Highway Design - Design Memos

If you would like to receive notification of Design Memorandums as they are released please send us your: Name, Company, Address, Phone Number, and Email Address. Email Information Here
DESIGN MEMO NO.	DATE	POLICY EFFECTIVE DATE	DESIGN MEMO NAME	REMARKS
01-08	04/21/2008	Beginning with July 2008 Letting	Guidance for the Use of Uniformed Law Enforcement Officers in Highway Work Zones	In conjunction with the regulations set forth as part of SAFETEA-LU Subpart K to 23 CFR part 630, attached is the "Guidance for the use of Uniformed Law Enforcement Officers in Highway Work Zones". As can be seen from the guidance document, KYTC's project teams should address the use of Uniformed Law Enforcement Officers in highway Work zones as a component of the Traffic Management Plan (TMP) prepared for each project. Please begin to address this item in the TMP no later than the July 2008 project letting.
03-07	12/13/2007	01/01/2007	Crash Cushion Type VI Class B and Class C, and Crash Cushion Type VII Class B and Class C Standard Drawings RBE-040 and RBE-060	As announced in Design Memorandum No. 02-07, Standard Drawings Revision No. 1 to Reprint No. 9 is being published and will be effective on January 1, 2008 and thereafter. In the Revision, new classes have been created for the Crash Cushion Type VI and VII. The two new classes for these crash cushions are Class B and Class C.
02-07	11/26/2007	01/01/2008	Standard Specifications for Road and Bridge Construction Edition of 2008 Standard Drawings Revision No. 1 to Reprint No. 9	The Kentucky Department of Highways intends to publish the new Standard Specifications for Road and Bridge Construction Edition of 2008 and Standard Drawings Revision No. 1 to Reprint No. 9. These documents will be effective with all applicable projects let for construction on January 1, 2008 and thereafter.
01-07	07/30/2007	Please note the implementation dates on the last page of the Policy	Implementation of the Cabinet's and Procedures for Safety and Mobility of Traffic through Work Zones	This revised Policy will supplement the information in Section 204 of the Highway Design Guidance Manual, and will supersede any conflicting parts. There are substantial changes in this Policy. Please note the implementation dates on the last page of the Policy
6A-99	04/04/07	June 2007 Letting	Pavement Design Guide Update For project off the National Highway Systems, Less than 20,000,000 Equivalent Single Axle Loads, less than 15,000 ADT, and Less than 20% Truck	This memorandum is being issued to advise of an update to Design Memorandum 6-99. This Design Memorandum 6A-99 supersedes Design Memorandum 6-99 for all design activities performed by District Design and Consultant Engineer personnel.
18B-05	01/16/07	Beginning with March Letting	Supplemental Electronic Project Files	The main request of the KAHC Grading Committee was that the contractors be allowed access to all available electronic project files before the letting. Previously the "Supplemental Pre-Bid" information was made available for use during the bid process, and "Supplemental Post-Bid" information was given only to the awarded contractor. Beginning with the March 2007 letting, all supplemental electronic project files will be made available to the contractors before the letting. The contractors will have to sign a disclaimer before they get the electronic data. The Department is making these files available to contractors and assumes no responsibility for their accuracy.
05-06 Design Memo	12/08/06	Date of Memo	Omni-Directional Breakaway Support System for Type 1 Posts Supporting multi-post Sheeting Signs located within the clear zone.	Design memorandum No.14B-04 states that all projects let to contract after July 1. 2006 shall utilize omni-directional breakaway sign supports, for all installations of large multi-post signs located within the clear zone, and not protected by crashworthy barriers. to implement this new Highway Design policy, an entry, for "Type D Breakaway Sign Support Systems for Type 1 Post" has been added to the outline of "Approved Materials' maintained by the Division of Materials.
04-06 Design Memo	12/04/06	Effective January Letting	ADA Compliance on Sidewalk, Curb Ramps, and Driveway Access	Three Standard Drawings (ERPM150, ERPM152, & ERPM170) have been modified to strengthen their compliance with the Federal Americans with Disabilities Act (ADA) and Americans with Disabilities Act Accessibility Guidelines for Buildings and Facilities (ADAAG). Sidewalks, curb ramps, and driveway access shall be designed, constructed, operated and maintained so that all pedestrians, including people with disabilities, can travel safely and independently.
03-06 Design Memo	12/07/06	Effective 01/01/07	Electronic Drainage Folder Submittal Requirements	Effective January 1, 2007, the policy of this Cabinet shall be to require the submittal of dramage information in electronic format in accordance with PDF (Portable Document Format) standards. The PDF file format has been proven to be a universal format in the preparation of project documents that are distributed via the internet or other media and as a format that lends itself well for project archival. All future drainage folder submittals shall be in PDF.
02-06 Design Memo & 05-06 Construction Memo	8/11/06	10/27/06	Construction and Design Joint Memorandum	In order to comply with the Kentucky Division of Water (DOW) requirements for KPDES permits for contracts which disturb one or more, the following changes for submitting KPDES notices of intent (NOI), preparing the appropriate Best Management Practices (BMP) plan, and filing the notice of termination (NOT) will be effective beginning with the October 27, 2006 letting.
1-06	8/15/06		Fuel, Lot Pay, and Asphalt Adjustment Estimates	Attached memo from Divisions of Construction, Highway Design and Maintenance... line item adjustments for Fuel, Lot Pay and Asphalt Adjustments are to be incorporated into the proposal as bid items...
18-05A	3/08/05	4/1/06	Electronic Files Submittal Checklist	As per Design Memorandum 18-05... It is recognized that many projects currently under development may not have all the electronic project files requested. Therefore, a checklist has been created...
18-05	12/29/05	4/1/06	Electronic Files Submittal with the Final Contract Plans	Certain electronic files are required to be delivered with the submission of final contract plans to the Central Office Division of Highway Design.
17-05	11/18/05	1/20/06	Guardrail End Treatment Type 1	Enclosed is a revision of the guardrail End Treatment Type 1 drawing that shows its installation using hinged break away and/or steel yeilding posts.
15-05	10/24/05	5/1/06	HD-1500, Additional Topics Chapter	The intensive rewrite of the Highway Design Manual has been completed. The chapters have been given to Policy Support Branch, which oversees the development and administration of the Transportation Cabinet's policy guidance manuals program.
14-05	10/24/05	5/1/06	HD-200, Administrative Procedures	The intensive rewrite of the Highway Design Manual has been completed. The chapters have been given to Policy Support Branch, which oversees the development and administration of the Transportation Cabinet's policy guidance manuals program.
13-05	04/21/05	1/1/06	Trns*port Estimator	The Kentucky Transportation Cabinet is starting to implement some of the Trns*port software modules.
12-05	04/21/05	Date of Memo.	Best Management Practice (BMP)	The following BMP shall be used during the construction and the maintenance/operations of all roads listed on the National Highway System located in Karst areas and on all roadways which may impact a significant resource as determined by the DEA.
03A-05	04/21/05	Date of Memo.	Drainage Manual	Erosion Control Plan Development Process changes.
11-05	04/21/05	7/1/05	Omni-Directional Breakaway Support System	Omni-Directional Breakaway Support System for I-Beam posts supporting large multi-ppost signs located whithin the clear zone.
10-05	04/21/05	7/1/05	HD-600, Guidance on Public Involvement	The Highway Design Manual Public Involvement Chapter.
09-05	04/21/05	8/1/05	Revisions to Fill Height Requirements	Revisions to Fill Height Requirements
04A-05	04/21/05	8/5/05	Revision of Special Provision 69	Revision of Special Provision 69 (Embankments at Bridge End Bent Structures) Standard Drawing RGX-100 and Standard Drawing RGX-105
08-05	04/21/05	Date of Memo.	Contract Time	Please utilize this directive on all projects beginning with July 2005 Letting. The project Development Team can choose to utilize in earlier lettings if it can be done without delaying the project letting.
6B-04	04/15/05	07/01/05	Right-of-Way Monumentation	After July 1, 2005, any project that has not submitted right of way plans shall establish and monument the right-of- way boundaries for the newly acquired right-of-way boundaries. We will not permanently monument existing right-of-way . Monumentation shall be placed in accordance with the Standard Drawings and the Special Note for Right-of-Way Monuments (See attached). Monumentation includes right of way monuments, right-of-way witness monuments, and witness posts. The intent is to define the right of way boundaries on our plans and in the field.
07-05	04/05/05	10/01/05 Right of Plan delivery	HD-1100 Access Management Guidance	Projects that have advanced beyond Preliminary Line and Grade that will have Right-of-Way Plans submitted prior to 10/01/05 may use the criteria and features from the previous Highway Design Manual.
06-05	04/17/05	Date of Memo.	Constructability Review for Projects	This procedure should be utilized on projects effective with the date of this Design memorandum. Only those projects that have advanced past Right-of-Way Plan submittals are exempt.
05-05	04/01/05	Date of Memo.	Project Datum Factor Other Survey Notes	The location of the Projects Datum Factor needs to be placed on the Coordinate Control Sheet(s) in the plan set. This factor is to be included in every plan set that utilizes Project Datum Coordinates. KYTC has a standard cell “NCCS4” or “NCCS¹” where the Project Datum Factor is to be published.
04-05	01/27/05	08/05/05	Revision of Special Provision 69 (Embankments at Bridge End Bent Structures)	Any questions regarding this Memorandum should be directed to Division of Materials-Geotechnical Branch.
03-05	01/25/05	Date of Memo.	Drainage Manual-Revision in the Erosion Control Plan Development Process	Design Comment – The ECP shall contai8n a recommendation by the Project Manage to indicate the location and extent of the erosion control blanket. A quantity to reflect this recommendation shall be shown on the Plans. Refer to Drainage Guidance Manual, Chapter 10- Erosion Control
02-05	01/25/05	07/01/05	HD-1300 Right of Way Guidance	Projects let to contract after July1, 2005, must comply with Right of Way Guidance chapter unless otherwise approved by the Director of Highway Design
01-05	01/25/05	Date of Memo.	HD-100 General Information Chapter	This specific Design Memorandum deals with HD-100, the General Information Chapter of the Highway Design Manual. A copy of HD-100 can be obtained from the Division of Highway Design’s Web page at http://www.kytc.state.ky.us/design/design/designmanual/.
17-04	12/14/04	Date of Memo.	Design Procedures for Roadbed Stabilization with Geogrids	Geogrids are a category of geosynthetics that have gained increasing acceptance in road construction. The use of geogrids has demonstrated the potential to reduce the required thickness of aggregates for some situations.
16-04	12/14/04	Date of Memo.	2005 AASHTO Policy on Geometric Design of Highways and Streets	Until we receive additional guidance from the FHWA, Kentucky will continue to use the 2001 Green Book as the geometric design standard for Kentucky. Consistent with earlier guidance. We will review modifications to the new 2005 ”Green Book” as well and will make a decision regarding adopting the new 2005 “Green Book” once we better understand the changes with the 2005 edition and the effects on Kentucky projects.
15-04	12/14/04	07/01/05	Project Development Guidance on Environmental Considerations	Projects let to contract after July 1, 2005, must comply with the Project Development Guidance on Environmental Considerations unless otherwise approved by the Director of Highway Design
14-04	12/14/05	07/01/05	Project Development Guidance on Signing and Pavement Markings	Projects let to contract after July 1, 2005, must comply with the Project Development Guidance on Signing and Pavement Markings unless otherwise approved by the Director of Highway Design
6A-04	12/14/05	Date of Memo.	Suspension of Design Memo 6-04 Right of Way Monumentation	Effective with the date of this memorandum, implementation of Design Memorandum 6-04 is temporarily suspended. If there are specific comments or issues (positive or negative) that are pertinent to the eventual implementation of a right-of-way Monumentation requirement similar to that identified in Design Memorandum 6-04, please forward these comments in writing or electronically to: Mr. Perry Semones
13-04	07/29/04	07/01/05	Survey Guidance	Projects let to contract after July 1, 2005, must comply with this Survey Guidance unless otherwise approved by the Director of Highway Design
12-04	07/29/05	07/01/05	Underground Utility Location	Projects let to contract after July 1, 2005, must comply with this memorandum unless otherwise approved by the Director of Highway Design. Projects that will be let to contract prior to July 1, 2005, may implement the policy written in this Design Memorandum if determined necessary or appropriate by the Project Manage/Project Team.
11-04	07/29/05	07/01/05	Permits and Certifications Guidance	Projects let to contract after July 1, 2005, must comply with these Permits and Certifications Guidance documented herein unless otherwise approved by the Director of Highway Design.
10-04	07/29/05	Date of Memo.	Design Guidelines for Projects Involving Railroads	Projects let to contract after July 1, 2005, must comply with these Design Guidelines for Projects Involving Railroads documented herein unless otherwise approved by the Director of Highway Design.
09-04	07/29/04	Date of Memo.	Roadside Design Guidelines	Projects let to contract after July 1, 2005, must comply with these Roadside Design Guidelines documented herein unless otherwise approved by Director of Highway Design.
08-04	04/16/04	Date of Memo.	Errata for 2002 Roadside Design Guide	Technical revisions have been made to the Roadside Design (RDG), 3 rd Edition. The errata attached below are a listing of these revisions. Please replace the existing with the updated page so that your RDG will be accurate and current.
07-04	04/16/04	Date of Memo.	Submittal of Right of Way Plans and Right of Way Plan Revision to Central Office	A copy of the right-of –way revision sheet shall be submitted along with the memorandum from the project manager and the unmarked white prints to the Central Office Division of Right-of-way and Utilities. These changes are being included in the Highway Design Manual.
06-04	04/05/05	Date of Memo.	Right of Way Monumentation	All right-of-way monuments shall be under the direct supervision of a Kentucky Licensed Professional Land Surveyor.
1A-03	02/04/04	07/01/04	Geometric Design Guidelines Addendum	Projects let to contract after July 1, 2004, must comply with these Geometric Design Guidelines unless otherwise approved by the Director of Highway Design.
05-04	01/27/2004	These codes are to be used on all projects effective with the March 2004 Letting	Bid Item Codes	Bid item codes are maintained by the P.S.&E. Section of the Division of Highway Design. Questions, concerns, or requests for assignment of new bid item codes should be directed to that office.
04-04	02/04/04	Date of Memo.	Pavement Design Guidelines	Projects let to contract after July 1, 2004, must comply with these guidelines unless otherwise approved by the Director of Highway Design.
03-04	01/27/04	Date of Memo.	Depiction of Limits for Flowable Fill on Pipe Sheets	The purpose of this memorandum is to provide guidance in regard to the limits for placement of flowable fill.
02-04	02/04/04	Date of Memo.	Intersection Design Guidelines	Projects let to contract after July 1, 2004, must comply with Intersection Design Guidelines unless otherwise approved by the Director of Highway Design.
01-04	01/27/04	Date of Memo	Revisions to AASHTO Deceleration Lengths for 2001 Green Book	Effective with this memo
01-03	05/01/03	07/01/04	Geometric Design Guidelines	Project let to contract after July 1, 2004 must comply with these Geometric Design Guidelines unless otherwise approved by Director of Highway Design.
05-02	10/23/02	Date of Memo	Apparent Shrinkage and Swell Factors	Effective also with this memorandum, shrink and swell factors for all projects should be removed from earthwork calculations, and each project should report the amounts for embankment and excavation ONLY, along with totals for ditch excavation, embarkment benching, etc. There should be NO calculation shown to determine whether additional embankment is required or whether there will be waste material. As before, for projects where final plans have already been submitted, the Plan Processing Section will make the appropriate changes. For all other projects, the designer should make changes to plans prior to submittal
04-02	08/26/02	07/01/04	Implementation Guidance for the 2001 AASHTO Green Book	Projects that have advanced beyond Preliminary Line and Grade, but will be let to contract prior to July 1, 2004, may use the criteria and features of the 1994 Edition of the Green Book. However, it is allowable to use any standard in the 2001 Green Book for these type projects if necessary or desired by the Project Manager Coordinator/Project Team.
03-02	01/09/02	Date of Memo.	Signatures on Plans and Project Title Blocks	The revisions detailed in this memorandum shall be in affect for all Right of Way and Final Roadway Plans submitted after March 1, 2002. Modifications have been made to the Department’s Standard Cell Library in order to reflect the above changes. The Standard Cell Library can be obtained from the Division of Highway Design’s Web page. Any questions regarding this memorandum should be directed to this office
02-01	06/29/01	Date of Memo.	Roadway Special Notes, Special Provisions, and General Notes	THIS MEMORANDUM VOIDS AND SUPERSEDES DESIGN MEMORANDUM NO. 2-98 AND SUPPLEMENTS THERETO.
02-00	11/04/00	Date of Memo.	Pipe Cover Height Charts	Full size reproducible detail sheets for use in roadway plans are available upon request from the Division of Highway Design, Standard Drawing Section or from the Division of Highway Design web page.
01-00	01/23/00	These codes are to be used on all projects effective with the March, 2000 letting .	Bid Items Codes	The 2000 Bid Item Codes are now available on the Division of Highway Design’s web page.
05-99	07/08/99	The "AASHTO-FHWA Agreement on the NCHRP 350 Implementation" requires an approved temporary barrier wall to be used by October 2000.	Temporary Barrier Wall	The attached Concrete Barrier Type 9T drawing has been placed on the Sepia List and full size reproducible are available from the Standard Drawing Section of the Division of Highway Design. This will be added to the Standard Drawings with the next revision.
04-99	06/16/99	July 2000	CADD STANDARDS FOR HIGHWAY PLANS	All NEW project starts with a construction letting after July 2000 shall comply with the CADD standards. The Project Team shall decide whether to convert current projects with consideration to project schedule.
03-99	06/11/99	Date of Memo.	Apparent Shrinkage and Swell Factors	Central Office Plan Processing Section will add this note on all projects for which final plans have already been submitted effective with the August letting. All final plans that have not yet been submitted shall have the note added by the designer. Please address any questions to this office.
11-98A	02/03/99	Date of Memo.	Geometric design Criteria English Update	The metric Geometric Design Criteria, contained in the current Design Manual, may continue to be used for those projects already developed in metric terms and intended to be let to construction with the metric usage. The Design Manual is currently being updated in accordance with our directives to convert back to English. More detailed information on such items as the superelevation charts will be included in the manual update. Any questions regarding this memo or our shift back to English should be directed to this office.
11-98	11/04/98	Date of Memo.	English Conversion	English geometric standards are currently being updated and will be available later this year.
10-98	09/11/98	10/01/98	NCHRP 350 Guardrail and Safety Devices	The revised drawings have been placed on the Active Sepia List and full size reproducibles are available from the Standard Drawing Section of the Division of Highway Design. These will be added to the Standard Drawing with the next revision to that manual.
4A-98	06/16/98	Date of Memo.	New Empower Kentucky Directions	Discussions are continuing on new ways to improve this Division’s operations and time to perform any of the routine functions. The following changes are to be implemented immediately.
09-98	08/24/98	Date of Memo.	Waste Sites	Senate Bill No. 211 which was passed during the last legislative session amended KRS 176.050 to require designers to identify potential waste sites "for a city, county, or other governmental entity to turn into an industrial park upon completion of the road project…." Sites must be "at least four (4) acres in size, along the proposed new route. The Department shall consult with the appropriate elected officials to identify waste sites along the proposed new route that may be potential industrial park sites."
08-98	03/04/98	Date of Memo.	Erosion Control for Highway Construction	A new Chapter 10 of the Drainage Manual has been prepared to address Erosion Control issues. A copy of this chapter is attached. Also in reference to this chapter are new drawings available on the sepia list from the Standard Drawings Section "Silt Check Type I Straw Bales", "Silt Check Type II and III Crushed Stone", Temporary Silt Fence", and "Temporary Silt Fence with Woven Wire Fabric."
07-98	02/10/98	Date of Memo.	Phase I Design	This new process is considered immediately effective and should be considered for any projects that meet the cited conditions.
06-98	01/28/98	Date of Memo.	Environmental Checklists	Effective immediately, environmental checklists will no longer be required to be attached to the inspection reports. Checklists will now be required to be submitted with Right-of-Way Plans and Final Plans submission on federally funded projects. The checklist will be mailed directly to the Director, Division of Environmental Analysis in both cases. Copies of the checklist will be sent to the Central Office Location Engineer and the Central Office Programming Staff. A copy will also be sent to the Director, Division of Right-of-Way with the Right-of-Way Plan submittal. Desirably the checklist should be sent 30 days prior to the actual Right-of-Way Plan submittal to allow review time in advance of the actual demand for the federal funding.
05-98	02/11/98	Date of Memo.	Traffic Management	All measures discussed in this memo should be put into effect immediately. Items applicable to the 1998 Standard Specifications are to be effective with the April, 1998 letting. However, if the Designer wishes to utilize any of the items included in that document prior to that date, it may be added by special note and is encouraged.
04-98	01/08/98	Date of Memo.	Empower Kentucky Directions	All projects shall be scoped at least one year prior to the authorization of project design. The scoping will be utilized to address project issues including purpose and need, termini, deficient conditions to be addressed, refined cost estimates by phase, identification of critical environmental issues or any special issues or concerns, and an expected fiscal year schedule for the major phases. This activity will be required for all projects beginning with FY 2000 design. The form for scoping is attached and is meant to replace Exhibit 03-03 in the Design Manual. When completed, copies of this form is to be submitted to Central Office Design and Programming. The Statewide Preliminary Design Consultant may be utilized for these scoping efforts if requested by the District Preconstruction Engineer.
03-98	01/06/98	Date of Memo.	Design Exceptions for Vertical Clearance on Interstates	Effective immediately, it will be necessary to coordinate all design exceptions for vertical clearances on the interstate with the Military Traffic Management Command Transportation Engineering Agency. A clearance of 4.9 meters over the entire roadway width, including the useable width of shoulders, will be required on all rural interstate routes. The 4.9 meter clearance will also be required for the urban interstate routes identified on the attached maps. 4.3 meter clearance will be required on other urban interstates not designated on the maps.
02-98	02/24/98	Date of Memo.	Roadway Special Notes, Special Provisions, and General Notes	This memorandum voids and supersedes Design Memorandum No. 2-97 and supplements thereto.
01-98	02/24/98	Date of Memo.	Bid Item Codes	This memorandum voids and supersedes Design Memorandum No. 1-97 and supplements thereto.
14-97	12/02/97	Date of Memo	Crash Cushions Type VI, IX and IX-A	This memo voids Section 61-08.03, CRASH CUSHION TYPE IX AND IX-A, in the Departments current Division of Highway Design Guidance Manual.
13-97	12/02/97	12/01/97	Transmittal of Right-of-Way and Utility Plans and Right-of –Way and Utility Plan Revisions	The Designer is now responsible for providing all required copies directly to the Division of Right-of-Way and Utilities regardless of whether the final roadway plans are currently in the District or already submitted to Central Office. If the roadway plans have already been submitted to Central Office, the Designer will also be responsible for providing corrected sheets for the final plans or assuring that the corrections are made on those plans.
12-97	11/10/97	01/1998 Letting the Traffic Control Coordinator	Traffic Control Coordination	Beginning with the January 1998 Letting the Traffic Control Coordinator shall be notified of all road and/or lane closures that may be expected on any major project. This notification shall be the responsibility of the Project Manager and must be provided 90 days prior to letting with an indication of the expected time frames for such closures.
11-97	12/02/97	Date of Memo	Engineering Agreements/Contract Modifications	When a change order is requested, the consultant shall be responsible for providing a brief explanation (desirably less than one page) for the need for the change order. The explanation must be written such that someone not familiar with the project may understand the purpose of the request. It must make clear why the requested work was not covered with the original agreement or in previous change orders. It must also address whether the currently contracted dates are to be affected by the change and if so, new projected dates of completion must be provided. This information is to be provided to the Project Manager who will endorse it to the Director, Division of Professional Services. Timely responses to all requests for change orders are to be given.
10-97	09/23/97	Date of Memo.	Pavement Design Guide for Projects Off the National Highway System, Less Than One Kilometer (0.6 mile) in Length, and for Less Than 5,000,000 Equivalent Single Axel Loads	As a means of facilitating implementation of this Guide and to provide general assistance to District staff in the area of pavement design, pavement design staff listed on the attachment are herein assigned to the respective Districts. Design staff in the Districts and Consultant staff are encouraged to contact these persons for assistance in pavement design issues.
09-97	06/30/97	Date of Memo.	Right of Way Deed Descriptions	Examples of appropriate deed descriptions are attached. These changes should be made on all projects for which Right of Way Plans have not been submitted as of the date of this memorandum.
08-97	05/27/97	Date of Memo.	Pre-printed Plan Sheets	This is to adise that when current stocks of pre-printed plans sheets are depleted, they will no longer be available through this Division or the Division of Service and Supply. All forms are presently available in the CADD cell library and may be printed from this source when needed. Any questions regarding this direction may be addressed to Bill Gulick or me.
06-97	02/21/97	Date of Memo.	Public Involvement Revisions	Any questions may be directed to this office (Division of Highway Design) and the Public Hearing Coordinator.
05-97	02/04/97	Date of Memo.	Metal End Sections Type 1 and Type 2 (Parallel Structures) Type 3 and Type 4 (Cross Structures)	Full size reproducibles for use in roadway plans are available upon request from the Division of Highway Design, Standard Drawing Section.
04-97	01/22/97	Date of Memo.	Plan Development	The following changes in plan development are effective immediately:
03-97	01/13/97	Date of Memo.	Scour Potential for Proposed Bridges	Any questions concerning this Memorandum should be addressed to Gary Poole, Division of Highway Design, Jim King, Division of Bridge Design, or Bill Broyles, Division of Materials.
07-96	07/26/96	Date of Memo.	Checklist for Categorical Exclusion Projects	Effective immediately, the attached form shall be utilized for the review of Categorical Exclusions on all applicable projects. Discard previous versions of this form.
06-96	07/24/96	Date of Memo.	Pipe Cover Height Tables	The new Cover Height Tables represent a significant change in how the Department deals with selecting pipe alternates, how pipe quantities are summarized, and how pipes are represented on pipe sheets. Attached, please find these new pipe Cover Height Tables which will be effective with the September, 1996 letting. Standard Drawings RDI-001, RDI-020, RDI-030 shall become void as of the effective date. Standard Drawing RDI-025 shall remain active.
05-96	06/10/96	Date of Memo.	Channel Habitat Improvement Structures (Dumped Stone), RDX-240-01 Channel Habitat Improvement Structures (Gabions), RDX-245-01	Full size reproducible detail sheets for use in roadway plans are available upon request from the Division of Highway Design, Standard Drawing Section.
4A-96	04/22/96	Date of Memo.	Revision of Traffic Standard Drawings	This memorandum is a supplement to Design Memorandum No. 4-96, dated 2-7-96, in which Lane Closure Case IV was voided. This was done in error. Attached, please find a revised drawing of Lane Closure Case IV (TSC-212-02).
04-96	02/07/96	Date of Memo.	Revision of Traffic Standard Drawings	Full size reproducibles, of the revised and new drawings, for use in roadway plans are available upon request from the Division of Highway Design, Standard Drawing Section.
03-96	02/07/96	Date of Memo.	Curve Widening & Superelevations Single Lane Pavement, RGS-001-04	Full size reproducibles for use in roadway plans are available upon request from the Division of Highway Design, Standard Drawing Section.
02-96	01/31/96	Date of Memo.	Roadway Special Notes, Special Provisions and General Notes	This Memorandum Voids And Supersedes Design Memorandum No. 2-95 And Supplements Thereto.
01-96	01/31/96	Date of Memo.	Bid Items Codes	This Memorandum voids and supersedes Design Memorandum No. 1-95 and supplements thereto.
07-95	07/27/95	Date of Memo.	New Guardrail End Treatment Type 4A Guardrail End Treatment Type 4	These standards will be modified to reflect the appropriate Guardrail End Treatments when the next revision is issued to the Standard Drawings.
06-95	07/10/95	Date of Memo.	Consultant Monthly Report	Upon completion of the response by the Project Engineers, copies of the report shall be sent to all involved persons; i.e. - discussion of environmental shall be sent to Environmental Analyses. In all instances, copies shall be sent to the consultant and to the Director, Division of Design. The Consultant Monthly Report shall be submitted starting in August, 1995.
05-95	06/13/95	Date of Memo.	Bridge Scour Calculations	Any questions generated by the application of this memorandum should be addressed to Gary S. Poole, Chief Drainage Engineer, Division of Highway Design or Charles So, Division of Bridge Design. This memorandum shall become void when superseded or its contents are placed in the appropriate design manual.
04-95	06/06/95	Date of Memo.	Environmental Procedures on State Funded Projects	As soon as possible following project auithorization, the potential project impact area should be investigated by the Project Engineer to determine the possible presence of wetlands, cultural resources, or other environmental concerns,. If any issues of environmental concern are identified, an immediate request for investigation should be submitted to: Director, Division of Environmental Analysis (Mail Code A-1) along with the project information noted in Table 1 below.
03-95	03/14/95	Date of Memo.	Guardrail End Treatment Type 1	Full size reproducibles for use in roadway plans are available upon request from this Division's Standard Drawing Section.