Posts tagged with "L.A. River":
From anti-flood measures to ecology, see what the L.A. Bureau of Engineering has in store for the L.A. River
Gary Lee Moore is the city engineer with the Los Angeles Bureau of Engineering, one of the many organizations and agencies involved in the ongoing restoration and redevelopment of the Los Angeles River. Among the numerous river-related projects on which the bureau is currently working are the restoration of an 11-mile run of the river within city limits and the replacement of the Sixth Street Viaduct with new designs by Michael Maltzan Architecture.
The Architect’s Newspaper: What role does the L.A. Bureau of Engineering play in facilitating the ongoing L.A. River restoration process?
Gary Lee Moore: The Bureau of Engineering (BoE) has a long history of working on the Los Angeles River. We led the development of the L.A. River Revitalization Master Plan, passed by the Los Angeles City Council in 2007, and were assigned the responsibility of implementing the plan, which continues today. BoE also led the city’s collaboration with the United States Army Corps of Engineers on the development of the Los Angeles River Ecosystem Restoration Feasibility study and the Alternative with Restoration Benefits and Opportunities for Revitalization (ARBOR) study that recommended Alternative 20 (the policy recommendation that called for the most expansive level of restoration for the river). Alternative 20 was adopted by the city council in June 2016 and is pending approval in Congress. BoE is also managing a variety of significant L.A. River projects that include new bikeways, river-adjacent parks, bridges that cross the river, and bridge underpasses, as well as restored river-access points and existing bridges. For our regional colleagues who are also focusing on river revitalization, BoE has been the city’s point of collaboration. This includes a variety of nonprofits and other public agencies.
How does the L.A. River restoration feed into the BoE’s overall mission?
BoE’s vision is to transform Los Angeles into the world’s most livable city. Revitalization of the Los Angeles River corridor, with public access, open space, native ecosystem restoration, and world-class parks, will contribute to creating a more livable, more sustainable Los Angeles.
What are some of the approaches being taken with regard to maintaining the river’s usefulness as a piece of flood control infrastructure for the region?
The ARBOR study assumed that current levels of flood protection would be maintained with the suggested changes to the river. For example, this means increasing the flood channel’s capacity where planting is suggested in the channel for habitat creation.
Which measures are being taken to guide forthcoming development along the L.A. River toward having a more positive relationship with the local hydrology and ecology (in terms of runoff, infiltration, sewage, etc.)?
The city established a citywide Low Impact Development ordinance in 2012 that requires on-site capture or infiltration and a dispersed approach to stormwater management that positively diverts it to the L.A. River.
In addition, recent projects done by the city along the L.A. River have been designed to direct stormwater into vegetated swales. The River Improvement Overlay (RIO) guidelines produced by the Department of City Planning in 2014 provide private property owners along the river with design approaches that reflect habitat sensitivity.
In terms of ecology, the city uses Los Angeles County’s L.A. River Master Plan Landscaping Guidelines and Plant Palettes, published in 2004, which calls for a native L.A. River plant palette all along the river. This palette was identified to support local fauna and to restore the native landscape.
2016 has been big for the Los Angeles River’s ongoing restoration process, as several of the multi-agency, intragovernmental urban water infrastructure projects surrounding its redevelopment have begun implementation.
The 51-mile-long concrete channel currently known as the L.A. River was created in 1938 as a flood control measure, and has been the site of steadily growing public interest for decades. Activist groups started gathering around the idea of river as a social justice cause for the city back in the 1980s, exploring its hidden potential for creating an urban oasis. River-focused landscape architects like Mia Lehrer and organizations like Friends of the Los Angeles River (FoLAR), founded in 1986 by poet, filmmaker, and writer Lewis MacAdams, have been at the forefront of river advocacy for years and are responsible for keeping the river in the public eye. But suddenly, the project has gained international notoriety both as the poster child for the post-World War II era’s ham-handed approach to urban hydrology, and, crucially, as an urban project the success of which could rewrite the future of America’s second-largest city.
In 2004, the City of Los Angeles founded a nonprofit group, L.A. River Revitalization Corporation, to wrangle the ever-growing constellation of river-related programs, and ultimately hired Frank Gehry and Associates, landscape firm OLIN, and Geosyntec Consultants to create a master plan. The team is currently in the midst of working through the initial study phases and has held a handful of community meetings across the region to discuss on-the-ground concerns and to gather ideas, in the process creating the L.A. River Index, an online resource for sharing information with the public. A preview of the L.A. River VR Experience, an initiative by media producers Camilla Andersson and Anders Hjemdahl at Pacific Virtual Reality and FoLAR, was released on October 8, timed with the organization’s 30th anniversary. The project is currently in the final stages of production and features a VR tour along the entire LA River.
Additionally, Gruen Associates, Mia Lehrer Associates, and Oyler Wu Collaborative were recently selected to design bike paths across the river’s length in the San Fernando Valley. Their project will link to the existing, popular path along the river running through the Frogtown neighborhood just north of Downtown Los Angeles. That particular area has been the site of highly partisan anti-gentrification battles, as the development community quickly began to take note of an impending windfall if the river becomes a desirable location. Housing projects have begun to sprout up around this neck of the river, which is surrounded by a mix of sleepy residential and industrial areas. A forthcoming project by Rios Clementi Hale Studios aims to bring 419 apartments, 39,600 square feet of ground-floor retail space, and 18 acres of open space to a river-adjacent site.
In Downtown Los Angeles, Michael Maltzan Architecture (MMA) is working toward beginning construction on their new vision for the Sixth Street Viaduct. The project will replace a structurally compromised bridge from 1932 currently under demolition. MMA aims to work in parallel with the bridge’s demolition, starting construction at the recently demolished eastern banks of the river and moving in the path of the old bridge. That project, a partnership with the City’s Bureau of Engineering, is being designed explicitly to facilitate community access to the river along both banks, and is due to be completed in 2019.
Whether it’s online, in virtual reality, or along the newly permeable banks of a beautified L.A. River, one thing is sure: L.A.’s River is changing very, very quickly.