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State Shield

State Route 177

Click here for a key to the symbols used. An explanation of acronyms may be found at the bottom of the page.


Routing Routing

Rte 177From Route 10 near Desert Center to Route 62 near Granite Pass.

Post 1964 Signage History Post 1964 Signage History

1963-1965: Gilman Springs Road

Post-1964 Legistlative Route Graphic In 1963, Route 177 was defined as “Route 79 near San Jacinto to Route 60 near Moreno.” The routing was approximately along Gilman Springs Road. Lamb Canyon Road (now Route 79) was completed as a through route in early '63; At that point, Route 79's alignment was shifted off the north end of Gilman Springs Road and onto Lamb Canyon, and Route 177 was created for Gilman Springs Road.

In 1965, Chapter 1372 deleted this route.

Post-1972: Near Desert Center

State Shield In 1972, Chapter 1216 defined a new routing: “Route 10 near Desert Center to Route 62 near Granite Pass.” It was built out over the existing Rice Road.

Pre 1964 Signage History Pre 1964 Signage History

The 1964-1965 routing was part of Route 79, and was originally part of LRN 194. In 1959, the legislative route number was changed to LRN 186. It was signed by 1963, but was not part of the 1934 definition of Route 79.

The post-1972 routing was not defined in 1963.

There was no signed Route 177 as part of the initial state signage of routes in 1934. It is unclear what (if any) route was signed as Route 177 between 1934 and 1964.

Other WWW Links Other WWW Links

Statistics Statistics

Overall statistics for Route 177:

Pre-1964 Legislative Route Pre-1964 Legislative Route

In 1933, Chapter 767 added the route from “Brea to [LRN 77] near Chino” to the highway system. In 1935, this was added to the highway code with the routing:

“[LRN 176] near Brea to [LRN 77] near Chino”

This routing remained unchanged until the 1963 "great renumbering. This route ran from Route 90 (nee Route 42) near Brea to Route 71 near Chino. It is part of present-day Route 142. It originally split off or Route 90 [LRN 176] at Carolina (now Kraemer), then Birch/Brea/Olinda Blvd to Valencia Ave, and then up to Carbon Canyon Rd. Sometime after 1959, it was rerouted to take Valencia Ave from Imperial Highway.


Acronyms and Explanations:


Back Arrow Route 176 Forward Arrow Route 178

© 1996-2020 Daniel P. Faigin.
Maintained by: Daniel P. Faigin <webmaster@cahighways.org>.