These icons (
)
show footnotes as tooltips... for some browsers.
Interstate 13 does not exist.
I-113 is an early California proposed number inconsistent with the interstate highway numbering convention.
I-113 (preliminary numbering) California (link)
On April 1, 1958, California submitted to AASHO a numbering plan for its proposed
interstates, including 3-digit spurs numbered in the low 100s and not associated
with their parent interstates. Interstate 113 was the proposed number for what
became the original alignment of I-680. [1]
This number was not compliant with AASHO's numbering convention and was rejected.
On August 7, 1958, California had bought in to the system and
submitted I-680. This was approved, along with the rest of California's original
interstate highway system, on Nov. 10, 1958. [2]
(Earlier in 1957, the state had submitted I-5 for this highway. Today's I-5 was
to be called I-11 in that proposal.) [1]
See also:
- California Interstate Route Numbering (Stephen Summers)
- California Interstate Types and History (Daniel Faigin)
Sources
- Summers, Stephen. "Interstate system route numbering." http://www.nwindianahwys.homestead.com/INTER_MAIN.HTML. (29 May 2003)
- Faigin, Daniel. "California Highways (www.cahighways.org): Interstate Highway Types and Interstate History." http://www.cahighways.org/itypes.html (29 May 2003)