Plan-2026_Annual_Guardrail-Petite_and_Turley_Sites.pdf
PDF 2 MB Posted
- Attached to
- 2026 Annual Guardrail Repair
- Solicitation number
- RDS 26-12
- Issued by
- Napa County, California
About this file
This is a technical plan document prepared for the State of California related to a guardrail and crash cushion replacement project. The plan provides detailed construction specifications for two sites located on St. Helena Highway in St. Helena, California, specifically at address 3358 St. Helena Highway. Site #1 involves the removal of an existing crash cushion and concrete barrier, with construction of 25 linear feet of transition concrete barrier, installation of a new CALTRANS MASH-approved Delta Intelligent crash cushion with vertical shape transitions, and sawcutting to create a 48-inch-wide concrete pad with 6-inch-deep reinforced concrete. Site #2 requires removal of an existing crash cushion and concrete barrier, removal of 71 linear feet of existing concrete barrier, installation of 25 linear feet of double thrie beam with 37.5 linear feet of additional double thrie beam (posts at 3.125-foot on-center spacing), installation of a new Delta Intelligent crash cushion with a 48-inch-wide by 23-foot-long concrete pad, and removal of 3 sections of 12.5-foot existing guardrail with buffer terminal installation. All work must conform to 2024 CALTRANS Standard Plans, and temporary traffic control measures including R3-2 no-left-turn signage are required during construction.
The document is drawn to scale and includes detailed construction notes and specifications per manufacturer requirements. The project is part of the 2026 Annual Guardrail Repair initiative, which combines guardrail repairs at 17 county roads and Dry Creek Bridge as a Base Bid, with the St. Helena Highway crash cushion replacements offered as an Additive Alternate bid. The contract award will be determined by the lowest Base Bid submission. The plan was designed, drawn, and checked by DP, GW, and DP respectively, with final approval dated July 13, 2026, and is presented as Sheet 2 of 3 and Sheet 3 of 3 of the complete project documentation.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| 2026_Annual_Guardrail_Repair.pdf | ||
| Plan-2026_Annual_Guardrail-Site_#1-#17.pdf | ||
| Plan-2026_Annual_Guardrail-Dry_Creek_Road_MPM_5.59.pdf | ||
| Specs-2026_Annual_Guardrail.pdf | ||
| Sample_Napa_County_Bid_Bond_Form.pdf | ||
| Sample_Construction_Contract.docx | DOCX document | |
| Sample_Payment_and_Performance_Bonds.docx | DOCX document |
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Text version
DATENo.
DRAWING:SCALE:
0 1"
NOTE: VERIFY SCALE.
BAR IS ONE INCH ON
ORIGINAL DRAWING.
ADJUST SCALES
ACCORDINGLY IF BAR
IS NOT ONE INCH.
PROJECT NUMBER:
FEDERAL PROJECT:
DESIGNED BY:
DRAWN BY:
CHECKED BY:
DATE:
SHEET OF
APPDBYREVISION
DP GW
DP 7/13/2026 2 3
NOT TO SCALE
CRASH CUSHION REPLACEMENT PLAN
ST. HELENA HIGHWAY
3358 ST. HELENA HIGHWAY,
ST. HELENA, CA 94574
REMOVE EXISTING CRASH CUSHION AND DELIVER TO COUNTY'S CORP. YARD.
REMOVE AND DISPOSE OF CONCRETE PAD, AND 33.5 LF OF EXISTING CONCRETE
BARRIER
CONSTRUCT 25 LF OF TRANSITION CONCRETE BARRIER TO CONCRETE BARRIER
TYPE 60MS PER CALTRANS 2024 STANDARD PLANS A76B
CONSTRUCT 13 LF OF TRANSITION CONCRETE BARRIER TYPE 60MS TO CRASH
CUSHION PER 2024 CALTRANS STANDARD PLANS A76HA
INSTALL NEW CALTRANS MASH APPROVED 'DELTA INTELLIGENT' CRASH CUSHION
AND TWO 'VERTICAL SHAPE TRANSITIONS" PER MANUFACTURER'S SPECIFICATIONS
SAWCUT EXISTING PAVEMENT TO CONSTRUCT NEW 48" WIDE CONCRETE PAD WITH
6" DEEP REINFORCED CONCRETE OVER COMPACTED BASE PER MANUFACTER'S
SPECIFICATION.
MAINTAIN MINIMUM 51" CLEARANCE BETWEEN NEW 'DELTA INTELLIGENT' CRASH
CUSHION AND EXISTING DETECTABLE WARNING SURFACE
CORE DRILL FOUR INCH HOLES AT 10 FEET O.C. FOR 300 FEET SOUTH OF BARRIER
TRANSITION
CONSTRUCTION NOTES
BALE GRIST M
I
LOCATION #2
SEE DETAIL 1B AND 1C ON SHEET 3
LOCATION #1
SEE DETAIL 1A THIS SHEET
DETAIL 1A
ST. HELENAHIGHWAY
2 3 4
TEMPORARY R3-2 (NO LEFT TURN) AT DRIVEWAY
DURING CONSTRUCTION
RDS 26-12
SITE #2 - 3358 ST.HELENA HIGHWAY, ST. HELENA CA
DATENo.
DRAWING:SCALE:
0 1"
NOTE: VERIFY SCALE.
BAR IS ONE INCH ON
ORIGINAL DRAWING.
ADJUST SCALES
ACCORDINGLY IF BAR
IS NOT ONE INCH.
PROJECT NUMBER:
FEDERAL PROJECT:
DESIGNED BY:
DRAWN BY:
CHECKED BY:
DATE:
SHEET OF
APPDBYREVISION
DP GW
DP 7/13/2026 3 3
NOT TO SCALE
CRASH CUSHION REPLACEMENT PLAN
REMOVE EXISTING CRASH CUSHION AND DELIVER TO COUNTY'S COPR. YARD.
REMOVE AND DISPOSE OF CONCRETE PAD.
AREA OF NEW HOT MIX ASPHALT (TYPE A) WITH 3" AC OVER 8" CLASS II AB. SAW
CUT 1" OF THE EXISTING AC PAVEMENT
ALIGN DOUBLE THRIE BEAM AND CRASH CUSHION/PAD ALONG THE REFERENCE
LINE TO PROVIDE A MINIMUM OF 8 FEET FOR THE TRAIL WIDTH
REMOVE 71 LF OF EXISTING CONCRETE BARRIER
CONSTRUCT 13 LF OF TRANSITION CONCRETE BARRIER TYPE 60MS TO THRIE BEAM
PER 2024 CALTRANS STANDARD PLANS A76HA
INSTALL 25 LF OF DOUBLE THRIE BEAM TRANSITION PER CALTRANS 2024 STANDARD
PLAN A78P1
INSTALL 37.5 LF OF DOUBLE THRIE BEAM (POSTS @ 3.125' O.C.) PER CALTRANS 2024
STANDARD PLAN A78P1
INSTALL NEW CALTRANS MASH APPROVED 'DELTA INTELLIGENT' CRASH CUSHION
AND 48" WIDE BY 23' LONG CONCRETE WITH 6" DEEP REINFORCED CONCRETE PAD
OVER COMPACTED BASE PER MANUFACTURER'S SPECIFICATIONS
REMOVE 3X12.5' OF EXISTING GUARDRAIL AND POSTS. INSTALL BUFFER/ROUNDED
END TERMINAL AT THE NEW END OF THE GUARDRAIL
CONSTRUCTION NOTES
RDS 26-12
SITE #2 - 3358 ST.HELENA HIGHWAY, ST. HELENA CA
ST. HELENA
HIGHWAY
DETAIL 1C
DETAIL 1B
ST. HELENA HIGHWAY
AutoCAD SHX Text
8' MIN (TRAIL WIDTH)
AutoCAD SHX Text
REFERENCE LINE
AutoCAD SHX Text
SAWCUT
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