Memo To Designers

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This Page Last Updated: 09/17/2018

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TABLE OF CONTENTS

CONTENTS - VOLUME I
SECTION 1 - General (Policy and Procedure)
SECTION 2 - Plan Preparation
SECTION 3 - Piles
SECTION 4 - Footings
SECTION 5 - Abutments and Retaining Walls
SECTION 6 - Bents and Piers
SECTION 7 - Bearing & Expansion Devices
SECTION 8 - Deck Slabs
SECTION 9 - Existing Bridges
SECTION 10 - Reinforced Concrete Box Girders

CONTENTS - VOLUME II
SECTION 11 - Precast and/or Prestressed
SECTION 12 - Structural Steel
SECTION 13 - Pedestrian Structures
SECTION 14 - Railings and Barriers
SECTION 15 - Structural Analysis
SECTION 16 - Structures Hydraulics
SECTION 17 - Railroads
SECTION 18 - Drainage and Utilities
SECTION 19 - Estimating
SECTION 20 - Seismic
SECTION 21 - Miscellaneous
SECTION 22 - Sound Walls
SECTION 23 - Underground Structures

Return to Top	SECTION 1 General (Policy and Procedure)
Section:	Title:	Date of Memo:
1-0	Implementation Memo	Jan-15
1-0	Development, Approval, Maintenance, & Termination of Memo to Designers	Jan-15
1-3	Checking Procedure	Jan-89
1-3 Attachment A	Checking Procedure	Jan-89
1-4	Estimated Design Hours for Bridges and Related Structures	Apr-92
1-4 Attachment A	Estimated Design Hours	Apr-92
1-8	Implementation Memo	Jan-15
1-8	Planning Studies	Jan-15
1-10	Considering Bridge Security During Design (Metric)	Aug-04
1-11	Stage Construction Future Widenings	Jul-89
1-11 Attachment A	Provision for future Widening	Jul-89
1-21	Bridge "As Built Plans" Changes(Coming soon)	Oct-92
1-21 Attachment A	Form DS-D0011(Coming soon)	Oct-92
1-23	Hydraulic and Hydrologic Data (Metric)	Oct-03
1-29	Implementation Memo	Dec-14
1-29	Structure Type Selection	Dec-14
1-29 Attachment 1	Request for Type Selection Meeting	Dec-14
1-29 Attachment 2	Type Selection Issues, Topics, and Items for Consideration	Dec-14
1-29 Attachment 3	Sample Structure Type Selection Memo and Report	Dec-14
1-29 Attachment 4	Sample Type Selection Meeting Sign-In Sheet	Dec-14
1-29 Attachment 5	Sample Type Selection Meeting Minutes	Dec-14
1-31	Constructability Reviews For Structures Projects	Oct-09
1-31 Attachment 1	Constructability Reviews For Structures Projects	Oct-09
1-35	Foundation Data (Metric)	Mar-98
1-35	Foundation Recommendation And Reports	Jun-08
1-37	Duties of Project Designer	Apr-95
1-47	General Notes	Apr-10
1-47 Attachment 1	Load Factor Design or Load and Resistance Factor Design	Aug-10
1-47 Attachment 2	Preface to California Amendments, 4th Ed. Amended Articles	Sep-09

Return to Top	SECTION 2 Plan Preparation
Section:	Title:	Date of Memo:
2-2	Deck Contour (Metric)	Jan-99
2-2 Attachment 1	From DS-D134 (Rev 12/88)(Metric)	Jan-99
2-11	Bridge Numbering System	Feb-93
2-12	Implementation Memo	Oct-12
2-12	Special Design Earth Retaining Systems Numbering	Oct-12
2-12 Attachment A	Request for Earth Retaining Structures Bridge Number (ERSBrNo Form)	Oct-12

Return to Top	SECTION 3 Piles
Section:	Title:	Date of Memo:
3-0	Pile Foundation Design	Mar-89
3-1	Implementation Memo	Jun-14
3-1	Deep Foundations	Jun-14
3-1 Attachment 1	Design Procedure and Examples	Jun-14
3-1 Attachment 2	CIDH Inspection Tubes	Jun-14
3-1 Attachment 3	Equivalent Standard Metric Sizes	Jun-14
3-4	Piles Adjacent to Existing Roadway or Private Property	Oct-88
3-6	Large Diameter Hollow Prestressed Driven Piles	Oct-88
3-7	Implementation Memo	Apr-12
3-7	Design Data Documentation and Evaluation of Anomalous Concrete Shafts	Apr-12
3-7 Attachment 1	Shaft Design Information Forms	Apr-12
3-7 Attachment 2	Example of Evaluation Process	Apr-12
3-7 Attachment 3	Pile Design Data Form (GGL)	Apr-12
3-7 Attachment 4	Pile Design Data Form (CSL)	Apr-12
3-8	Implementation Memo	Oct-16
3-8	Tip Post-Grouting of Drilled Shafts	Oct-16

Return to Top	SECTION 4 Footings
Section:	Title:	Date of Memo:
4-1	Implementation Memo	Apr-14
4-1	Spread Footings	Apr-14
4-1 Attachment 1	Preliminary Foundation Design Data Sheet	Apr-14
4-1 Attachment 2	Foundation Geotechnical Data Table	Apr-14
4-1 Attachment 3	Bridge Foundation loads	Apr-14
4-1 Attachment 4	Foundation Design Data Sheet	Apr-14
4-1 Attachment 5	Spread Footing Data Tables	Apr-14
4-2	Superimpose Footing Locations on Log of Test Borings Sheet	Oct-88

Return to Top	SECTION 5 Abutments and Retaining Walls
Section:	Title:	Date of Memo:
5-1	Implementation Memo	Mar-17
5-1	Abutments	Mar-17
5-1 Attachment 1	Attachment 1	Mar-17
5-2	Diaphragm Abutments	Oct-92
5-2	Diaphragm Abutments (Metric)	May-96
5-3	Structure Approach	Dec-92
5-3	Structure Approach (Metric)	May-96
5-3 Attachment A	Selection Process for Structure Approach Pavement System on PCC Pavement (Metric)	May-96
5-3 Attachment B	Selection Process for Structure Approach Pavement System on AC Pavement (Metric)	May-96
5-5	Implementation Memo	Apr-14
5-5	Design Criteria of Standard Earth Retaining Systems	Apr-14
5-7	Earth Retaining System Safety Railing (Metric)	Jan-05
5-10	Slope Treatment Under Structures	Apr-89
5-12	Earth Retaining Systems Using Ground Anchors	Jun-12
5-14	Review of Shop Drawings for Ground Anchors	Jun-12
5-16	Review of Working Drawings for Proprietary Earth Retaining Systems	Apr-92
5-18	Soil Nail Walls	Jan-91
5-18 Attachment A	Soil Nail Working Drawings Review Process (Interim)	Oct-04
5-19	Implementation Memo	Jul-15
5-19	Earth Retaining Systems Communication	Jul-15
5-19 Attachment A	Earth Retaining Systems Communication	Jul-15
5-20	Foundation Report/Geotechnical Design Report Checklist for Earth Retaining Systems (Metric)	Aug-04

Return to Top	SECTION 6 Bents and Piers
Section:	Title:	Date of Memo:
6-1	Column Analysis Considerations	Feb-09
6-5	Reinforced Concrete Pier Walls (Metric)	Feb-99
6-5 Attachment 1	Percentage and Spacing Requirements for Pier Wall Reinforcement (Metric)	Feb-99
6-5 Attachment 2	Pier Wall Example Reinforcement for Lightly Loaded Walls (Metric)	Feb-99

Return to Top	SECTION 7 Bearing & Expansion Devices
Section:	Title:	Date of Memo:
7-1	Bridge Bearings	Jun-94
7-1 Attachment 1	Prestress Shortening	Jun-94
7-1 Attachment 2	Structure for Examples 2 and 3	Jun-94
7-1 Attachment 3	Structure for Examples 4 and 5	Jun-94
7-1 Attachment 4	PTFE/Spherical Expansion Bearing Details	Jun-94
7-10	Bridge Deck Joints and Deck Joint Seals	Jun-94
7-10 Attachment 1	Calculation of Points of No Movement	Sep-94
7-10 Attachment 2	Joint Movements Calculations	Sep-94
7-10 Attachment 3	Maximum Contributory Structure Length	Sep-94
7-10 Attachment 4	Prestress Shortening	Sep-94
7-10 Attachment 5	Approximate Properties for Preformed Elastomeric Joint Seals Type B Manufacturer's Nominal Properties for Design Data Only	Sep-94
7-10 Attachment 6	Typical Alternate Joint Seal Assembly	Sep-94
7-10 Attachment 7	Size Blockout Dimensions	Sep-94
7-10 Attachment 8	Typical Modular Joint Seal Assembly	Sep-94
7-10 Attachment 9	Bridge Deck Joint Rehabilitation Projects	Sep-94

Return to Top	SECTION 8 Deck Slabs
Section:	Title:	Date of Memo:
8-2	Protection Against Deicing Chemicals and Freeze-Thaw Environment	Dec-13
8-2 Attachment 1	Table 1	Dec-13
8-2 Attachment 2	California State Highways Environmental Areas	Dec-13
8-2 Attachment 3	Table 2 Freeze-Thaw Areas	Dec-13
8-5	Overlays on Existing Bridge Decks (Metric)	May-96
8-6	Implementation Memo	Sep-16
8-6	Stay-in-Place Precast Prestressed Concrete Deck Panels For Precast Concrete Girder Superstructures	Aug-16
8-7	Implementation Memo	Jan-16
8-7	Stay-In-Place Metal Forms for Precast Concrete and Steel Superstructures	Jan-16
8-8	Implementation Memo	Mar-13
8-8	Deck Finishing and Quiet Decks	Mar-13

Return to Top	SECTION 9 Existing Bridges
Section:	Title:	Date of Memo:
9-1	Dependent Dimension	Mar-89
9-2	Maintenance Rating	Mar-86
9-2	Maintenance Rating (Metric)	May-96
9-2 Attachment 1	Standard Permit Rating and Design Vehicles with Purple Loads	Mar-86
9-2 Attachment 1	Standard Permit Rating and Design Vehicles with Purple Loads (Metric)	May-96
9-3	Widening Existing Bridges	May-10
9-4	Live Loads and Stresses Historical Background	Jan-86
9-5	Removal of Existing Bridges	May-86
9-6	Permit Upgrading	Dec-82
9-7	Strengthening Steel Girder Bridges for Live Loads	Sep-89
9-7 Attachment A	Strengthening Steel Girder Bridges for Live Loads	Sep-89
9-8	Widening Closed End Cellular Abutments (Metric)	Feb-02

Return to Top	SECTION 10 Reinforced Concrete Box Girders
Section:	Title:	Date of Memo:
10-1	Reinforced Concrete Strength Requirements (Metric)	Apr-99
10-5	Protection of Reinforcement Against Corrosion Due to Chlorides, Acids Sulfates	Jun-10
10-6	Use of Prefabricated Epoxy Coated Reinforcement in Marine Environment	Jun-10
10-20	Deck and Soffit Slab	Dec-17
10-20 Attachment 1	Deck Slab Reinforcement Details	Dec-17
10-20 Attachment 2	Deck Slab Thickness and Reinforcement Schedule	May-08
10-20 Attachment 3	Soffit Slab Reinforcement Details	May-08

Return to Top	SECTION 11 Precast and/or Prestressed
Section:	Title:	Date of Memo:
11-1	Implementation Memo	Apr-13
11-1	Prestressed Concrete - Shop Drawing Review	Apr-13
11-1 Attachment 1	Checking Prestress Shop Drawings Attachment 1	Dec-16
11-1 Attachment 2	Attachment 2	Apr-13
11-3	Designer's Check List for Prestressed Concrete	Nov-10
11-8	Implementation Memo	Mar-14
11-8	Design Guidelines of Precast Prestressed Girders	Nov-96
11-8	Design Guidelines of Precast Prestressed Girders	Feb-14
11-18	Stressing Incomplete Bridges	Dec-88
11-25	Implementation Memo	Oct-12
11-25	Anchorage Zone Design	Oct-12
11-28	Prestress Clearances for Cast-In-Place Prestressed Box Girder Structures	Oct-10
11-28 Attachment 1	Prestress Clearances for Cast-In-Place Prestressed Box Girder Structures	Jan-13
11-28 Attachment 2	Prestress Clearances for Cast-In-Place Prestressed Box Girder Structures	Jun-15
11-31	Implementation Memo	Oct-12
11-31	Curved Post-Tensioned Bridges	Oct-12
11-34	Implementation Memo	Sep-12
11-34	Hinge Curl	Sep-12

Return to Top	SECTION 12 Structural Steel
Section:	Title:	Date of Memo:
12-1	Implementation Memo	Sep-12
12-1	Review of Shop Drawings - Steel Structures	Sep-12
12-2	Implementation Memo	May-12
12-2	Guidelines for Identification of Steel Bridge Members	May-12
12-3	Camber of Steel-Concrete Composite Girders (Metric)	Aug-04
12-4	Criteria for Control Dimension "Y" on Steel Girders(Metric)	Aug-04
12-5	Complete Joint Penetration and Partial Joint Penetration Groove Welds (Metric)	Aug-04
12-6	Field Welding Near Elastometric Bearing Pads (Metric)	Aug-04
12-7	Catwalks on Steel Bridges (Metric)	Aug-04
12-8	Steel Pedestrian Bridges	Nov-09
12-9	Implementation Memo	Sep-18
12-9	Design Criteria For Temporary Prefabricated Modular Steel Panel Truss Bridges	Sep-18
12-11	Galvanizing Tanks (Metric)	Aug-04

Return to Top	SECTION 13 Pedestrian Structures
Section:	Title:	Date of Memo:
13-1	Pedestrian Grade Separations (Overpasses and Underpasses) Compliance for the Physically Handicapped (Under Construction)	Jun-89
13-2	Physically Handicapped Compliance Approval (Under Construction)	Jun-89

Return to Top	SECTION 14 Railings and Barriers
Section:	Title:	Date of Memo:
14-19	Temporary Railing	Apr-90

Return to Top	SECTION 15 Structural Analysis
Section:	Title:	Date of Memo:
15-14	Loads for Temporary Highway Structures	Dec-10
15-14 Attachment 1	Loads for Temporary Highway Structures	Dec-10
15-15	Materials Hauling Equipment Loading	Feb-07
15-16	Crane Loads on Structures While Under Contract Administration	Jul-69
15-17	Future Wearing Surface	Dec-88
15-18	Additional Dead Load on Bridge Decks	Sep-88
15-19	Implementation Memo	Feb-14
15-19	Bridges With Skewed Supports	Jan-14
15-20	Implementation Memo	Nov-16
15-20	Live Load Distribution By Three Dimensional Analysis	Nov-16

Return to Top	SECTION 16 Structures Hydraulics
Section:	Title:	Date of Memo:
16-1	Implementation Memo	Feb-18
16-1	Hydraulic Design for Structures Over Waterways	Dec-17
16-1 Attachment 1	Roles and Responsibilities	Dec-17
16-1 Attachment 2	Hydraulic Reports	Dec-17
16-1 Attachment 3	Glossary of Terminology for Hydraulics & Scour	Dec-17
Deleted	Deleted	May-05

Return to Top	SECTION 17 Railroads
Section:	Title:	Date of Memo:
17-100	General	Apr-89
17-101	Correspondence with Railroads	Mar-89
17-102	Railroad Standard Drawings	Mar-89
17-105	This section is under construction, please contact Raj Mangat with any questions.
17-106	This section is under construction, please contact Raj Mangat with any questions.
17-110	This section is under construction, please contact Raj Mangat with any questions.
17-115	Railroad Bridges Superstructure Depths	Mar-91
17-120	Special Requirements of Railroad Companies	Jan-91
17-121	Western Pacific Railroad Company	Apr-89
17-125	Drainage at Overheads	May-89
17-130	Railroad Live Loading and Impact	Apr-89
17-135	Surcharge from Railroad Loading	May-89
17-140	SPT Co Supplemental Requirements to Chapter 8 AREA Specifications	Aug-89

Return to Top	SECTION 18 Drainage and Utilities
Section:	Title:	Date of Memo:
18-1	Bridge Deck Drainage (Metric)	Sep-96
18-1	Bridge Deck Drainage	Sep-09
18-2	Utilities and Openings for Future Utilities In Bridge	Feb-90
18-2	Utilities and Openings for Future Utilities In Bridge (Metric)	Jul-96
18-2 Attachment	Encroachments on Bridges	Feb-90
18-2 Attachment	Encroachments on Bridges (Metric)	Jul-96
18-3	Supply Lines, Communication Conduit and Sprinkler Control Conduit on Bridges	Dec-90

Return to Top	SECTION 19 Estimating
Section:	Title:	Date of Memo:
	No Items Are Currently In This Section

Return to Top	SECTION 20 Seismic
Section:	Title:	Date of Memo:
20-1	Seismic Design Methodology	Jul-10
20-1 Attachment 1	Seismic References	Jul-10
20-2	Site Seismicity for Temporary Bridge and Stage Construction	May-11
20-3	Restrainers at Support Joints	Jul-08
20-4	Implementation Memo	Jun-16
20-4	Seismic Retrofit Guidelines for Bridges in California	Jun-16
20-4 Attachment 1	Seismic Retrofit Assessment Form	Sept-16
20-5	Identifying Seismic Design Criteria In The General Notes	May-10
20-6	Seismic Strength of Concrete Bridge Superstructures	Aug-01
20-6 Attachment 1	Demand Procedure (Metric)	Aug-01
20-6 Attachment 2	Capacity Procedure (Metric)	Aug-01
20-7	Implementation Memo	Oct-14
20-7	Seismic Design of Slab Bridges	Apr-16
20-7 Attachment A	Slab Bridge Example Details	Apr-16
20-7 Attachment B	Pile/Shaft Extension Details	Apr-16
20-8	Analysis of Ordinary Bridges that Cross Faults	Jan-13
20-9	Implementation Memo	Apr-16
20-9	Splices in Bar Reinforcing Steel for Bridges	Apr-16
20-9 Attachment A	Pile/Shaft Example Details	Apr-16
20-9 Attachment B	Spiral Splice Details	Apr-16
20-10	Implementation Memo	Mar-13
20-10	Fault Rupture	Jan-13
20-11	Establishing Bridge Seismic Design Criteria (Metric)	Jan-99
20-12	Implementation Memo	Mar-13
20-12	Seismic Design Criteria for Bridge Widenings	Apr-13
20-13	Tsunami Hazard Guidelines	Jan-10
20-14	Quantifying the Impacts of Soil Liquefaction and Lateral Spreading on Project Delivery Attachment 1	Jul-08
20-14 Attachment 1	Foundation Design Flowchart based on Availble Soil Data	Jul-08
20-15	Lateral Spreading Analysis For New And Existing Bridges	May-17
20-15 Attachment 1	Lateral Spreading Analysis For New And Existing Bridges	May-17
20-16	Seismic Safety Peer Review	Jun-09
20-17	Implementation Memo	Jun-14
20-17	Understanding Directionality Concepts in Seismic Analysis	Jun-14
20-21	Implementation Memo	Dec-16
20-21	Seismic Requirements for Headed Bar Reinforcement	Dec-16

Return to Top	SECTION 21 Miscellaneous
Section:	Title:	Date of Memo:
21-19	Guidelines for Clearance to Construction Operations	Mar-89
21-19	Guidelines for Clearance to Construction Operations (Metric)	Jul-96
21-19 Attachment 1	Footing Excavation	Mar-89
21-19 Attachment 1	Footing Excavation (Metric)	Jul-96
21-19 Attachment 2	Pile Driving and Drilling Small CIDH Piles	Mar-89
21-19 Attachment 2	Pile Driving and Drilling Small CIDH Piles (Metric)	Jul-96
21-19 Attachment 3	Column Construction	Mar-89
21-19 Attachment 3	Column Construction (Metric)	Jul-96
21-35	Limits of Widths of Bridge Superstructures	Nov-88
21-35	Limits of Widths of Bridge Superstructures	Jul-96
21-47	Lightweight Concrete	Mar-86
21-52	Architectural Treatment of Walls and Columns	Sep-93
21-52 Attachment 1	Architectural Treatment of Walls and Columns	Sep-93

Return to Top	SECTION 22 Sound Walls
Section:	Title:	Date of Memo:
22-1	Sound Wall Design Criteria (Metric)	Aug-04
22-2	Soundwall Load Distribution (Metric)	Feb-04
22-5	Sound Wall Plans Format for Projects by Office of Structure Design	Nov-88
22-50	Sound Wall - Concrete Masonry Blocks	Dec-88
22-55	Sound Wall - Design Weight - Concrete Masonry Block	Nov-88

Return to Top	SECTION 23 Underground Structures
Section:	Title:	Date of Memo:
23-1	Implementation Memo	Jun-17
23-1	Buried Reinforced Concrete Box Structures	Jun-17