for a while.

Gate just above Crystal Lake
Gate just above Crystal Lake

Toward Crystal Lake and Mt Hawkins
Toward Crystal Lake and Mt Hawkins

Down the mountain and into the canyon.
Down the mountain and into the canyon.

Once I headed back down the mountain, I headed over to the Glendora Ridge Road to meet the valley in Upland instead of Azusa. I wanted to see something different. Glendora Ridge Road is quite a lot of fun on a motorcycle, at some point I do want to bicycle it though. I saw quite a few cyclists (motor and pedal) that day, more people on two wheels than four. The snow on Mt San Antonio was a grand sight to see riding along the ridge. Winter in the San Gabriels is always a favorite of mine.

On Glendora Ridge Road with Mt San Antonio in the distance
On Glendora Ridge Road with Mt San Antonio in the distance

Fun section with lots of curves
Fun section with lots of curves