Highway Design Special Details

Please note that some of the files listed below are large and may take several minutes to download depending on your Internet connection.

Traffic Detail Sheets are provided at the bottom of this list.

Most of the Detail Sheets listed here were originally created with MicroStation v8i.  They are currently being updated to the newer version, MicroStation Connect.  If there is a link to a MicroStation DGN file, it will be followed by "v8i" or "MSC" to denote which version of MicroStation was used.

 

Highway Design Detail Sheets

  • Index of Sheets and General Notes
  • Format: pdf | dgn (MSC)
  • Revised 04/11/2024
  • Standard Symbol Sheets
  • Format: pdf | dgn (MSC)
  • Revised 02/28/2024
  • Erosion Control Strategies and Stabilization Matrix
  • Format: pdf | dgn (MSC)
  • Revised 02/29/2024
  • Wetland Plan Checklist
  • Format: pdf
  • Revised 11/30/2012
  • Sidewalk Curb Ramp Details
  • Format: pdf | dgn (MSC)
  • Revised 09/26/2023
  • Detectable Warning Device (DWD) Decision Making Flowchart
  • Format: pdf
  • Revised 08/16/2023
  • ADA Technical Infeasibility Form 18
  • Excel format 
  • Revised 06/20/2018
  • Lane Closure: Two Lane Roadway with Low Volumes (formerly TC-5)
  • Format: pdf | dgn (MSC)
  • Revised 09/26/2023
  • Driveways
  • Format: pdf | dgn (MSC)
  • Revised 02/25/2022
  • Curved Guardrail with CRT Posts
  • Format: pdf | dgn (MSC)
  • Revised 09/26/2023
  • Reset Block & Rail (Wood Post & Wood Block-Out)
  • Format: pdf | dgn (MSC)
  • Revised 09/26/2023
  • Rumble Strips Divided Highways
  • Format: pdf | dgn (MSC)
  • Revised 11/23/2022
  • Rumble Strips UnDivided Highways 1-4
  • Format: pdf | dgn (MSC)
  • Revised 11/23/2022
  • Guidance For Guardrail Design Applications
  • Format: pdf
  • Revised 11/11/2019
  • TL 3 Tapered EAGRT Platform Details for Guardrail < 2.50' from EP
  • Format: pdf | dgn (MSC)
  • Revised 02/25/2022
  • TL 2 Tapered EAGRT Platform Details for Guardrail < 2.50' from EP
  • Format: pdf | dgn (MSC)
  • Revised 02/25/2022
  • TL 3 Parallel EAGRT Platform Details for Guardrail ≥ 2.50' from EP
  • Format: pdf | dgn (MSC)
  • Revised 02/25/2022
  • TL 2 Parallel EAGRT Platform Details for Guardrail ≥ 2.50' from EP
  • Format: pdf | dgn (MSC)
  • Revised 02/25/2022
  • TL 2 - 25' EAGRT Platform Details
  • Format: pdf | dgn (MSC)
  • Revised 02/25/2022
  • Mid-Splice W-Beam Guardrail Stiffening Detail
  • Format: pdf | dgn (MSC)
  • Revised 06/05/2024
  • Single Faced Asymmetrical Transition Rail, Steel Post Detail
  • Format: pdf | dgn (MSC)
  • Revised 12/10/2024
  • RoadSide Delineation
  • Format: pdf | dgn (MSC)
  • Revised 03/11/2025 

Former Details that are now Standards

  • 31" Beam Guardrail Standard Section-Steel Posts & Hardware Details
  • Changed to GR-1
  • Guardrail Terminal Section - E2
  • Changed to GR-5
  • Guardrail Terminal Section - E2/E2 Mod Hardware Detail
  • Changed to GR-6
  • Guardrail Terminal Section - E2 Modified 30 mph Design
  • Changed to GR-7
  • Guardrail Terminal Section - E2 Modified 40 mph Design
  • Changed to GR-8
  • Guardrail Terminal Section - E2 Modified 45 mph Design
  • Changed to GR-9
  • Precast Concrete Barrier 42" F-Shape (Double Faced)
  • Changed to GR-15
  • Transition F-Shape Barrier
  • Changed to GR-16
  • Transition F-Shape Barrier and Guardrail (Wood)
  • Changed to GR-17
  • Transition F-Shape Barrier and Guardrail (Steel)
  • Changed to GR-18
  • Single Slope Barrier
  • Changed to GR-19
  • Transition Single Slope Concrete Barrier, Precast
  • Changed to GR-20
  • Transition Single Slope Concrete Barrier and Guardrail (Wood)
  • Changed to GR-21
  • Transition Single Slope Concrete Barrier and Guardrail (Steel)
  • Changed to GR-22

Traffic Detail Sheets

  • Word and Symbol Lane layout
  • Format: pdf | dgn (MSC)
  • Revised 09/20/23

 

Standard Plans | Highway Design | NH Department of Transportation