Structure Technical Policies (STPs)

Structure Technical Policies (STPs) supplement design specifications by addressing areas not covered; expanding requirements based on successful past practices; and implementing more recent innovations. STPs include policies from previous Memos to Designers (MTDs) and Bridge Design Aids (BDAs). STPs supersede any similar content in the MTDs or BDAs. Content is limited to that which if not followed, requires a Design Exception by the California State Bridge Engineer.

To requested content or files, that are not currently available at this time, please email: Manuals.Products@dot.ca.gov

Structure Technical Policy (STP) Numbers and Titles  Policy Date

Section 1. Introduction

1.1 Scope, Approval, Implementation (PDF)

May 2020

1.2 Terms and Abbreviations (PDF)

July 2020

1.4 Type Selection (PDF)

November 2019

Section 2. General Design, Drainage, and Hydraulics

2.1 General Notes (PDF)

July 2020

Section 3. Load and Load Factors

3.2 Construction Equipment Overload Reviews (PDF)

June 2020

 Section 4. Structural Analysis and Evaluation  

4.1 Live Load Distribution by Refined Methods of Analysis (PDF)

 July 2021

4.2 Concrete Girder Bridges with Skewed Supports (PDF)

July 2021
4.3 Sound Wall Dead Load Distribution (PDF) July 2021

Section 5. Concrete Structures

5.1 Corrosion Protection for Structural Concrete Elements (PDF)

July 2020

5.2 Cast-In-Place Post-tensioned Concrete Box Girders (PDF)

July 2020

5.4 Deck Closure Pour and Associated Requirements (PDF)

July 2020

5.50 Post-Installed Adhesive Anchors in Concrete (PDF)

July 2020

Section 6. Steel Structures

6.1 Identification of Steel Bridge Members (PDF)

November 2019

6.2 Steel Pedestrian Bridges (PDF)

November 2019

6.3 Catwalks on Steel Bridges (PDF)

June 2020

Section 9. Decks and Deck Systems

9.1 Stay-in-Place Precast Prestressed Concrete Deck Panels for Precast Concrete Girder Superstructures (PDF)

July 2020

9.4 Deck, Overhang and Soffit Design (PDF)

August 2020

 Section 10. Foundations   
 10.9 Micropiles (PDF)  July 2021

Section 11. Walls, Abutments and Piers

11.23 Soil Nail Walls (PDF)

February 2020

11.29 Seismic Design of Earth Retaining Systems (PDF)

August 2020

Section 16. Existing Structures (Including of Rating, Strengthening)

16.1 Widening of Existing Bridges (PDF)

February 2020

16.2 Change in Dead Load of Existing Structures (PDF)

March 2020

 16.6 Design Criteria for Strengthening Steel Girders for Live Loads (PDF) July 2021 

16.8 Analysis of Deck Overhangs on Existing Bridges for Solid Concrete Parapet Rail Collision Forces (PDF)

August 2020

Section 17. Temporary Conditions and Structures

17.1 Design Criteria for Temporary Prefabricated Modular Steel Panel Truss Bridge (PDF)

August 2020