Plan-Redwood_Rd_MPM_5.41.pdf

PDF 3 MB Posted

Attached to
Redwood Rd MPM 5. 41
Solicitation number
RDS 26-22
Issued by
Napa County, California

About this file

This is an engineering plan document for the County of Napa related to the Redwood Road MPM 5.41 storm repair project in California. The project addresses damage from November 2025 storms that caused a landslide undermining approximately 33 linear feet of roadway edge, resulting in unsupported asphalt and a steep drop to a private driveway. To ensure road stability and public safety, the project proposes installation of a rock slope protection (RSP) buttress along the downhill shoulder of Redwood Road constructed at a 1:1 slope, approximately 10 feet high, and averaging 5 feet in thickness. Following RSP installation, the damaged road surface will be reconstructed or repaved over approximately 100 linear feet. The project includes roadway reconstruction from station 0+40 to station 1+40, with pavement sections consisting of 5 inches of HMA Type A and 8 inches of AB Class 2 base course. The engineering plans, prepared by ADKO (with engineer Majdi M. Kanaan, Professional Engineer No. C050238, expiring June 30, 2027), include profile views, cross-sections at multiple stations, pavement section details, and temporary traffic control plans.

The project specifications require geotextile material (Mirafi 500X or approved alternative) placed between existing soil and rip rap layer, with rip rap meeting Caltrans Class V or VI specifications placed by Method A. Excavation at the perimeter of the slide area is to be field-determined. Temporary traffic control measures require maintaining one full travel lane at all times with a minimum 9-foot-wide roadway for emergency vehicles and maintaining local access. The contractor is required to post two variable electronic message sign boards one week prior to construction, install temporary traffic control signals when reducing to one-lane traffic, and comply with the current California Manual on Uniform Traffic Control Devices (MUTCD) standards as approved by the County Traffic Engineer. The contractor must provide a separate traffic control plan for county review and approval.

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Other files

File Type Posted
Redwood_Rd_MPM_5.41.pdf PDF
Specifications-Redwood_Rd_MPM_5.41.pdf PDF
Sample_Construction_Contract.docx DOCX document
Sample_Napa_County_Bid_Bond_Form.pdf PDF
Sample_Payment_and_Performance_Bonds.docx DOCX document

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Text version

SHEET TITLE

PROJECT TITLE

REDWOOD ROAD MPM 5.41

LA

HH

02/15/2026

AS SHOWN

MK

130 DIAMOND CREEK PLACE

ROSEVILLE, CA 95747

(916) 788-0100

(916) 788-0159 (FAX)ENGINEERING

PROFILE VIEW

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AutoCAD SHX Text PLOT DATE:2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGFILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGC:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG

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EXP. 6-30-27

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MAJDI M. KANAAN

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ROAD PROFILE SCALE 1"=10'

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PROFILE LEGEND (E) GRADE PURPOSED GRADE

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1'-0" CONFORM GRINDCONFORM GRIND

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SAWCUT

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TYPICAL ROAD LONGITUDINAL CONFORM SCALE: NTS

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OG

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(E) WALLWALL

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(E) DRIVEWAYDRIVEWAY

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LINE EXISTING DITCH WITH 2" ASPHALT

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GEOTEXTILE (SEE NOTE #1)

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2025 EXISTING SLIDE

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PAVEMENT SECTIONS

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OG PROPOSED ROADWAY RECONSTRUCTION RSP

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5" HMA (TYPE A) 8" AB (CLASS 2)

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SECTION A-A SCALE 1"=5'

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RECONSTRUCTION FROM STA 0+40 TO STA 1+40

1. GEOTEXTILE TO BE MIRAFI 500X OR APPROVED ALTERNATIVE. PLACE BETWEEN EXISTING SOIL AND RIP RAP LAYER. GEOTEXTILE TO BE MIRAFI 500X OR APPROVED ALTERNATIVE. PLACE BETWEEN EXISTING SOIL AND RIP RAP LAYER. 2. RIP RAP SHALL BE CALTRANS CLASS V OR VI PLACED BY METHOD A. RIP RAP SHALL BE CALTRANS CLASS V OR VI PLACED BY METHOD A. 3. EXCAVATION AT PERIMETER OF SLIDE AREA TO BE FIELD DETERMINED.EXCAVATION AT PERIMETER OF SLIDE AREA TO BE FIELD DETERMINED.

REDWOOD ROAD MPM 5.41

LA

HH

02/15/2026

AS SHOWN

MK

130 DIAMOND CREEK PLACE

ROSEVILLE, CA 95747

(916) 788-0100

(916) 788-0159 (FAX)ENGINEERING

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AutoCAD SHX Text PLOT DATE:2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGFILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGC:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG

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EXP. 6-30-27

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REDWOOD ROAD MPM 5.41

LA

HH

02/15/2026

AS SHOWN

MK

130 DIAMOND CREEK PLACE

ROSEVILLE, CA 95747

(916) 788-0100

(916) 788-0159 (FAX)ENGINEERING

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AutoCAD SHX Text PLOT DATE:2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGFILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGC:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG

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EXP. 6-30-27

AutoCAD SHX Text No. C050238

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RIP RAP

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REDWOOD ROAD MPM 5.41

LA

HH

02/15/2026

AS SHOWN

MK

130 DIAMOND CREEK PLACE

ROSEVILLE, CA 95747

(916) 788-0100

(916) 788-0159 (FAX)ENGINEERING

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REDWOOD ROAD MPM 5.41

LA

HH

02/15/2026

AS SHOWN

MK

130 DIAMOND CREEK PLACE

ROSEVILLE, CA 95747

(916) 788-0100

(916) 788-0159 (FAX)ENGINEERING

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HH

02/15/2026

AS SHOWN

MK

130 DIAMOND CREEK PLACE

ROSEVILLE, CA 95747

(916) 788-0100

(916) 788-0159 (FAX)ENGINEERING

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STAGE -01

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1. CONTRACTOR TO POST TWO VARIABLE ELECTRONIC MESSAGE SIGN BOARDS ON UP AND DOWN ON REDWOOD ROAD, ONE WEEK CONTRACTOR TO POST TWO VARIABLE ELECTRONIC MESSAGE SIGN BOARDS ON UP AND DOWN ON REDWOOD ROAD, ONE WEEK PRIOR TO CONSTRUCTION INFORMING THE COMMUNITY REGARDING PROPOSED CONSTRUCTION WORK, CONSTRUCTION SCHEDULE, TIMING, NOISE, TRAFFIC DELAYS, DETOURING, AND CONTRACTOR CONTACT INFORMATION. 2. WHEN SHUTTING DOWN ROAD TO ONE LANE OF TRAFFIC, CONTRACTOR SHALL ADD TWO BATTERY POWERED TEMPORARY TRAFFIC WHEN SHUTTING DOWN ROAD TO ONE LANE OF TRAFFIC, CONTRACTOR SHALL ADD TWO BATTERY POWERED TEMPORARY TRAFFIC CONTROL SIGNALS ON EACH SIDE OF WORK ZONE, ALONG WITH ANY RELATED SIGNS AS REQUIRED BY COUNTY TRAFFIC ENGINEER. 3. TRAFFIC SIGNS, FLASHING LIGHTS, BARRICADES AND OTHER TRAFFIC SAFETY DEVICES USED TO CONTROL TRAFFIC SHALL CONFORM TRAFFIC SIGNS, FLASHING LIGHTS, BARRICADES AND OTHER TRAFFIC SAFETY DEVICES USED TO CONTROL TRAFFIC SHALL CONFORM TO THE REQUIREMENTS OF CALIFORNIA MUTCD (CURRENT ONLINE EDITION). 4. ADVANCE WARNING SIGNS SHALL BE EQUIPPED WITH TWO FLAGS EACH FOR DAYTIME CLOSURE. FLAGS SHALL BE AT LEAST 16” X ADVANCE WARNING SIGNS SHALL BE EQUIPPED WITH TWO FLAGS EACH FOR DAYTIME CLOSURE. FLAGS SHALL BE AT LEAST 16” X X 16” IN SIZE AND SHALL BE ORANGE OR FLUORESCENT RED-ORANGE IN COLOR. IN SIZE AND SHALL BE ORANGE OR FLUORESCENT RED-ORANGE IN COLOR. 5. ROADWAY SHALL NOT BE OPENED UNTIL SAFE FOR PUBLIC USE. ALL OPEN TRENCHES MUST BE PLATED OR BACKFILLED PRIOR ROADWAY SHALL NOT BE OPENED UNTIL SAFE FOR PUBLIC USE. ALL OPEN TRENCHES MUST BE PLATED OR BACKFILLED PRIOR TO PUBLIC USAGE. 6. ONE FULL TRAVEL LANE SHALL REMAIN OPEN ALL THE TIMES, MAINTAIN A MINIMUM OF 9' WIDE ROADWAY FOR EMERGENCY ONE FULL TRAVEL LANE SHALL REMAIN OPEN ALL THE TIMES, MAINTAIN A MINIMUM OF 9' WIDE ROADWAY FOR EMERGENCY VEHICLES AND LOCAL AND EMERGENCY ACCESS SHALL BE MAINTAINED AT ALL TIMES. HEAVY COMMERCIAL VEHICLES PROHIBITED. 7. THE CONTRACTOR IS RESPONSIBLE FOR COMPLYING WITH THE TRAFFIC CONTROL PLAN IN CONFORMANCE WITH THE LATEST THE CONTRACTOR IS RESPONSIBLE FOR COMPLYING WITH THE TRAFFIC CONTROL PLAN IN CONFORMANCE WITH THE LATEST CALIFORNIA MUTCD STANDARDS AND AS APPROVED BY THE COUNTY TRAFFIC ENGINEER. IN CASE OF NON-COMPLIANCE, THE COUNTY RESERVES THE RIGHTS TO SHUT DOWN AND/OR STOP ALL WORK. 8. CMS (CHANGEABLE MESSAGE SIGN) BOARDS TO BE PLACED AT OR NEAR DRY CREEK ROAD AND REDWOOD ROAD INTERSECTIONS. CMS (CHANGEABLE MESSAGE SIGN) BOARDS TO BE PLACED AT OR NEAR DRY CREEK ROAD AND REDWOOD ROAD INTERSECTIONS. (CHANGEABLE MESSAGE SIGN) BOARDS TO BE PLACED AT OR NEAR DRY CREEK ROAD AND REDWOOD ROAD INTERSECTIONS. BOARDS TO BE PLACED AT OR NEAR DRY CREEK ROAD AND REDWOOD ROAD INTERSECTIONS. 9. THIS TRAFFIC CONTROL PLAN IS FOR REFERENCE ONLY. CONTRACTOR TO PROVIDE A SEPARATE TRAFFIC CONTROL PLAN TO THE THIS TRAFFIC CONTROL PLAN IS FOR REFERENCE ONLY. CONTRACTOR TO PROVIDE A SEPARATE TRAFFIC CONTROL PLAN TO THE COUNTY FOR REVIEW AND APPROVAL.

REDWOOD ROAD MPM 5.41

LA

HH

02/15/2026

AS SHOWN

MK

130 DIAMOND CREEK PLACE

ROSEVILLE, CA 95747

(916) 788-0100

(916) 788-0159 (FAX)ENGINEERING

TEMPORARY TRAFFIC CONTROL PLAN

STAGE -02

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9' MIN

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OF

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DESIGN:

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DATE:

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SURVEY NOTE:

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JOB

AutoCAD SHX Text PLOT DATE:2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG2/4/2026 3:58 PM, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG, FILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGFILENAME:C:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWGC:\USERS\USER\ADKO DROPBOX\ADKO TEAM FOLDER\PROJECTS\COUNTY OF NAPA\2026 ON-CALL STORM REPAIRS\REDWOOD RD MPM 5.41_4620\CAD\_GB.DWG

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EXP. 6-30-27

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MAJDI M. KANAAN

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(E) WALLWALL

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TEMPORARY TRAFFIC CONTROL PLAN SCALE 1"=20'

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GRAPHIC SCALE

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LEGEND:

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INDICATES DIRECTION OF TRAFFIC

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INDICATE TEMPORARY WATER FILLED BARRIER WITH WARNING LIGHTS

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INDICATE CHANNELIZING DEVICE

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INDICATE WORK SPACE

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INDICATE FLAGGER /OR TEMPORARY SIGNAL

INDICATE CRASH CUSHION

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File details come from the government source that posted it. Updated .