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U.S. Highway 101 Cordilleras Creek Bridge Replacement Project SAN MATEO COUNTY, CALIFORNIA U.S

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U.S. Highway 101 Cordilleras Creek Bridge Replacement Project SAN MATEO COUNTY, CALIFORNIA U.S U.S. Highway 101 Cordilleras Creek Bridge Replacement Project SAN MATEO COUNTY, CALIFORNIA U.S. 101, PM 7.13 EA 04-2J730/ EFIS 0415000004 Initial Study with Proposed Mitigated Negative Declaration and Environmental Assessment Prepared by the State of California, Department of Transportation The environmental review, consultation, and any other actions required by applicable Federal environmental laws for this project are being, or have been, carried out by Caltrans pursuant to 23 USC 327 and the Memorandum of Understanding dated December 23, 2016, and executed by ,.FHWA and Caltrans.. lbJtmns~ July 2020 This page intentionally left blank General Information about This Document What’s in this document: The California Department of Transportation (Caltrans), as assigned by the Federal Highway Administration (FHWA), has prepared this Initial Study / Environmental Assessment (IS/EA), which examines the potential environmental impacts of the proposed project located in San Mateo County, California. Caltrans is the lead agency under the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). The document explains why the project is being proposed, what alternatives have been considered for the project, and how the existing environment could be affected by the project. It also describes the potential impacts of each of the alternatives, and proposed avoidance, minimization, and/or mitigation measures. What you should do: • Please read this IS/EA. • This IS/EA may be downloaded at the following website: https://dot.ca.gov/caltrans- near-me/district-4/d4-popular-links/d4-environmental-docs. Copies of this IS/EA and related technical studies are available upon request. For request email John Seal at [email protected] or Zachary Gifford by phone at 510-506-1264. • As a result of the COVID-19 emergency, the California Governor’s Executive Orders N-33-20 and N-60-20, and San Mateo County’s Order No. c19-5f, Caltrans is conducting public meetings via remote presence by video and teleconference to protect public health and safety. Participate in a public meeting on August 13, 2020. Meeting information, including links to the online meeting and call-in numbers, will be available at https://dot.ca.gov/caltrans-near-me/district-4/d4-popular-links/d4-environmental- docs. • We’d like to hear what you think. If you have any comments about the proposed project, please participate in the public meeting and/or send your written comments to Caltrans by the deadline. o Send comments via email to: [email protected]. o Send comments via postal mail to: Department of Transportation, District 4 Attn: John Seal, P.O. Box 23660 MS 8B, Oakland, CA 94623-0660 • Be sure to send comments by the deadline: August 31, 2020. What happens next: After comments are received from the public and reviewing agencies, Caltrans, as assigned by the FHWA, may: (1) give environmental approval to the proposed project, (2) do additional environmental studies, or (3) abandon the project. If the project is given environmental approval and funding is obtained, Caltrans could design and construct all or part of the project. Alternative Formats: For individuals with sensory disabilities, this document can be made available in Braille, in large print, on audiocassette, or on computer disk. To obtain a copy in one of these alternate formats, please call or write to Department of Transportation, Attn: John Seal, P.O. Box 23660 MS 8B, Oakland, CA, 94623-0660, e-mail [email protected], or Zachary Gifford at 510- 506-1264 (Voice), or use California Relay Service 1 (800) 735-2929 (TTY to Voice), 1 (800) 735-2922 (Voice to TTY), 1 (800) 855-3000 (Spanish TTY to Voice and Voice to TTY), 1- 800-854-7784 (Spanish and English Speech-to-Speech) or 711. SCH: _________ 04-SM-101PM 7.13 EA 04-2J730K Project ID 0415000004 Reconstruct Cordilleras Creek Bridge on US Highway 101 (US 101) in the City of Redwood City in San Mateo County at Post Mile (PM) 7.13 Initial Study with Proposed Mitigated Negative Declaration/Environmental Assessment Submitted Pursuant to: (State) Division 13, California Public Resources Code (Federal) 42 USC 4332(2)(C), 49 USC 303, and/or 23 USC 138 THE STATE OF CALIFORNIA Department of Transportation Cooperating Agencies: U.S. Army Corps of Engineers, National Marine Fisheries Service, San Francisco Bay Conservation and Development Commission, California Department of Fish and Wildlife, San Francisco Bay Regional Water Quality Control Board, Federal Highway Administration, United States Fish and Wildlife Service Responsible Agencies: California Transportation Commission 07/18/2020 Lindsay Vivian Date Office Chief Office of Environmental Analysis Caltrans District 4 The following persons may be contacted for more information about this document: John Seal Department of Transportation, District 4 P.O. Box 23660 MS 8B Oakland, CA 94623-0660 [email protected] or Zachary Gifford [email protected] 510-506-1264 This page intentionally left blank SCH: __________ Proposed Mitigated Negative Declaration Pursuant to: Division 13, Public Resources Code Project Description The California Department of Transportation (Caltrans) proposes to replace the existing Cordilleras Creek Bridge on United States Highway 101 (U.S. 101) at post mile 7.13 in Redwood City in San Mateo County. Determination This proposed Mitigated Negative Declaration (MND) is included to give notice to interested agencies and the public that it is Caltrans’ intent to adopt a MND. This does not mean that the Caltrans decision regarding the project is final. This MND is subject to change based on comments received by interested agencies and the public. Caltrans has prepared an Initial Study for this project and, pending public review, expects to determine from this study that the proposed project would not have a significant effect on the environment for the following reasons: • The proposed project would have no effect on agricultural lands and forest resources, mineral resources, population and housing, tribal cultural resources, land use and planning, paleontology, and recreation. • The proposed project would result in a less than significant impact on aesthetics, air quality, energy, geology and soils, greenhouse gas emissions, hazards and hazardous materials, hydrology and water quality, noise, public services, transportation and traffic, utilities and service systems, and wildfire. • With standard conservation measures, avoidance and minimization measures, and mitigation measures, the proposed project would have a less than significant impact on biological resources and wetlands. Mitigation measures are needed to reduce the potential for potentially unavoidable significant impacts to occur. Melanie Brent Date of Approval Deputy District Director Environmental Planning and Engineering California Department of Transportation District 4 This page intentionally left blank Summary Summary The California Department of Transportation (Caltrans) proposes to replace the existing Cordilleras Creek Bridge (Bridge #35-0019) located on United States Highway 101 at post mile (PM) 7.13 in the City of Redwood City in San Mateo County. The project is near the boundary of the City of San Carlos. The purpose of the project is to maintain connectivity and a safe highway facility for the traveling public along U.S. 101 by replacing the existing deteriorated bridge over Cordilleras Creek. The existing bridge is at the end of its service life and in need of replacement. The proposed project includes two Build Alternatives and would include the following: • Replace the existing bridge with a new bridge that also consists of a triple-box culvert. The culverts would be 10 × 10 feet in size; the existing culverts are 8 × 10 feet (Alternative 1). Alternative 2 would consist of replacing the existing bridge with a single-span bridge (Alternative 2). • Replace the existing drainage system. • Construct new retaining wall on the southbound side. • Implement a minor reconfiguration of Cordilleras Creek. • Replace Median Barrier Guard Rails (MBGR) with Midwest Guard Rails (MGS). • Replace existing vehicle detector loops. • Install safety lighting in the median. • Add new riprap along Cordilleras Creek on the east side of the bridge. The proposed project is needed because the existing bridge will remain and continue to deteriorate, and because structural conditions, if not addressed, would affect the structural integrity and ultimately the safety of the traveling public. NEPA Assignment California participated in the “Surface Transportation Project Delivery Pilot Program” (Pilot Program) pursuant to 23 United States Code (USC) 327, for more than 5 years, beginning July 1, 2007, and ending September 30, 2012. The Moving Ahead for Progress in the 21st Century Act (MAP-21; P.L. 112-141), signed by President Barack Obama on July 6, 2012, amended 23 USC 327 to establish a permanent Surface Transportation Project Delivery Program. As a result, Caltrans entered into a Memorandum of Understanding (MOU) pursuant to 23 USC 327 (National Environmental Policy Act [NEPA] Assignment MOU) with the Federal Highway Administration (FHWA). The NEPA Assignment MOU became effective October 1, 2012, and was renewed on December 23, 2016, for a period of 5 years. In summary, Caltrans continues to assume FHWA responsibilities under NEPA and other federal environmental laws in the same manner as was assigned under the Pilot Program, with minor changes. With NEPA Assignment, FHWA assigned and Caltrans assumed all
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