Interstate 605 opened in stages between May 1964 and January 1971. The north end of I-605 angles northeast to I-210 at Irwindale. State Route 164 was proposed as a freeway connection linking I-605 to the northwest with I-210 via Rosemead Boulevard in 1965. Named the Rio Hondo Freeway, it was never built.1
Controversial plans called for a three mile extension of Interstate 605 south from I-405 and SR 22 to SR 1 in Seal Beach. Proposals for the route considered both freeway and toll road options. However, it was removed from consideration due to local opposition.
North End / Huntington Dr – Irwindale, California
North End Throwback
Original guide signs for I-605 south on Interstate 210 (Foothill Freeway) westbound. Photos taken 11/19/05.
South End – Seal Beach, California
Interstate 605 leading south to I-405 and SR 22 prior to 2011-12 expansion. The southbound roadway was widened to five general travel lanes plus an HOV lane. Photos taken 05/02/10.
These scenes look at the northbound beginning of I-605 from SR 22 prior to the 2012-15 construction of the HOV flyover linking I-405 with the San Gabriel Freeway. Photos taken 05/02/10.
I-405 north & California 22 proceed west from the exchange with Seal Beach Boulevard to split at a wye interchange (Exit 23) just ahead of the HOV for I-605 (San Gabriel River Freeway) north. Photos taken 06/20/15.
Turning north, I-405 (San Diego Freeway) splits with mainline ramp (Exit 24) for Interstate 605 northbound to Lakewood and Cerritos. Photos taken 06/20/15.
Interstate 405 (San Diego Freeway) angles southeast from Willow Street in Long Beach to meet I-605 just across the San Gabriel River. Photos taken 07/08/18.
Exit 23 follows from I-405 (San Diego Freeway) to the southernmost extent of I-605 which leads to SR 22 (7th Street) west in Long Beach. Photos taken 07/08/18.
Previous guide signs on I-405 south at the ramp for I-605 north omitted “Freeway” for San Diego and Garden Grove. Photo taken by 08/02/03.
South End Throwback
Former button copy signs at the westbound separation of SR 22 and I-405, prior to the addition of HOV lanes. Photos taken 11/14/04.