| Bridge Standards & Manuals |
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| Bridge Design/Drafting Manual |
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2004 Bridge Design & Drafting Manual (BDDM), updated April, 2008 (Adobe .PDF)
Bookmarks are now used in Section 1 and Section 2
Table of Contents (not Linked)
Introduction
Section 1 - Design & Detailing Practices (includes Bookmarks)
Section 2 - Drafting Practices (includes Bookmarks)
Subject Index
(Warning: The Section 1 & 2 files are large and slow to load)
2004 ODOT Seismic Design Maps:
500-YEAR Peak Ground Acceleration
500-YEAR 0.2 SEC. Spectral Acceleration
500-YEAR 1 SEC. Spectral Acceleration
1000-YEAR Peak Ground Acceleration
1000-YEAR 0.2 SEC. Spectral Acceleration
1000-YEAR 1 SEC. Spectral Acceleration
2500-YEAR Peak Ground Acceleration
2500-YEAR 0.2 SEC. Spectral Acceleration
2500-YEAR 1 SEC. Spectral Acceleration
Seismic Design Examples:
Foundation modeling
Drilled shafts
3 span bridge
4 span bridge
Isolation bearings
Restrainers
Past BDDM Summaries of Changes
through April 2008.
through October 2007 .
through April 2007.
through October 2006.
through April 2006.
through November 2005.
through April 2005.
October 2004,
Past BDDM Sections
Section 1, November 2007
Section 2, November 2007
Section 1, April 2007
Section 2, April 2007
Section 1, October 2006
Section 2, October 2006
Section 1, April 2006
Section 2, April 2006
Section 1, November 2005
Section 2, November 2005
Section 1, April 2005
Section 2, April 2005
October 2004
Distribution Letters from the State Bridge Engineer.
April 23, 2008 (current)
November 14, 2007
April 18, 2007
November 14, 2006
June 5, 2006
November 17, 2005
April 28, 2005
October 19, 2004 (original)
Related Materials:
Example Drawings
ODOT Geotechnical Design Manual Website
ODOT Bridge Foundation Design Practices & Procedures updated October 2005 (Table of Contents has navigation links). For use on projects before April 1, 2007
Seismic Foundation Design Practices, October 2005; For use on projects before April 1, 2007
Recommended Guidelines for Liquefaction Evaluations Using Ground Motions from Probabilistic Seismic Hazard Analyses.
ODOT Research Report SPR 361 "Assessment & Mitigation of Liquefaction Hazards to Bridge Approach Embankments in Oregon" (Table of Contents has navigation links).
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| Technical Bulletins |
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Technical Bulletin Status- April 24, 2007
Rescinded 11/14/06- Technical Bulletin BR 2005-01- Applicable AASHTO Bridge Design Specification for Permanent and Temporary Bridges. July 27, 2005
Rescinded 11/14/06- Technical Bulletin BR06-01(B)- Bridge Document Standards and Process. April 12, 2006
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| Load Rating |
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Load Ratings are performed to protect both the safety of traffic and the significant investment in the state’s bridge infrastructure. Knowledge of the capacity of each bridge to carry loads is critical for each function. A Load Rating that reflects the current condition of each bridge provides a valuable tool that is used in identifying the need for load posting or bridge strengthening and in making overweight-vehicle permit decisions. Load Ratings are also used in the bridge management system to prioritize bridge repairs and replacements.
ODOT Bridge Section is in the process of implementing the Load and Resistance Factor Rating (LRFR) method, based on the 2003 AASHTO Manual for Condition Evaluation and Load and Resistance Factor Rating (LRFR) of Highway Bridges. This method is referred to as the Tier-2 Load Rating Procedures. LRFR is a statistically-based, more accurate and defensible load rating than the previous method, now referred to as the Tier-1 Load Rating Procedures.
The applicability of the Tier-2 Load Rating Procedures is determined by the availability of calibrated Liveload Factors and the ongoing development of procedures for specific structure types.
1. Refer to this Load Rating Procedure Flowchart to determine which method is appropriate for a specific structure.
2. Then choose the appropriate link below to access resources on the ODOT FTP Server for the applicable Load Rating Procedures:
Resources for Tier-2 Load Rating Procedures
Resources for Tier-1 Load Rating Procedures
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| Bridge Data System User Guide |
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For those who have access to the BDS, this is the Bridge Data System User Guide, February 2005 (Table of Contents has navigation links).
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| Standard Bridge Drawings |
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Standard Bridge Drawings are published on the ODOT Specifications Unit web pages an an Index of printable and downloadable Standard Drawings with a direct link for each drawing.
Bridge Engineering Standard Drawing Series:
File format
The Bridge Standard Drawings are provided in the Acrobat Portable Document Format (.PDF) which requires the free Adobe Acrobat Reader software for viewing and printing. If you do not have Adobe Acrobat Reader, you can download a free copy by visiting the Adobe Acrobat Reader web site. It is ODOT's policy that files in the original Microstation .DGN format are not available to the general public.
Opening and Saving files
Generally bridge drawings are large files (mostly in the 200 KB to 800 KB range) that may take a long time to open via a modem. If you encounter a blank white page, try clicking the Refresh or Reload button. Drawing files that are opened for viewing or printing by Acrobat Reader can be saved using File, Save As... from the menu. Occasionally error messages appear when opening a drawing file. You should be able to click on OK and ignore them.
Printing
You can print a drawing directly from Acrobat Reader without saving the file. If you have 11x17 printing capability, in the "Print" dialog, click the Properties or Setup button... and choose Paper Size as 11x17 and Orientation as Landscape. For 8-1/2x11 printing (usually the default), in the "Print" dialog it is necessary to check the Shrink to Fit box (Acrobat version 3) or the Fit to Page box (Acrobat version 4 or higher).
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| ODOT Specifications |
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General ODOT Specifications web site - has links to all specifications pages.
Specific bridge-related specifications -
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| ODOT Bridge Log |
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ODOT Bridge Log (Adobe .PDF) list of all state-owned bridges by highway and milepost -
Latest ODOT Bridge Log (Adobe .PDF) (warning - this is a very large file which may load quite slowly)
Tips for use: Once the .PDF file is open, you can jump directly to browse a particular highway by clicking on the appropriate Bookmark on the left side. You can also navigate to a particular highway using links on the Primary and Secondary Highway tables near the beginning of the Bridge Log. These tables relate the highway numbers used in the Bridge Log (which are internal ODOT maintenance numbers) to highway names and the signed route numbers familiar to the public.
In Internet Explorer, if the Favorites or History panel is open on the left side, close this panel to see a bigger and more readable Bridge Log page. To locate the entry for a particular bridge, use Acrobat's "Find" button (binoculars) and enter the desired bridge number or name (or any other useful text string) and click "Find". Because many bridges appear on more than one highway, it may be necessary to click the "Find Again" button (binoculars with curved arrow) to find the main description for that bridge (the "On" record). Warning: Searches may be very slow!
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