California Highways:
www.cahighways.org

This route was defined in 1970.

The section of Worthington Road east of County Sign Route S32 (i.e., the erroneous Google Maps eastern extension) is unpaved. Looking closer at Google Maps, it appears Graeser Road / the East Highline Canal are considered the eastern terminus of this “paper” extension of County Sign Route S28 past both County Sign Route S32 (Holt Road) and County Sign Route S33 (Highline Road). While there is no “END” or “BEGIN” shields for County Sign Route S28 at its eastern terminus with County Sign Route S32, the signage indicating the intersection with County Sign Route S28 along NB County Sign Route S32 makes it clear that County Sign Route S28 only continues west from the intersection (i.e., a left turn arrow is shown). 
(Source: Adrian Ople in private email, 8/21/2026)

The intersection of County Sign Route S33 and Worthington Road is a very minor one. There are yellow intersection signs or green roadside signs indicating the intersection. The only signage for this intersection is a standard street name pole for intersections located about 40 feet off County Sign Route S33, which is a bit far.
(Source: Adrian Ople in private email, 8/21/2026)

Similar to how Google Maps extends its signage of County Sign Route S28 east of its legal terminus, Google Maps extends signage of County Sign Route S28 west of its legal terminus at County Sign Route S30 up to Huff Road (about 5.8 miles). No part of this section of Worthington Road is actually signed, but, unlike the erroneous western extension of County Sign Route S27 and eastern extension of County Sign Route S28, this section is actually paved, and combined with Huff Road could be considered a route between Imperial and Dixieland. The intersection of Huff and Worthington includes a wye-style curve for traffic going from NB Huff to EB Worthington, lending more credibility to the Dixieland-Imperial route consideration. The road is well-maintained (even being in a much better conditions than the portion of County Sign Route S26 west of Brandt Road) and includes signage indicating distance from the City of Imperial. Therefore, even if it’s not legally considered part of County Sign Route S28, Worthington Road between Huff and Forrester could be considered a de facto portion of the route. This de facto route consideration could also be extended to Huff Road from Old US 80 to Worthington.
(Source: Adrian Ople in private email, 8/21/2026)

Signage at the western terminus of County Sign Route S28 implies that the route does continue west on Worthington past County Sign Route S30 (Forrester Road). NB County Sign Route S30 includes a County Sign Route S28 shield with bidirectional arrows, indicating that the road continues both west and east from the intersection. SB County Sign Route S30 does not have this issue, instead showing a left arrow. WB County Sign Route S28 does not show an “END” shield, but instead a shield with a “forward” arrow sign. Obviously, this implies that WB County Sign Route S28 continues onward past Forrester Road, even though this isn’t legally true. The first EB shield for County Sign Route S28 also shows a forward arrow, rather than a “BEGIN” sign.
(Source: Adrian Ople in private email, 8/21/2026)

Total mileage: 14.00 mi.

• ⦅Routing⦆
  • Segment 1
  • Segment 2
  • Segment 3
• ⦅History and Signage Information⦆
• ⦅Status⦆
• ⦅Acronyms and Explanations⦆