Article
Active Design Memos
Design Memos are published on the first Monday of each month. Where Monday is a State holiday, the memo is published the following Tuesday. All revisions to the Design Manual described in these memos have been incorporated into the current Indiana Design Manual (IDM). Memos appear on this page for a period of 1 year following the date of the memo. After 1 year, they are moved to the Archived Design Memos page. Memos that include a recurring special provision (RSP) or recurring plan detail (RPD) remain on this page as long as the associated RSP/RPD remains active. Superseded memos are archived immediately. The practice of distinguishing policy memos from techncial advisories was discontinued January 2018. This Page Last Updated: 02/03/2020 |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 20-02 | 01/07/20 | Ramp Maximum Grade | IDM Section 48-5.04(01) | Stage 3 submittal on or after January 7, 2020 | |
| 20-01 | 01/07/20 | Pavement Design -Indiana Design Manualreorganization | IDM Chapter 304 | Pavement Design Approval on or after January 7, 2020 |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 19-12 | 10/10/19 | Chapter 503 Maintenance of Traffic | Chapter 81, 82, and 83 | See Memo | |
| 19-11 | 10/10/19 | Proprietary Materials | None | N/A | |
| 19-10 | 09/05/19 | Terminal Joints | 17-5.09(01), 402-7.02(03), and 409-2.04 | Lettings on or after March 1, 2020 | |
| 19-09 | 09/05/19 | Preprint Changes | 14-1.02(05) | Contract Lettings on or after November 14, 2019 | |
| 19-08 Rev. | 09/05/19 rev. 10/23/19 | Bridge Railing | 404-4.0 | Stage 3 Submittal on or after September 5, 2019 | |
| 19-07 | 09/05/19 | Pedestrian Fence | 404-4.05 | Stage 3 Submittal on or after September 5, 2019 | |
| 19-06 | 09/05/19 | Practice Pointers | None | N/A | |
| 19-05 | 05/06/19 | Guardrail End Treatment and Impact Attenuator Spare Parts Packages | 17-4.12 (deleted) | Lettings on or after September 1, 2019 | |
| 19-04 | 05/06/19 | End Bent Details | 409-2.04(02) and 409-2.04(03), Figures 409-2A, 409-2C, 409-2D, 409-2E, 409-3A, and 409-3B | As Noted | |
| 19-03 | 05/06/19 | Tooth Joint at Terminal Joints | 409-2.04(01), Figure 409-2F (deleted) | Immediately |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 18-26 | 11/08/18 | Pedestrian Pushbutton and ADA Plan Details | 51-1.06(03) | Stage 3 Submittal on or after March 1, 2019 | |
| 18-25 | 11/08/18 | Engineering Assessment Manual | None | As noted | |
| 18-24 | 11/08/18 | Full Depth Reclamation (FDR) Projects and Rule 5 Permits | None | Lettings on or after January 1, 2019 | |
| 18-21 | 08/06/18 | Bundling HMA Quantities | None | Lettings on or after December 1, 2018 |
|
| 18-20 | 08/06/18 | Bridge Aesthetics Policy | None | Immediately | |
| 18-17 Rev. | 08/06/18 rev. 08/08/18 rev. 05/06/19 | Bridge Deck Overlays | None | Lettings on or after September 1, 2019 |
|
| 18-14 | 08/06/18 | Hydraulic Memo Templates | None |
Hydraulic Submittals on or after August 1, 2018 |
|
| 18-12 | 06/04/18 | Office of Hydraulics Review for LPA Projects | None | Lettings on or after July 1, 2018 |
|
| 18-11 | 05/09/18 | Pedestrian Crossing Treatment RRFB | Figure 51-7 O | Immediately | |
| 18-10 | 05/09/18 | Covering Conflicting Pavement Markings | 83-4.01(03) | Lettings on or after December 1, 2018 |
|
| 18-08 rev. | 05/09/18 rev. 05/16/18 | Geotechnical Waivers and Investigations for LPA Projects | None | Immediately |
|
| 18-06 | 03/05/18 | Development of FDR Pavement Projects as Partial 3R | 304-6.01 thru 304-6.03 | Immediately |
|
| 18-05 | 03/05/18 | Plan Note for TAC Approved ADA Inquiries | None | Stage 3 Submissions on or after April 2, 2018 |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 17-28 | 12/04/17 | Plant Growth Layer | None | Lettings on or after March 1, 2018 |
|
| 17-27 | 12/04/17 | Bridge-Length Culverts | None | Immediately | |
| 17-23 rev. | 10/02/17 rev. 02/05/18 | AASHTO LRFD Bridge Design Specifications | None |
Stage 2 Submission on or after August 1, 2018 |
|
| 17-20 | 09/05/17 | Complex Bridge Design Requirements | None |
Immediately |
|
| 17-19 | 09/05/17 | Next Level Signs | None |
Signs | Select Projects with Lettings on or after January 1, 2018 |
| 17-18 | 08/07/17 | Use of Geotextile in Geotechnical Applications | None |
Lettings on or after |
|
| 17-17 | 08/07/17 | Manual for Assessing Safety Hardware (MASH) and New W-beam Guardrail and Guardrail End Treatment Standards |
None |
Pay Items Associated with MGS W-Beam Guardrail and Related Systems | NHS Routes: Letting on or after January 1, 2018 Non-NHS Routes: Letting on or after July 1, 2018 |
| 17-16 | 08/07/17 | Permanent Metal Forms | 404-2.02, 404-2.03, Fig. 404-2B and 404-2C |
Sections 404-2.02(02), 404-2.02(03), 404-2.03(02), Figures 404-2B and 404-2C | Lettings on or after |
| 17-10 | 05/11/17 | Manual for Assessing Safety Hardware (MASH) and New W-beam Guardrail and Guardrail End Treatment Standards | None |
Midwest Guardrail System Assembly Figures, AASHTO/FHWA Joint Implementation Agreegement for MASH Memo | NHS Routes: Letting on or after January 1, 2018 |
| 17-04 | 03/16/17 | Culvert Asset ID Number | None |
Culvert Asset ID Numbering System | Stage 3 on or after May 2017 |
| 17-03 | 03/01/17 | Mechanically Stabilized Earth (MSE) Walls | Sections 402-6.02(02), 409-2.04(02), 409-3.03, Figures 409-2G and 410-5(0)C (New) | Sections 402-6.02(02), 409-2.04(02), 409-3.03, Figures 409-2G and 410-5(0)C (New) | As Noted |
| 17-02 | 02/02/17 | Rural Interstate Shoulder Width | None |
Immediately |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 16-35 | 11/21/16 | Undistributed Quantities | None |
Immediately | |
| 16-16 | 04/11/16 | Quantities | Sections 17-1.05, 17-4.06, 17-4.09 thru 17-4.10(03), 17-5.09, 17-6.0, Figures 17-5G thru -5G(02), 17-4D, 17-5I, 17-5J |
Section 17-1.05, Section 17-4.06, Sections 17-4.09 thru 17-4.10(03), Section 17-5.09, Section 17-6.0, Figures 17-5G thru -5G(02), 17-4D, 17-5I, 17-5J |
As Noted |
| 16-11 rev. | 03/17/16 Rev. 09/12/16 |
Temporary Erosion and Sediment Control | None |
PSE Checklist |
Lettings on or after September 1, 2016 |
| 16-10 | 03/16/16 | NEPA Compliance and Waterway Permitting for Bundled Projects | None | Immediately | |
| 16-06 | 03/08/16 | Portable Signals | 83-5.0 | Letting on or after September 1, 2016 | |
| 16-01 | 01/05/16 | Structure Number in ERMS, SPMS, and on Plans | None | Immediately |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 15-11 | 05/01/15 | Anchored Temporary Concrete Barrier | None | Letting on or after May 1, 2015 | |
| 15-08 | 04/07/15 | Title Sheet Signatures for Local Public Agency (LPA) Projects | None | Letting on or after August 5, 2015 |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 14-10 | 07/01/14 | Practical Design | 40-8.01, 40-8.04(01), Chapter 53, 55-3.0, 55-4.01(03), Figures 40-8B, 53-1 through 53-9, 55-3A through 55-3H | Immediately | |
| 14-05 | 04/02/14 | Policy and Procedure for Determination of Technical Infeasibility | None | Policy and Procedure for Determination of Technical Infeasibility | Immediately |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 13-10 | 04/15/13 | Roundabouts | 51-12.0 | Roundabout Design Checklist | Immediately |
| 13-09 | 04/12/13 | Small Structure Replacement, Guardrail Runout Length | Chapters 49 & 55 | RDG Table 5-10(b) | Preliminary Field Check on or after June 1, 2013 and as noted |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 12-21 | 10/05/12 | Use of AASHTO LRFD Bridge Design Specifications | 409-9.0 | Stage 2 Submission on or after 12/21/12 |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 11-12 | 07/08/11 | Metric-Units Plans | See Memo | Immediately | |
| 11-09 | 04/05/11 | High-Tension Cable-Barrier System (CBS) | 49-5.01(04) | RSP 627-R-546 RPD 627-R-546d |
Lettings on or after May 11, 2011 |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 05-34 | 11/9/05 | Concrete Railings & Moment Slabs at Mechanically Stabilized Earth (MSE) Wall Systems | 49-4.01(05) | 706-R-504 RSP & RPD | 02/15/10 |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 03-07 | 07/02/03 | Policy for Context Sensitive Solution | Unknown | Immediately |
| Memo Number | Memo Date | Subject | Affected IDM Section | Attachments | Effective Date |
| 01-14 | 12/10/01 | Water Main & Sanitary Sewer Construction in Contracts | Unknown | Immediately |