What Is 6th Street, Los Angeles

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Last updated: April 17, 2026

Quick Answer: 6th Street in Los Angeles is a major east-west thoroughfare stretching approximately 6 miles from downtown LA to the Pacific Coast Highway. It passes through diverse neighborhoods including Boyle Heights, Echo Park, and Santa Monica, and is home to the historic 6th Street Viaduct, rebuilt and reopened in 2022 after a $58.9 million project.

Key Facts

The 6th Street Viaduct spans the Los Angeles River and was completed in July 2022
Original viaduct opened in 1932 and was decommissioned due to seismic instability
New bridge cost $58.9 million and is designed to last 100 years
6th Street runs approximately 6 miles from Santa Monica Boulevard to Soto Street
The corridor passes through 5 distinct neighborhoods including Echo Park and Boyle Heights

Overview

6th Street in Los Angeles is a significant east-west arterial road that spans approximately 6 miles, beginning near Soto Street in Boyle Heights and extending westward to Santa Monica Boulevard in West LA. It serves as a critical connector between downtown Los Angeles and coastal communities, traversing diverse cultural and economic zones including MacArthur Park, Echo Park, and Pico-Union.

The most iconic feature along this corridor is the 6th Street Viaduct, which crosses the Los Angeles River and connects Boyle Heights with downtown. After decades of deterioration, the original 1932 bridge was demolished and replaced with a modern, seismically resilient structure that reopened in July 2022, marking one of the city’s largest infrastructure projects in recent years.

Length: The full stretch of 6th Street covers roughly 6 miles from Soto Street to Santa Monica Boulevard, serving as a continuous urban connector.
Historic Viaduct: The original 6th Street Viaduct opened in 1932 and was a signature example of open-spandrel concrete arch bridge design.
Replacement Project: The new $58.9 million viaduct was constructed to meet modern earthquake standards and is expected to last 100 years.
Neighborhoods Crossed: The street passes through at least five distinct communities, including Boyle Heights, Echo Park, Westlake, and Santa Monica.
Transportation Role: It carries over 40,000 vehicles daily, making it a vital route for commuters and commercial traffic.

How It Works

The functionality of 6th Street as a transportation corridor relies on engineering, urban planning, and ongoing maintenance to support its high traffic volume and structural integrity. Each component of the viaduct and roadway system is designed for durability, safety, and accessibility.

Seismic Design: The new 6th Street Viaduct incorporates base isolators that allow it to move during earthquakes, significantly reducing structural stress.
Construction Timeline: Demolition of the old bridge began in 2016, with full reopening achieved in July 2022 after six years of construction.
Material Use: Over 12,000 cubic yards of concrete and 1.2 million pounds of steel were used in the new viaduct’s construction.
Bicycle Infrastructure: The rebuilt bridge includes a 12-foot multi-use path for cyclists and pedestrians, enhancing non-motorized transit options.
Art Integration: Public art installations, including light sculptures and murals, are embedded into the viaduct’s design as part of 1% for Art program funding.
Traffic Flow: The roadway supports four lanes of traffic, with dedicated turn lanes and signals to manage intersections efficiently.

Comparison at a Glance

Below is a comparison of the original and new 6th Street Viaducts:

Feature	Original Viaduct (1932)	New Viaduct (2022)
Length	3,500 feet	3,500 feet
Design Life	75 years (exceeded)	100 years
Seismic Rating	Low – vulnerable to collapse	High – base isolators installed
Lanes	4 lanes, no bike path	4 lanes + 12-foot shared path
Construction Cost	$1.5 million (1932)	$58.9 million (2022)

The new viaduct preserves the original alignment and length but dramatically improves safety, accessibility, and aesthetics. While the original structure was a product of early 20th-century engineering, the replacement reflects modern priorities like sustainability, resilience, and community engagement. The addition of bike lanes and public art reflects a broader shift toward multimodal urban infrastructure.

Why It Matters

The redevelopment of 6th Street, particularly the viaduct, symbolizes LA’s commitment to upgrading aging infrastructure while integrating equity and sustainability. Its impact extends beyond transportation to influence economic development, public safety, and cultural identity.

Public Safety: The new bridge eliminates the risk of collapse during a major earthquake, protecting thousands of daily commuters.
Economic Boost: Construction created over 500 jobs, and improved access supports local businesses along the corridor.
Transit Equity: The inclusion of bike lanes promotes alternative transportation in historically underserved neighborhoods.
Urban Connectivity: The viaduct reconnects Boyle Heights and downtown, which were physically and socially fragmented during the old bridge’s decline.
Environmental Standards: The project met LEED Gold certification criteria for sustainable construction and stormwater management.
Cultural Impact: The bridge has become a landmark, hosting events and serving as a backdrop for film and photography.

6th Street remains a vital artery in Los Angeles, evolving from a Depression-era infrastructure project to a modern symbol of urban renewal. Its transformation reflects broader citywide efforts to build resilient, inclusive, and forward-thinking public works.