Category Archives: Roads

Old US 99 in Colton, CA

Realigned sometime in the 1930’s, the original alignment of US 99 is still visible near the intersection of Valley Blvd and Pepper Ave. Little remains of the original paving of US 99 through the Los Angeles area, so this is a special section.

Looking west along the original paving.
Looking west along the original paving.
Original paving, looking east.
Original paving, looking east.
Cross section of the original paving. Note the lack of rebar. This is most likely from the 1910's.
Cross section of the original paving. Note the lack of rebar. This is most likely from the 1910’s.

Around late 2007, Valley Blvd was again realigned to better accommodate traffic at the I-10 interchange. Sections of the 1930’s paving are now sticking out from under the asphalt.

Colton welcome sign and old Valley Blvd.
Colton welcome sign and old Valley Blvd.
Concrete from the 1930's visible under the asphalt cover.
Concrete from the 1930’s visible under the asphalt cover.
Looking west along Valley toward Pepper Ave.
Looking west along Valley toward Pepper Ave.

See Also:

What is a “Sharrow”?

Sharrows. I’m sure you’ve seen them. Perhaps you’ve even heard about them. What do they mean? A “sharrow” or Shared Lane Marking is a newer addition to roadway striping. They are designed to be along major bicycle routes where a bicycle lane is impractical. The markings show that motorists should not only expect to see cyclists but they should also be further out in the lane.

Sharrows on Howard Ave near 30th St.
Sharrows on Howard Ave near 30th St.

The rules behind these markings are fairly simple. They must be 11′ from the curb and beyond the “door zone”. These sharrows cannot be on roadways with a speed limit greater than 35 mph, though there are some exceptions such as Park Blvd through Balboa Park, which is signed as 40 mph. When a roadway is not marked with sharrows, the rules are still the same. According to the California Vehicle Code (CVC 21202(a)), a cyclist doesn’t always have to ride to the right side of the roadway. The term used is “as far right as practicable”. This means that if roadway conditions warrant, a cyclist may travel away from the right side. When a roadway is marked with sharrows, cyclists should ride with the tires lining up with the arrows.

So, Sharrow or no, a roadway must be shared with cyclists.

Reference:

California MUTCD 2014 – Ch. 9C.07