Maxwell Bridge Replacement Project
4 Documents in Project
Summary
SCH Number
1999122033
Lead Agency
California Department of Transportation, District 4
Document Title
Maxwell Bridge Replacement Project
Document Type
NOD - Notice of Determination
Received
Posted
3/28/2002
Present Land Use
Mixed Use Commercial and Industrial
Document Description
Caltrans and the City of Napa will replace the existing Maxwell Bridge , an existing vertical lift bridge, with a new four lane, fixed skyway bridge, twin span, immediately upstream of the existing bridge. Each span will be approximately 528 meters long and 13.57 meters wide and will support two lanes of traffic, and emergency shoulder, and pedestrian and bicycle traffic. Prior to the work on the new or existing bridge an existing low-pressure sewer foce main, which runs under the Napa River, will need to be relocated to accommodate the new bridge piers. The new force main will be relocated approximately 30-40 meters north of its existing location. The new 24" force main will be installed under the Napa River using either a microtunneling technique or horizontal directional drilling. The existing bridge will remain in operation until traffic is shifted onto the first of the twin bridges at which time it will be demolished by dismantling its steel segments with saws or cutting torches. The freed segments will be removed by a crane or lowered onto barges in the River and taken to salvage or disposal facilities. At this point the eastern embankment will be removed and the floodplain will be excavated. The second span will then be constructed, and the existing river piers and footings from the old bridge will be removed. The pilings that the old footings rest on will be cut off below the channel bottom. Work within the river on the new bridge will consist of the construction of new columns to support the bridge structure. The column foundations are anticipated to be constructed using sheet pile coffer dams.
Contact Information
Name
Fred Botti
Agency Name
Department of Fish and Game
Contact Types
Lead/Public Agency
Address
Phone
Location
Cities
Napa
Counties
Napa
Cross Streets
Imola Avenue between Gasser and Coombs
Parcel #
005-171-10/13/17, 005-180-07
State Highways
121
Railways
Napa Valley Wine Train
Schools
Napa Valley College
Waterways
Napa River
Notice of Determination
Approving Agency
Department of Fish and Game
Approving Agency Role
Responsible Agency
Approved On
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
N/A
(4) A mitigation reporting or monitoring plan was adopted for this project
N/A
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above.