East Los Angeles Interchange Complex
Golden State Freeway
Santa Ana Freeway
Santa Ana Freeway
Santa Monica Freeway
San Bernardino Freeway
World’s Busiest Freeway Interchange
More than 430,000 vehicle pass through this interchange daily.
Overview of the East Los Angeles Interchange from a USGS topographical map. There is a small error on this map denoting the San Bernardino Freeway west of I-5 as SR-10. It is in fact Route 10, not really a part of I-10 but not a State Sign route.
San Bernardino Split. The purple line marks the El Monte Busway. The flyover ramp from I-10 West to US 101 South, originally constructed in 1955, was removed in 1995 due to the redundancy of the same connection at the I-5 / I-10 junction and seismic retrofit. SR-10 is an error, it reflects Route 10, not I-10. I-5 / I-10 Junction.
I-5 / I-10 Interchange. Purple areas east of I-5 mark the area of I-10 that was reconstructed in the early 1970’s. The purple line west of I-5 marks the El Monte Busway.
Main East Los Angeles Interchange. The Santa Ana Freeway (US 101 and I-5) is the only roadway that flows all the way through this interchange without the use of ramps.
Interchange Diagram from the California Division of Highways.
ACSC map from 1958 showing the I-5 / I-10 interchange.
Map showing the beginnings of the modern interchange. Dates to 1959.
San Bernardino Split and I-5 / I-10 Junction in 1959.
Location of the East Los Angeles Interchange in 1959.
Ramps shown as proposed leading from US 101 at Marietta Street to 8th Street were to be the beginning of the Olympic Parkway. These ramps were never constructed. However, the underpass from North US 101 to westbound Olympic Parkway was constructed in 1948. It remained a bridge over nothing for many years until 1962. Traffic from Westbound SR-60 to Westbound I-10 now use the underpass. I-10 is the modern construction of what was to be the Olympic Parkway so, it may have took many years, but the bridge finally is used for the purpose it was designed for.
Photographs of the East Los Angeles Interchange – New and Old.
1999 Aerial photo of the East Los Angeles Interchange. Courtesy – Caltrans
Oblique aerial view of the East Los Angeles Interchange. Taken by the Division of Highways on October 30, 1961. Connections to SR-60 have been built but aren’t in use. They won’t be until 1965. The ramps to I-10 opened in 1962.
Oblique aerial view westerly along under-construction I-10 Santa Monica Viaduct. Photo was taken by the Division of Highways on December 7, 1960. Bridges over the Los Angeles River were completed earlier in 1959 in a separate contract.
Oblique aerial view easterly along the mostly-completed I-10 Santa Monica Viaduct. Photo was taken by the Division of Highways on September 16, 1961. Viaduct is still under construction west of Alameda Avenue. Loop ramp visible at center connects eastbound Olympic Blvd to eastbound traffic heading to the East Los Angeles Interchange.
I-10 ramps over the Los Angeles River. This bridge connects I-10 westbound (right) and I-5 southbound (left) with Mateo Street and Santa Fe Avenue. Mainline I-10 runs on the bridge to the right. Vehicles visible on the bridge to the right just left I-5 southbound.
View from the onramp to 10 westbound from Soto Street. Ramp is in the foreground. Ramps from 10 eastbound are in the left background. Closest ramp connects I-5 southbound to the Santa Ana Freeway (I-5) southbound.
Old overpass built for the Olympic Parkway in 1948. US 101, now I-5, travels over the bridge. The bridge had only dirt beneath it until 1961 when the ramps from the Pomona Freeway were built here. Traffic from SR-60 westbound to I-10 westbound now passes through here.
Westbound along SR-60 approaching the East Los Angeles Interchange. There is no direct connector from 60 west to 5 south. To get there, signs direct travelers to I-710 southbound.
Beginning of the Golden State Freeway at 6th Street / Whittier Blvd. Traffic entering from the right is coming from the northbound Santa Ana Freeway (I-5) and westbound Pomona Freeway (SR-60). Traffic at left is coming from eastbound Santa Monica Freeway (I-10).
Eastbound Pomona Freeway split to US 101 northbound, I-5 northbound, and Soto Street. I-10 eastbound traffic has already split off.
Signage for the onramps from Soto Street north of 8th Street. Ramp in background is the connector from I-10 eastbound to I-5 southbound. Onramp to SR-60 eastbound is the first exit on the right.
Santa Ana Freeway split with US 101, I-5, and I-10
5 North at the 10 West split
5 North Connector at the 60 West connection
10 eastbound at Santa Fe Avenue. Signage here shows both I-5 and I-10 co-signed over the Golden State Freeway.
5 North at the 10 East
Sign plans from 1965 showing the removal of US 99 North and US 101 South from the East Los Angeles Interchange.
Sign plans from 1965 showing the removal of all the US routes except US 101 on the Santa Ana Freeway from Route 10 to I-5.
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