Interstate 605 California

Interstate 605 California
Seal Beach, CA ↔ Huntington Dr – Irwindale, CA•27.40 miles

Overview

I-605 at I-105 - Norwalk, CA
Interstate 605 at the east end of I-105 (Century Freeway) in Norwalk. 07/09/18

A well traveled route through the communities east of the city of Los Angeles, Interstate 605 is the San Gabriel River Freeway. The freeway originates at the exchange joining SR 22 east from Long Beach with I-405 (San Diego Freeway) at Seal Beach. Overhead signs along the route omit control cities and instead read "Thru Traffic." With eight to ten overall lanes, I-605 runs north from Los Alamitos and Lakewood to Cerritos, Bellflower, Norwalk and Interstate 5 (Santa Ana Freeway) at Downey. Continuing northeast, the San Gabriel River Freeway extends between Pico Rivera and Whittier to Baldwin Park and I-210 (Foothill Freeway) at Duarte.

Mileage by State

California27.97 mi

Data Sources

December 31, 2025 Interstate Route Log and Finders List

History

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.

 Interstate 210 ‐ Huntington Dr – Irwindale, CA

Interstate 605 North at Interstate 210

I-605 north at I-205 - Irwindale, CA

I-605 north at Live Oak Avenue. Interstate 605 skirts the San Gabriel River channel and flood control basins northward alongside a series of transmission lines to I-210 (Foothill Freeway). 07/15/09

I-605 north at I-205 - Irwindale, CA I-605 north at I-205 - Irwindale, CA I-605 north at I-205 - Irwindale, CA I-605 north at I-205 - Irwindale, CA I-605 north at I-205 - Irwindale, CA

Interstate 210 East at Interstate 605

I-210 east at I-605 - 2004

1.25 miles ahead of Exit 36 A for Interstate 605 (San Gabriel River Freeway) on I-210 eastbound. 11/14/04

I-210 east at I-605 - 2004 I-210 east at I-605 - Duarte, CA I-210 east at I-605 - 2004 I-210 east at I-605 - Duarte, CA I-210 east at I-605 - 2004 I-210 east at I-605 - 2004

Interstate 210 West at Interstate 605

I-210 west at I-605 - Irwindale, CA

I-210 advances 1.25 miles west from Irwindale Avenue (Exit 38) to Interstate 605 (San Gabriel River Freeway) at Duarte. 07/08/18

I-210 west at I-605 - Irwindale, CA I-210 west at I-605 - Irwindale, CA I-210 west at I-605 - Irwindale, CA I-210 west at I-605 - Irwindale, CA

Huntington Drive at Interstate 605

Huntington Dr east at I-605 - Duarte, CA

Huntington Drive east at the southbound beginning of I-605 from Mount Olive Drive in Duarte. This button copy sign remained in service until 2018. 07/21/01

Huntington Dr east at I-605 - Duarte, CA Mt Olive Dr south at I-605 - Duarte, CA

North End – Past Views

Past Views Gallery (Tap to Expand / Collapse Section)

Interstate 210 West at Interstate 605

I-210 west at I-605 - 2005

Original guide signs for I-605 south on Interstate 210 (Foothill Freeway) westbound. 11/19/05

I-210 west at I-605 - 2005 I-210 west at I-605 - 2005 I-210 west at I-605 - 2005

South End Interstate 405 California State Route 22 ‐ Seal Beach, CA

Interstate 605 South at Interstate 405 California State Route 22

I-605 south at I-405/SR 22 - Los Alamitos, CA

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. 05/02/10

I-605 south at I-405/SR 22 - Los Alamitos, CA I-605 south at I-405/SR 22 - Los Alamitos, CA I-605 south at I-405/SR 22 - Los Alamitos, CA I-605 south at I-405/SR 22 - Los Alamitos, CA

California State Route 22 East at Interstate 405 Interstate 605

SR 22 east at I-405/605 - Seal Beach, CA

SR 22 (7th Street) transitions into a freeway east from the RIRO ramps with Stubebaker Road. The state route crosses the San Gabriel River a quarter mile ahead of the flyover for I-405 and I-605 north. 05/02/10

SR 22 east at I-405/605 - Seal Beach, CA SR 22 east at I-405/605 - Seal Beach, CA

Interstate 605 North at Interstate 405

I-605 north at I-405 - 2010

05/02/10

I-605 north at I-405 - 2010 I-605 north at I-405 - 2010 I-605 north at I-405 - 2010

Interstate 405 North California State Route 22 West at Interstate 605

I-405/SR 22 north at I-605 - Seal Beach, CA

I-405/SR 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. 06/20/15

I-405/SR 22 north at I-605 - Seal Beach, CA I-405/SR 22 north at I-605 - Seal Beach, CA I-405/I-605 HOV separation I-405/SR 22 north at I-605 - Seal Beach, CA I-405/SR 22 north at I-605 - Seal Beach, CA

Interstate 405 South at Interstate 605 California State Route 22

I-405 south at I-605 - Long Beach, CA

Interstate 405 (San Diego Freeway) angles southeast from Willow Street in Long Beach to meet I-605 just across the San Gabriel River. 07/08/18

I-405 south at I-605 - Long Beach, CA I-405 south at I-605 - Long Beach, CA I-405 south at I-605 - Long Beach, CA I-405 south at SR 22 - Seal Beach, CA I-405 south at SR 22 - Seal Beach, CA I-405 south at I-605/SR 22 - 2003

South End – Past Views

Past Views Gallery (Tap to Expand / Collapse Section)

Interstate 405 North at Interstate 605

I-405 north at I-605 - 2004

Former button copy signs at the westbound separation of SR 22 and I-405, prior to the addition of HOV lanes. 11/14/04

I-405 north at I-605 - 2004 I-405 north at I-605 - 2004 I-405 north at I-605 - 2004

References

  1. Faigin, D.. (2026, March 23). Route 164. California Highways. Retrieved from https://www.cahighways.org/ROUTE164.html
Updated March 14, 2019