Design memorandum
Design memorandum are issued as interim updates to the Bridge Design Manual. Active design memorandums supersede the Bridge Design Manual contents and are currently enforced.
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Related manual chapters
Chapter 5 - Concrete Structures (PDF 18MB) provides design guidance for reinforced and prestressed concrete including cast-in-place and precast elements. Concrete elements discussed include bridge decks, pier caps, reinforced concrete box girders, post-tensioned box girders, pretensioned girders and spliced girders.
Chapter 6 - Steel Structures (PDF 2.2MB) provides design guidance and plan details for steel superstructures. Shop plan review, painting and corrosion of steel foundations and buried structures is also discussed.
Bridge Design Manual
Complete Bridge design guidance is found in the Bridge Design Manual (M 23-50).
Disclaimer
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Bridge design drawings
Find bridge design drawings for the following:
Chapter 5 - Concrete Structures
- Girder Sections
- Superstructure Construction Sequences
- W Girders
- WF Girders
- Wide Flange Thin Deck Girders
- Wide Flange Deck Girders
- Wide Flange Deck Girders (UHPC)
- Deck Bulb Tee Girders
- Slabs
- Tub Girders
- Stay-In-Place Deck Panel
- Post Tensioned Spliced Girders
Chapter 6 - Structural Steel
Girder Sections
5.6-A1-10 Prestressed Concrete I and WF Girders (PDF 75KB) (DWG 62KB)
5.6-A1-11 Prestressed Concrete Deck Girders (PDF 118KB) (DWG 79KB)
5.6-A1-12 Spliced Prestressed Concrete Girder (PDF 127KB) (DWG 73KB)
5.6-A1-13 Prestressed Concrete Tub Girders (PDF 65KB) (DWG 41KB)
Superstructure Construction Sequences
5.6-A2-1 Single Span Prestressed Girder Construction Sequence (PDF 84KB) (DWG 64KB)
5.6-A2-2 Multiple Span Prestressed Girder Construction Sequence (PDF 80KB) (DWG 51KB)
5.6-A2-3 Raised Crossbeam Prestressed Girder Construction Sequence (PDF 80KB) (DWG 51KB)
W Girders
5.6-A3-1 W42G Girder Details 1 of 2 (PDF 109KB) (DWG 140KB)
5.6-A3-2 W42G Girder Details 2 of 2 (PDF 86KB) (DWG 136KB)
5.6-A3-3 W50G Girder Details 1 of 2 (PDF 110KB) (DWG 136KB)
5.6-A3-4 W50G Girder Details 2 of 2 (PDF 87KB) (DWG 125KB)
5.6-A3-5 W58G Girder Details 1 of 3 (PDF 111KB) (DWG 142KB)
5.6-A3-6 W58G Girder Details 2 of 3 (PDF 85KB) (DWG 184KB)
5.6-A3-7 W58G Girder Details 3 of 3 (PDF 85KB) (DWG 77KB)
5.6-A3-8 W74G Girder Details 1 of 3 (PDF 114KB) (DWG 147KB)
5.6-A3-9 W74G Girder Details 2 of 3 (PDF 85KB) (DWG 117KB)
5.6-A3-10 W74G Girder Details 3 of 3 (PDF 69KB) (DWG 83KB)
WF Girders
5.6-A4-1 WF Girder Details 1 of 5 (PDF 120KB) (DWG 82KB)
5.6-A4-2 WF Girder Details 2 of 5 (PDF 103KB) (DWG 107KB)
5.6-A4-3 WF Girder Details 3 of 5 (PDF 99KB) (DWG 90KB)
5.6-A4-4 WF Girder Details 4 of 5 (PDF 105KB) (DWG 105KB)
5.6-A4-5 WF Girder Details 5 of 5 (PDF 101KB) (DWG 99KB)
5.6-A4-6 Additional Extended Strands (PDF 88KB) (DWG 73KB)
5.6-A4-7 End Diaphragm Details (PDF 143KB) (DWG 115KB)
5.6-A4-8 L Abutment End Diaphragm Details (PDF 126KB) (DWG 106KB)
5.6-A4-9 Diaphragm at Intermediate Pier Details (PDF 135KB) (DWG 153KB)
5.6-A4-10 Partial Depth Intermediate Diaphragm Details (PDF 106KB) (DWG 95KB)
5.6-A4-11 Full Depth Intermediate Diaphragm Details (PDF 99KB) (DWG 99KB)
5.6-A4-12 I Girder Bearing Details (PDF 109KB) (DWG 86KB)
Wide Flange Thin Deck Girders
5.6-A5-1 WF Thin Deck Girder Details 1 of 5 (PDF 121KB) (DWG 81KB)
5.6-A5-2 WF Thin Deck Girder Details 2 of 5 (PDF 106KB) (DWG 119KB)
5.6-A5-3 WF Thin Deck Girder Details 3 of 5 (PDF 103KB) (DWG 98KB)
5.6-A5-4 WF Thin Deck Girder Details 4 of 5 (PDF 111KB) (DWG 119KB)
5.6-A5-5 WF Thin Deck Girder Details 5 of 5 (PDF 101KB) (DWG 101KB)
5.6-A5-6 WF Thin Deck Girder End Diaphragm Details (PDF 147KB) (DWG 111KB)
5.6-A5-7 WF Thin Deck Girder L Abutment End Diaphragm Details (PDF 127KB) (DWG 110KB)
5.6-A5-8 WF Thin Deck Girder Diaphragm at Intermediate Pier Details (PDF 129KB) (DWG 149KB)
5.6-A5-9 WF Thin Deck Girder Partial Depth Intermediate Diaphragm (PDF 100KB) (DWG 84KB)
5.6-A5-10 WF Thin Deck Girder Full Depth Intermediate Diaphragm (PDF 98KB) (DWG 48KB)
Wide Flange Deck Girders
5.6-A6-1 WF Deck Girder Details 1 of 4 (PDF 91KB) (DWG 41KB)
5.6-A6-2 WF Deck Girder Details 2 of 4 (PDF 88KB) (DWG 74KB)
5.6-A6-3 WF Deck Girder Details 3 of 4 (PDF 94KB) (DWG 68KB)
5.6-A6-4 WF Deck Girder Details 4 of 4 (PDF 120KB) (DWG 121KB)
5.6-A6-5 WF Deck Girder End Diaphragm Details (PDF 130KB) (DWG 72KB)
5.6-A6-6 WF Deck Girder L Abutment End Diaphragm Details (PDF 1115KB) (DWG 128KB)
5.6-A6-7 WF Deck Girder Diaphragm at Intermediate Pier Details (PDF 108KB) (DWG 71KB)
5.6-A6-8 WF Deck Girder Full Depth Intermediate Diaphragm (PDF 78KB) (DWG 52KB)
Wide Flange Deck Girders (UHPC)
5.6-A6-10 WFDG UHPC Girder Details 1 of 5 (PDF 426KB) (DWG 143KB)
5.6-A6-11 WFDG UHPC Girder Details 2 of 5 (PDF 103KB) (DWG 87KB)
5.6-A6-12 WFDG UHPC Girder Details 3 of 5 (PDF 100KB) (DWG 90KB)
5.6-A6-13 WFDG UHPC Girder Details 4 of 5 (PDF 109KB) (DWG 166KB)
5.6-A6-14 WFDG UHPC Girder Details 5 of 5 (PDF 115KB) (DWG 127KB)
5.6-A6-15 WFDG UHPC End Diaphragm Details (PDF 118KB) (DWG 110KB)
5.6-A6-16 WFDG UHPC L Abutment End Diaphragm Details (PDF 115KB) (DWG 86KB)
5.6-A6-17 WFDG UHPC Intermediate Diaphragm (PDF 115KB) (DWG 86KB)
5.6-A6-18 WFDG UHPC Full Intermediate Diaphragm (PDF 68KB) (DWG 96KB)
Deck Bulb Tee Girders
5.6-A7-1 Deck Bulb Tee Girder Schedule (PDF 112KB) (DWG 74KB)
5.6-A7-2 Deck Bulb Tee Girder Details 1 of 2 (PDF 126KB) (DWG 153KB)
5.6-A7-3 Deck Bulb Tee Girder Details 2 of 2 (PDF 126KB) (DWG 114KB)
Slabs
5.6-A8-1 Slab Girder Details 1 of 3 (PDF 129KB) (DWG 115KB)
5.6-A8-2 Slab Girder Details 2 of 3 (PDF 82KB) (DWG 134KB)
5.6-A8-3 Slab Girder Details 3 of 3 (PDF 88KB) (DWG 77KB)
5.6-A8-4 Slab Girder Fixed Diaphragm (PDF 90KB) (DWG 80KB)
5.6-A8-5 Slab Girder End Diaphragm (PDF 89KB) (DWG 81KB)
5.6-A8-6 Slab Girder Framing Plan and Typical Section (PDF 124KB) (DWG 49KB)
Tub Girders
5.6-A9-1 Tub Girder Schedule and Notes (PDF 671KB) (DWG 102KB)
5.6-A9-2 Tub Girder Details 1 of 3 (PDF 145KB) (DWG 128KB)
5.6-A9-3 Tub Girder Details 2 of 3 (PDF 69KB) (DWG 49KB)
5.6-A9-4 Tub Girder Details 3 of 3 (PDF 55KB) (DWG 37KB)
5.6-A9-5 Tub Girder End Diaphragm on Girder Details (PDF 63KB) (DWG 59KB)
5.6-A9-6 Tub Girder Raised Crossbeam Details (PDF 74KB) (DWG 55KB)
5.6-A9-7 Tub SIP Deck Panel Girder End Diaphragm on Girder Details (PDF 77KB) (DWG 56KB)
5.6-A9-8 Tub SIP Deck Panel Girder Raised Crossbeam Details (PDF 85KB) (DWG 55KB)
5.6-A9-9 Tub Girder Bearing Details (PDF 62KB) (DWG 32KB)
Stay-In-Place Deck Panel
5.6-A10-1 Stay-In-Place (SIP) Deck Panel Details (PDF 80KB) (DWG 51KB)
Post Tensioned Spliced Girders
5.9-A1-1 WF74PTG Spliced Girder Details 1 of 5 (PDF 76KB) (DWG 52KB)
5.9-A1-2 WF74PTG Spliced Girder Details 2 of 5 (PDF 69KB) (DWG 88KB)
5.9-A1-3 Spliced Girder Details 3 of 5 (PDF 68KB) (DWG 98KB)
5.9-A1-4 WF74PTG Girder Details 4 of 5 (PDF 99KB) (DWG 47KB)
5.9-A1-5 Spliced Girder Details 5 of 5 (PDF 74KB) (DWG 99KB)
5.9-A2-1 WF83PTG Spliced Girder Details 1 of 5 (PDF 70KB) (DWG 65KB)
5.9-A2-2 WF83PTG Spliced Girder Details 2 of 5 (PDF 116KB) (DWG 94KB)
5.9-A2-4 WF83PTG Spliced Girder Details 4 of 5 (PDF 72KB) (DWG 47KB)
5.9-A3-1 WF95PTG Spliced Girder Details 1 of 5 (PDF 69KB) (DWG 103KB)
5.9-A3-2 WF95PTG Spliced Girder Details 2 of 5 (PDF 117KB) (DWG 96KB)
5.9-A3-4 WF95PTG Spliced Girder Details 4 of 5 (PDF 83KB) (DWG 117KB)
5.9-A4-1 Trapezoidal Tub Girder Bearing Details (PDF 76KB) (DWG 57KB )
5.9-A4-2 Tub Spliced Girder Details 1 of 5 (PDF 70KB) (DWG 55KB )
5.9-A4-3 Tub Spliced Girder Details 2 of 5 (PDF 90KB) (DWG 62KB )
5.9-A4-4 Tub Spliced Girder Details 3 of 5 (PDF 69KB) (DWG 65KB )
5.9-A4-5 Tub Spliced Girder Details 4 of 5 (PDF 73KB) (DWG 54KB )
5.9-A4-6 Tub Spliced Girder Details 5 of 5 PDF 72KB) (DWG 50KB )
5.9-A4-7 Tub Girder End Diaphragm on Girder Details (PDF 81KB) (DWG 65KB)
5.9-A4-8 Tub Spliced Girder Raised Crossbeam Details (PDF 90KB) (DWG 59KB)
5.9-A5-1 P.T. Trapezoidal Tub SIP Deck Panel Spliced Girder Details 1 of 5 (PDF 80KB) (DWG 58KB)
5.9-A5-2 P.T. Trapezoidal Tub SIP Deck Panel Spliced Girder Details 2 of 5 (PDF 97KB) (DWG 63KB)
5.9-A5-3 P.T. Trapezoidal Tub SIP Deck Panel Spliced Girder Details 3 of 5 (PDF 74KB) (DWG 59KB)
5.9-A5-4 P.T. Trapezoidal Tub SIP Deck Panel Spliced Girder Details 4 of 5 (PDF 73KB) (DWG 54KB)
5.9-A5-5 P.T. Trapezoidal Tub SIP Deck Panel Spliced Girder Details 5 of 5 (PDF 72KB) (DWG 51KB)
5.9-A5-6 Trapezoidal Tub SIP Deck Panel Girder End Diaphragm on Girder Details (PDF 86KB) (DWG 67KB)
5.9-A5-7 Trapezoidal Tub SIP Deck Panel Spliced Girder Raised Crossbeam Details (PDF 94KB) (DWG 60KB)
Chapter 6 - Structural Steel
6.4-A1 Example Framing Plan (PDF 53KB) (DWG 38KB)
6.4-A2 Example Girder Elevation (PDF 61KB) (DWG 56KB)
6.4-A3 Example Girder Details (PDF 76KB) (DWG 75KB)
6.4-A4 Steel Plate Girder Example - Field Splice (PDF 75KB) (DWG 72KB)
6.4-A5 Example - Crossframe Details (PDF 66KB) (DWG 62KB)
6.4-A6 Example - Camber Diagram (PDF 73KB) (DWG 76KB)
6.4-A7 Steel Plate Girder Example - Roadway Section (PDF 71KB) (DWG 81KB)
6.4-A8 Steel Plate Girder Example - Slab Plan (PDF 71KB) (DWG 60KB)
6.4-A9 Example – Handrail(PDF 79KB) (DWG 89KB)
6.4-A10 Example - Box Girder Geometrics and Proportions (PDF 83KB) (DWG 75KB)
6.4-A11 Example - Box Girder Details (PDF 77KB) (DWG 87KB)
6.4-A12 Example - Box Girder Pier Diaphragm Details (PDF 99KB) (DWG 75KB)
6.4-A13 Example - Box Girder Miscellaneous Details (PDF 79KB) (DWG 75KB)
6.4-A14 Example - Access Hatch Details (PDF 66KB) (DWG 96KB)
6.4-A15 NGI-ESW CVN Impact Test for Heat Affected Zone (PDF 86KB) (DWG 85KB)
Standard specifications for bridges and structures are in Division 6 Structures (PDF 698KB) of the Standard Specifications for Road, Bridge, and Municipal Construction.
BridgeLink, BRIDG and other software applications
Bridge Design & Bridge Asset Management: 360-705-7200
Bridge Preservation: 360-570-2555
| Title/Specialty | Name | Phone |
|---|---|---|
| Bridge design engineer | Bijan Khaleghi | 360-705-7181 360-489-2706(c) |
| Concrete specialist | Anthony Mizumori | 360-705-7228 |
| Structural steel specialist | Geoff Swett | 360-705-7157 |