District 4 Environmental Documents by County
Jump to County: Alameda, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, Sonoma
Caltrans complies with its requirements under Title VI of the Civil Rights Act of 1964. More information can be found at this link: https://dot.ca.gov/programs/civil-rights/title-vi
District Wide Projects
State Route 37 Sears Point to Mare Island Improvement Project
Draft EIR/EA Volume 1 (PDF)
Draft EIR/EA Volume 2 (PDF)
The Final Environmental Impact Report/Environmental Assessment can be viewed here:
Final EIR/EA Volume 1
Final EIR/EA Volume 2 (Appendices A-J)
Final EIR/EA Volume 3 (Appendix K: Public and Agency Comments and Responses)
State Route 37 Flood Reduction Project From US 101 to SR 121 Junction
I-680 Express Lane Completion Project
Proposed Overview - As a major north-south freeway, I-680 is a heavily traveled corridor that connects the southern San Francisco Bay Area with Interstate 80 (I-80) and passes through Santa Clara, Alameda, Contra Costa and Solano counties. Within Contra Costa County, travelers experience congestion, traffic bottlenecks within the corridor, and increased travel times. To improve system continuity, congestion relief and operations, the project—part of CCTA’s INNOVATE 680 program—proposes to construct a northbound express lane from Livorna Road to State Route 242 (SR-242). It would also convert the existing northbound high-occupancy vehicle (HOV) lane that runs from SR-242 to the Benicia-Martinez Bridge Toll Plaza, to an express lane. The goal of the project is to complete the I-680 express lane network through Contra Costa County to increase travel speeds for those choosing to use the express lane.
The commenting period will be open from June 15, 2020 to July 29, 2020.
Alameda
I-680/Sunol Boulevard Interchange Improvements Project
- Draft Environmental Document (Initial Study with Proposed Mitigated Negative Declaration) (PDF)
Virtual public meeting
Wednesday, April 19, 2023
6:00 pm to 7:30 pm
Meeting link: https://us06web.zoom.us/j/86344957669
Or join by phone: +1 669 900 6833 or +1 669 444 9171
Webinar ID: 863 4495 7669
I-80/Ashby Interchange Project
- I-80/Ashby Avenue (SR-13) Interchange Improvements - Alameda CTC
- Initial Study with Proposed Mitigated Negative Declaration and Environmental Assessment
I-80/Gilman Interchange Project
State Route 84 Arroyo de la Laguna Bridge Project
- Environmental Impact Report/Environmental Assessment, Signed, with Errata Sheet - EA 04-0J550 / Project ID 0414000012 (pdf)
- EIR-EA Appendices (pdf)
I-580 and I-205 Roadside Safety Improvement Project
- Initial Study with Negative Declaration EA 04-4J940/ EFIS 0416000025
- Initial Study with Proposed Negative Declaration EA 04-4J940/ EFIS 0416000025
I-580 Safety Lighting Project
- Initial Study with Mitigated Negative Declaration EA 04-0K680/ EFIS 0416000125
- Initial Study with Proposed Mitigated Negative Declaration EA 04-0K680/ EFIS 0416000125
I-580 Storm Damage Permanent Restoration Project
- ALAMEDA COUNTY, CALIFORNIA, DISTRICT 4 – ALA – 580 (PM 4.3) 04-0P120/0417000401 The California Department of Transportation (the Department) proposes to restore the function of an existing storm drain system and preserve the structural integrity of the surrounding embankment and highway along Eastbound I-580 in Alameda County. Project scope includes the replacement of corrugated metal pipe, grading and shoring of the existing slope, and backfill of the eroded embankment at Postmile 4.3. The Department has provided a virtual project presentation that includes an opportunity to comment on the project in leu of a formal public meeting (see website link below). However, the Department will provide an opportunity for a formal public meeting if requested. All requests must be made by the May 11, 2021 deadline.
- 580 Storm Damage Permanent Restoration Project Initial Study – Proposed Mitigated Negative Declaration
- View the virtual project presentation
I-580 Bridge Rehabilitation Project
- Draft Environmental Document (Initial Study with Proposed Negative Declaration/ Environmental Assessment) (PDF)
- Recording of virtual public meeting from September 21, 2022 (YouTube)
- Information regarding this project can be found at the I-580 Bridge Rehabilitation Project website.
I-680 Alameda Creek Bridge Scour Repair Project
- Initial Study with Proposed Mitigated Negative Declaration
- Final Initial Study with Mitigated Negative Declaration (EA 0P910)
I-680 HOV/express lanes project
- FED (MND/FONSI) Initial Study with Mitigated Negative Declaration/Environmental Assessment with Finding of No Significant Impact
- Initial Study with Proposed Mitigated Negative Declaration/Environmental Assessment EA 04-0Q3000 / Project ID 0418000069
I-880 Interchange Improvements (Whipple Road-Industrial Parkway Southwest and Industrial Parkway West)
I-880 Interchange Improvements (Winton Avenue and A Street)
- Information regarding this project can be found at the Alameda County Transportation Commission website.
I-880 Oakland-Alameda Access Project (OAAP)
- Oakland Alameda Access Project-OAAP (EA 0G360) Environmental Document
- Oakland Alameda Access Project-OAAP (EA 0G360) Environmental Appendices
- Oakland Alameda Access Project-OAAP (EA 0G360) Environmental Appendices - Technical Studies
Dublin Boulevard Extension Project RTPL 5432(019)
Marin
State Route 1 Bridge Rail Replacement Project
- Draft Initial Study with Proposed Negative Declaration
- Draft State Route 1 Bridge Rail Replacement Project (04-0P960) – Evaluation of Potential Section 4(f) Resources and De Minimis Impact Determination
- Information regarding this project can be found at State Route 1 Bridge Replacement Project
State Route 1 (SR 1) Capital Preventive Maintenance (CAPM) Project
State Route 1 Culvert Replacement Project
State Route 37 Petaluma River Bridge Preservation Project
- Draft Section 4(f) Evaluation EA 04-2Q500/EFIS 0419000019
- Public Notice of Availability of Section 4(f) De Minimis Determination
- Initial Study with Proposed Negative Declaration EA 04-2Q500/ EFIS 0419000019
- Initial Study with Mitigated Negative Declaration 04-2Q500/0419000019
State Route 37 Capital Preventive Maintenance (CAPM) Pavement Project
- Initial Study with Negative Declaration EA 04-2K740/ EFIS 0417000018 (PDF)
- Initial Study with Proposed Negative Declaration EA 04-2K740/ EFIS 0417000018 (PDF)
U.S. 101 Irwin Creek Culvert Rehabilitation Project
U.S. 101 Storm Damage Repair Project
- Notice of Availability of a Section 4(f) De Minimis Determination for U.S. 101 Storm Damage Repair Project
- Draft U.S. 101 Storm Damage Repair Project (04-4J420) – Section 4(f) De Minimis
U.S. 101 Tamalpais Overcrossing Project
- Draft Initial Study with Proposed Negative Declaration EA 04-4J860/EFIS 0416000042
- Information regarding this project can be found at the Marin County U.S. 101 Tamalpais Overcrossing Project website.
Napa
State Route 29 Napa Bundle Northern Corridor Gas Pipeline Maintenance Program Project
- PG&E Napa Project Page
- Initial Study with Proposed Mitigated Negative Declaration
- Initial Study with Mitigated Negative Declaration EA 04-1W650/ID 0421000069
State Route 29 Bridge Rail Replacement Project
- Initial Study with Negative Declaration EA 04-0K630 / ID 0416000111
- Initial Study with Proposed Negative Declaration EA 04-0K630 / ID 0416000111
State Route 29 Sulphur Creek and York Creek Bridge Rail Replacement Project
State Route 29/State Route 221 Soscol Junction Improvement Project
State Route 29 Ritchie Creek Bridge Replacement Project for Fish Passage Improvement
- Initial Study with Mitigated Negative Declaration/Environmental Assessment with Finding of No Significant Impact
- 4J990 Ritchie Creek Public Meeting ADA Compliant Slides
- EA 04-4J990/EFIS 0416000037 Initial Study with Proposed Mitigated Negative Declaration/Environmental Assessment
State Route 121 Tulucay Creek Bridge Replacement Project
State Route 128 Hopper Slough Bridge Replacement Project
San Francisco County
Better Market Street Project
- Draft Environmental Assessment and Draft Section 4(f) Evaluation (PDF)
- Draft Environmental Assessment Appendices (PDF)
San Mateo
State Route 1 Safety Barriers Project
- State Route 1 Safety Barriers Project Final IS/ND
- State Route 1 Safety Barriers Project Draft IS/MND
- Public virtual open house information and project overview
State Route 1 Pescadero Creek Bridge Rails
- 4j870 Signed Initial Study with Negative Declaration
- Draft Environmental Document (Initial Study with Proposed Negative Declaration) EA: 04-4J870 EFIS: 0416000029
- Public Notice Notice of Availability of a Section 4(F) De Minimis Determination for Pescadero Creek Bridge Rails Project
- Draft Pescadero Creek Bridge Railing Replacement Project Evaluation of Potential Section 4(F) Resources And De Minimis Impact Determination
State Route 1 Traffic Operational Systems Improvements Project
- State Route 1 Traffic Operational Systems Improvements Project Final Initial Study with Proposed Negative Declaration EA 04 2K880/ Project ID 417000040
- State Route 1 Traffic Operational Systems Improvements Project Recirculated Draft Initial Study with Proposed Negative Declaration EA 04‑2K880/ Project ID 417000040
- Public Virtual Open House Information for State Route 1 Traffic Operational Systems Improvements Project
- April 8, 2021 Public Meeting Presentation Slides
State Route 1 Multi-Asset Roadway Rehabilitation Project
- Initial Study with Negative Declaration
- Draft Initial Study with Proposed Negative Declaration
- Public Meeting Slides (PDF)
- Video of Public Meeting - July 21, 2022
State Route 1/State Route 84 Structures and Scour Mitigation
- FINAL Initial Study with Proposed Mitigated Negative Declaration
- DRAFT Initial Study with Proposed Mitigated Negative Declaration EA 04-2J790 / Project ID 04-1500-0014
- 1 & 84 Mitigation Project Flyer
- Public Meeting Video
State Route 82 El Camino Real Roadway Renewal Project
- Draft Environmental Impact Report/Environmental Impact Statement and Draft Section 4(f) Evaluation
- Appendices
- Final Environmental Impact Report/Environmental Impact Statement, Final Section 4(f) Evaluation, and Record of Decision
- Appendices A-G
- Appendix H
- Appendix I
- Appendix J
- Appendix K
- Environmental Scoping Website
- Final Environmental Document and Project Archive
State Route 84 Storm Damage Permanent Restoration Project
US 101/Produce Avenue Interchange Project
- Draft Environmental Impact Report/Environmental Assessment
- Notice of Completion and Online Public Meeting Information
- How to join the August 11, 2022 virtual public meeting
- Final Environmental Impact Report/Environmental Assessment with Finding of No Significant Impact
U.S. 101 Cordilleras Creek Bridge Replacement Project
- Initial Study with Mitigated Negative Declaration and Environmental Assessment with Finding of No Significant Impact
- Initial Study with Proposed Mitigated Negative Declaration and Environmental Assessment EA 04-2J730/ EFIS 0415000004
- 101 Cordilleras Creek Bridge Project Flyer
I-280/I-380 Bridge Seismic Restoration Project: (Alpine Road Undercrossing Bridge, Sand Hill Road Overcrossing Bridges, and Interstate-280/Interstate-380 Separation Bridges)
- Final Environmental Document EA 04- 4J850; Project ID 04-1600-0028
- Signed Draft Environmental Document EA 04- 4J850; Project ID 04-1600-0028
Santa Clara
State Route 9 Saratoga Creek Bridge
Newell Road Bridge Replacement Project
Solano
State Route 12 Roadway Resurfacing, Restoration and Rehabilitation Project
State Route 12 Major Pavement Rehabilitation (2R) Project
- Initial Study with Proposed Mitigated Negative Declaration
- Initial Study with Mitigated Negative Declaration
State Route 84 Real McCoy Fenders and Ramps Replacement Project
- Initial Study with Proposed Mitigated Negative Declaration/Environmental Assessment
- Initial Study with Mitigated Negative Declaration/Environmental Assessment with Finding of No Significant Impact June 2022
- Information regarding this project can be found at the State Route 84 Real McCoy Fenders and Ramps Replacement Project website
State Route 128 Putah Creek Bridge Rehabilitation
- Initial Study with Proposed Negative Declaration
- Evaluation of Potential Section 4(f) Resources and Preliminary De Minimis Impact Determination
- Initial Study with Negative Declaration
- Evaluation of Potential Section 4(f) Resources and Final De Minimis Impact Determination
Sonoma
State Route 116 – Stage Gulch Road/Lakeville Highway Intersection Safety Project
- Draft Initial Study with Proposed Negative Declaration EA 04-2Q770
- Initial Study with Negative Declaration
State Route 1 Drainage System Restoration Project
State Route 1 Drainage System Restoration Project
State Route 1 Soldier Pile Wall Project
- Initial Study with Mitigated Negative Declaration EA#: 04-0J300 EFIS#: 041300043
- Initial Study with Proposed Mitigated Negative Declaration EA#: 04-0J300 EFIS#: 0413000433
- Evaluation of Potential Section 4(f) Resources and De Minimis Impact Determination
State Route 1 Culvert Rehabilitation Project – North
- October 2020 – Initial Study with Negative Declaration 1K750/0416000309
- 1K750 – Section 4(f) Determination
- February 2020 - Initial Study with Proposed Negative Declaration
State Route 1 Culvert Rehabilitation Project – South
- Initial Study with Negative Declaration 04-1K730/0416000307
- June 2019 - Initial Study with Proposed Negative Declaration 1K730/0416000307
- 1k730_Section_4(f)_Evaluation_20200304
- Public Notice
State Route 1 Culvert Rehabilitation Project
- State Route 1 Culvert Rehabilitation Project Sonoma County, California District 4 – SON – 1 (PM 19.25/PM 21.84) 04-1Q340/041000242
- Draft State Route 1 Culvert Rehabilitation Project (04-1Q340) – Evaluation of Potential Section 4(f) Resources and De Minimis Impact Determination
State Route 1 Centerline Rumble Strip Project
State Route 12 Capital Preventive Maintenance Project
- Initial Study with Mitigated Negative Declaration EA# 04-0K520 EFIS#: 0416000098
- Initial Study with Proposed Mitigated Negative Declaration EA# 04-0K520 EFIS#: 0416000098
- Notice of Intent to Adopt a Mitigated Negative Declaration and Notice of Availability of the Initial Study with Proposed Mitigated Negative Declaration
State Route 12 Boas Drive Intersection Safety Project
- Initial Study with Proposed Negative Declaration (PDF)
- Initial Study with Negative Declaration (PDF)
U.S. 101 Santa Rosa U.S. Highway 101 Bicycle and Pedestrian Overcrossing
- Initial Study Santa Rosa Highway 101 Final ED 1.29.21 ADA compliant
- Initial Study with a Proposed Mitigated Negative Declaration 04-2G340/0413000213
- Audio recording of Zoom Public Meeting in Spanish (Pending)
- Video recording of Zoom Public Meeting in English with sign-language interpretation
- Video slideshow presentation with English narration and captions
- Video slideshow presentation with Spanish narration
State Route 116 Slide Repair Project
- Draft Initial Study with Proposed Negative Declaration
- Initial Study with Negative Declaration 2K360