Interstate 605

Interstate 605 marker
Interstate 605
San Gabriel River Freeway
Map
I-605 highlighted in red
Route information
Auxiliary route of I-5
Maintained by Caltrans
Length27.40 mi[1] (44.10 km)
History1940s as a state highway, 1964 as a number[2]
NHSEntire route
Major junctions
South end I-405 / SR 22 in Seal Beach
Major intersections
North endHuntington Drive in Duarte
Location
CountryUnited States
StateCalifornia
CountiesOrange, Los Angeles
Highway system
I-580 I-680

Interstate 605 (abbreviated I-605, officially known as the San Gabriel River Freeway) is a 27-mile-long (43 km) major north–south auxiliary Interstate Highway in the Greater Los Angeles urban area of Southern California. It runs from I-405 and State Route 22 (SR 22) in Seal Beach in Orange County to I-210 just south of the IrwindaleDuarte border in Los Angeles County. The San Gabriel River Freeway closely parallels the San Gabriel River for most of its alignment, hence its name, which is one of the few Southern California freeways not named after a city along its route.

Aside from changes to the interchange with I-105 (which did not open until the early 1990s), and the addition of an HOV lane between I-405 and I-10, I-605 is one of the only remaining freeways that kept its original alignment throughout its run through Los Angeles County since it first opened.

  1. ^ "Route Log and Finder List - Interstate System: Table 2". FHWA. Retrieved October 7, 2007.
  2. ^ "Los Angeles Highways". Scvresources.com. Archived from the original on November 15, 2011. Retrieved January 26, 2013.