Important Notice
In the effort to update the Standard Construction Details and Standard Specifications per the 2022 review, all detail sheets have been reviewed and sheet changes have been noted with new title block and signatures. Major efforts of this update include removal of the metric values so that the U.S. customary units will be the only unit of measure, addition of 2016 MASH compliance as accepted by the Department, consistency with the 2021 DelDOT Standard Specifications, consistency with Department and regulatory publications, and edits of the Details were made to meet the current methods of construction.
Standards
- DelDOT Standard Details -Revised: 7/25/2023
- DelDOT Standard Details Revision Sheets - Revised: 7/25/2023
- Index Sheets
- Memo to Current Holders - List of Changes for 2022
Note: Click icon for MicroStation DGN file format
- B-L (2022) - Barrier Legend
- B-1 - Guardrail Applications (Types 1-31, 2-31, and 3-31)
- B-1 (2020) - 1 - Plan Views
- B-1 (2020) - 2 - Elevation Views and Splice Details
- B-1 (2021) - 3 - Section Views
- B-1 (2022) - 4 - Type 1-31, Guardrail with Omitted Post
- B-1 (2020) - 5 - Type 1-31, Guardrail Steep Slope
- B-1 (2020) - 1 - Plan Views
- B-2 - Grading for Guardrail End Treatments (Types 1, 2, and 3)
- B-2 (2022) - 1 - Grading For Guardrail End Treatment Attenuator, Type 1
- B-2 (2022) - 2 - Grading For Guardrail End Treatment Attenuator, Type 2
- B-2 (2022) - 3 - Grading For Guardrail End Treatment Attenuator, Type 3
- B-2 (2022) - 1 - Grading For Guardrail End Treatment Attenuator, Type 1
- B-3 - Guardrail Over Culverts (Types 2-31, and 3-31)
- B-3 (2022) - 1 - Guardrail Over Culverts, Type 2-31
- B-3 (2022) - 2 - Guardrail Over Culverts, Type 3-31
- B-3 (2022) - 1 - Guardrail Over Culverts, Type 2-31
- B-4 (2022) - 1 - End Anchorage, Type 1-31
- B-5 - RESERVED
- B-6 - RESERVED
- B-7 (2021) - W-Beam, Type 1-27 to Type 1-31 Transition Section
- B-8 - Guardrail to Barrier Connection - Approach and Exit Type 1-31
- B-8 (2020) - 1 - Approach Type 1-31
- Revised: 7/25/2023
- B-8 (2020) - 2 - Type 1 Hardware
- B-8 (2020) - 3 - Bent Plate Rub Rail
- B-8 (2020) - 4 - Exit Type 1-31
- B-8 (2020) - 1 - Approach Type 1-31
- B-9 - RESERVED
- B-10 - Guardrail to Barrier Connection - Type 3-31
- B-10 (2022) - 1 - Approach, Type 3-31
- edited: 3/7/2023
- B-10 (2021) - 2 - Post
- B-10 (2021) - 3 - Post and Offset Block
- B-10 (2021) - 4 - Terminal End Shoe and Connection
- B-10 (2022) - 1 - Approach, Type 3-31
- B-11 - Thrie-Beam Approach Guardrail Transition (AGT) To Connection Buttress
- B-11 (2021) - 1 - Thrie-Beam AGT to Connection Buttress - Elevation and Plan Views
- B-11 (2021) - 2 - Thrie-Beam AGT to Connection Buttress - Plan, Elevation, and Reinforcement Views
- B-11 (2021) - 3 - 36 F-Shape Transition
- B-11 (2021) - 4 - 36 F-Shape Transition Reinforcement
- B-11 (2021) - 5 - 42 F-Shape Transition
- B-11 (2021) - 6 - 42 F-Shape Transition Reinforcement
- B-11 (2021) - 7 - 42 Single Slope Transition
- B-11 (2021) - 8 - 42 Single Slope Transition Reinforcement
- B-11 (2021) - 1 - Thrie-Beam AGT to Connection Buttress - Elevation and Plan Views
- B-12 - RESERVED
- B-13 - Hardware
- B-13 (2021) - 1 - W-Beam Section and Elevation Views
- B-13 (2021) - 2 - W-Beam Steel Post and Offset Block
- B-13 (2021) - 3 - W-Beam Terminal Connector
- B-13 (2021) - 4 - Thrie Beam and Thrie Beam Expansion Section and Elevation
- B-13 (2021) - 5 - Thrie Beam Steel Post and Offset Block
- B-13 (2021) - 6 - Asymmetric and Symmetric W-Beam to Thrie Beam Transition Section
- B-13 (2021) - 7 - Wood Offset Blocks, Soil Plate, Steel Tube and Wood Breakaway Posts
- B-13 (2022) - 8 - End Anchorage Hardware
- B-13 (2021) - 9 - Reflector and W-Beam Bearing Plate
- B-13 (2021) - 10 - Guardrail Mounted Rail
- B-13 (2021) - 11 - Downstream Anchorage System - Ground Strut & Anchor Bracket
- B-13 (2021) - 12 - Guardrail to Barrier Connection - Thrie-Beam Terminal Connector
- B-13 (2021) - 1 - W-Beam Section and Elevation Views
- B-14 - RESERVED
- B-15 - Guardrail Applications (Types 1-27, 2-27, and 3-27)
- B-15 (2021) - 1 - Plan Views
- B-15 (2021) - 2 - Elevation Views and Splice Details
- B-15 (2021) - 3 - Section Views
- B-15 (2021) - 1 - Plan Views
- B-16 - RESERVED
- B-17 (2021) - Guardrail End Treatment, Type 4-27
- B-18 (2021) - Curved Guardrail Section, Type 1-27
- B-19 - RESERVED
- B-20 - Burried In Back Slope End Terminal, Type 1-31
- B-20 (2021) - 1 - Perspective and Elevation Views
- B-20 (2021) - 2 - Section Views
- B-20 (2021) - 3 - Hardware
- B-20 (2021) - 4 - Posts
- B-20 (2021) - 1 - Perspective and Elevation Views
- B-21 - RESERVED
- B-22 - RESERVED
- B-23 - RESERVED
- B-24 - RESERVED
- B-25 - Concrete Roadside Barrier, 36"
- B-25 (2021) - 1 - Typical Sections Type 1, Type 2, and Type 3
- B-25 (2021) - 2 - Elevation and Reinforcement
- B-25 (2021) - 1 - Typical Sections Type 1, Type 2, and Type 3
- B-26 - Concrete Roadside Barrier, 42"
- B-26 (2021) - 1 - Typical Sections Type 1, Type 2, and Type 3
- B-26 (2021) - 2 - Elevation and Reinforcement
- B-26 (2021) - 1 - Typical Sections Type 1, Type 2, and Type 3
- B-27 (2021) - Elevation and Reinforcement 32 F - Shape
- B-28 (2021) - Elevation and Reinforcement 36 F - Shape
- B-29 (2021) - Elevation and Reinforcement 42 F - Shape
- B-30 (2021) - Elevation and Reinforcement 42 Single Slope
Note: Click icon for MicroStation DGN file format
- C-1 - PCC Curb
- C-1 (2022) - 1 -
PCC
Curb
- - Revised: 7/25/2023
- C-1 (2022) - 2 -
Integral PCC Curb &
Gutter
- Revised: 7/25/2023
- C-1 (2022) - 3 -
Integral PCC Curb & Gutter (For Use At
Pedestrian Connections
Only)
- Revised: 7/25/2023
- C-1 (2021) - 4 - PCC
Roundabout and Guardrail Median
Curb
- C-1 (2022) - 1 -
PCC
Curb
- C-2 - Pedestrian Connection
- C-2 (2021) - 1 -
General
Notes
- C-2 (2021) - 2 -
Type
1
- C-2 (2021) - 3 -
Type
1
- C-2 (2021) - 4 -
Type
2
- C-2 (2021) - 5 -
Type
3
- C-2 (2022) - 6 -
Type
4
- C-2 (2022) - 7 -
Type 5 and DWS Placement
- C-2 (2021) - 1 -
General
Notes
- C-3 (2022) - Entrances
- C-4 (2022) - Curb Opening
- C-5 (2022) - Curb Sidewalk Opening
- C-6 (2021) - Curb
Retaining
Wall
Note: Click icon for MicroStation DGN file format
- D-1 - 6:1 Safety End Structure
- D-1 (2018) - 1 - Detail Views
- D-1 (2018) - 2 - Schedules
- D-1 (2018) - 1 - Detail Views
- D-2 - 10:1 Safety End Structure
- D-2 (2018) - 1 - Detail Views
- D-2 (2018) - 2 - Schedules
- D-2 (2018) - 1 - Detail Views
- D-3 - Safety Grates
- D-3 (2020) - 1 -
Safety End Structure Grate and Assembly
- D-3 (2022) - 2 - Personnel Safety Grate For Pipe Inlet
- D-3 (2020) - 1 -
Safety End Structure Grate and Assembly
- D-R (2021) - Drainage Inlet Reference Sheet
- D-4 (2021) - Inlet Box
- D-5 - Drainage Inlet Details
- D-5 (2021) - 1 - Drainage
Inlet
Assembly
- D-5 (2021) - 2 - Drainage
Inlet Frame and
Grates
- D-5 (2022) - 3 -
Drainage
Inlet top Units
- Revised: 7/25/2023
- D-5 (2021) - 4 - Drainage
Inlet Cover
Slab
- D-5 (2021) - 5 - Double
Inlet Cover
Slab
- D-5 (2021) - 6 - 34"
X 24" Drainage
Inlet
- D-5 (2021) - 7 - 34"
X 18" Drainage
Inlet
- D-5 (2022) - 8 -
Drainage Inlet top Unit, Type
S
- D-5 (2021) - 9 - Doghouse
Inlet
Box
- D-5 (2021) - 1 - Drainage
Inlet
Assembly
- D-6 - Manhole Details
- D-6 (2009) - 1 - Box Manhole Assembly
- D-6 (2021) - 2 - Round Manhole Assembly
- D-6 (2021) - 3 - Manhole Grade Ring, top Unit, Frame and Cover
- D-6 (2021) - 4 - Box Manhole Cover Slab
- D-6 (2021) - 5 - Round Manhole Cover Slab
<
- D-6 (2009) - 1 - Box Manhole Assembly
- D-7 - RESERVED
- D-8 (2021) - Pipe Bedding and Pipe Flared End Support
- D-9 (2021) - Perforated Pipe Underdrain
- D-10 (2021) - Pipe Plugging
- D-11 - RESERVED
Note: Click icon for MicroStation DGN file format
- E-1 (2021) - Concrete Washout
- E-2 Silt Fence
- E-2 (2021) - 1 - Silt Fence
- E-2 (2021) - 1 - Super Silt Fence
- E-2 (2021) - 1 - Silt Fence
- E-3 (2021) - Sediment Trap
- E-4 (2021) - Inlet Sediment Control, Drainage Inlet
- E-5 (2021) - Inlet Sediment Control, Culvert Inlet
- E-6 (2021) - Portable Sediment Tank
- E-7 (2014) - Sump Pit
- E-8 (2021) - Skimmer Dewatering Device
- E-9 Check Dam
- E-9 (2021) - 1 - Stone Check Dam
- E-9 (2021) - 2 - Compost Filter Log Check Dam
- E-9 (2021) - 1 - Stone Check Dam
- E-10 (2021) - Temporary Slope Drain
- E-11 (2014) - Incremental Stabilization
- E-12 - RESERVED
- E-13 - RESERVED
- E-14 (2014) - Stabilized Construction Entrance
- E-15 (2014) - Sandbag Dike
- E-16 (2014) - Sandbag Diversion
- E-17 (2021) - Geotextile-lined Channel Diversion
- E-18 (2014) - Turbidity Curtain
- E-19 (2021) - Stilling Well
- E-20 (2014) - RipRap Energy Dissipator
- E-21 (2021) - Stone Outlet
Note: Click icon for MicroStation DGN file format
- L-1 - Planting Details
- L-1 (2017) - 1 - Roadside Shrub Planting Detail
- L-1 (2017) - 2 - Tree Planting Detail
- L-1 (2017) - 3 - Perennial/Ground Cover Planting Detail
- L-1 (2017) - 1 - Roadside Shrub Planting Detail
Note: Click icon for MicroStation DGN file format
- M-1 (2021) - Right-of-Way Fence
- M-2 (2021) - Right-of-Way Monumentation
- M-3 (2022) - Shared-Use Path & Sidewalk Details
- M-4 (2011) - Bike Rack Layout Details
- M-5 (2021) - Wood Rail Fence
- M-6 (2021) - Patterned Hot-Mix or Concrete & Brick Paver Details
- M-7 (2022) - Chain Link Fence Details
- M-8 (2014) - PCC Parking Bumper
- M-9 - Bus Stop Pad Details
- M-9 (2022) - 1 - Bus Stop Details, Types 1, 2, & 3
- M-9 (2021) - 2 - Bus Stop Pad with Shelter Details, Types 1 & 2
- M-9 (2022) - 1 - Bus Stop Details, Types 1, 2, & 3
- M-10 - Bridge Safety Fence
- M-10 (2014) - 1 - Bridge Safety Fence Type 1
- M-10 (2014) - 2 - Bridge Safety Fence, Type 2
- M-10 (2017) - 3 - Hardware
- M-10 (2014) - 1 - Bridge Safety Fence Type 1
- M-11 - Steel plate
- M-11 (2021) - Steel Plate Roadway
- M-12 (2021) - Steel Plate Bridge Deck
- M-13 (2021) - Steel Plate Bridge Deck
- M-11 (2021) - Steel Plate Roadway
- M-12 (2021) - Driveway Transverse Slope Grading
- M-13 (2021) - Temporary Pedestrian Pathway
- M-14 (2021) - Pinned to Unpinned Temporary PCC Safety Barrier Connection
Note: Click icon for MicroStation DGN file format
- P-1 - PCC Pavement
- P-1 (2022) - 1 - Slab Plan (With Dowel and Tie Locations)
- P-1 (2021) - 2 - Joint and Sealant
- P-1 (2021) - 3 - W Bolt, Hook Bolt, Dowel and Tie Bar
- P-1 (2021) - 4 - Dowel Support Basket
- P-1 (2021) - 5 - Dowel and Tie Bar Placement tolerance
- P-1 (2022) - 1 - Slab Plan (With Dowel and Tie Locations)
- P-2 - PCC Pavement Patching
- P-2 (2021) - 1 - Full Depth Patch Plan Views
- P-2 (2021) - 2 - Full Depth Patch, Section Views
- P-2 (2021) - 3 - Full Depth Patch, Sealant, Grout Retention Disk and Dowel Bars
- P-2 (2021) - 4 - Full Depth Patch, Dowel Bar Placement Tolerance
- P-2 (2021) - 5 - Partial Depth Patch, Plan and Section Views
- P-2 (2021) - 1 - Full Depth Patch Plan Views
- P-3 (2022) - Butt Joints
- P-4 (2021) - Permanent Cross-Road Patch Over Pipe Trench
- P-5 - Rumble Strips
- P-5 (2018) - 1 Rumble Strips
- P-5 (2018) - 2 Rumble Strips
- P-5 (2018) - 1 Rumble Strips
- P-6 (2021) - Pavement Safety Edge
Note: Click icon for MicroStation DGN file format
- T-1 - Conduit Junction Wells
- T-1 (2021) - 1 - Type 1
- T-1 (2021) - 1 - Type 1
- T-1 (2021) - 2 - Type 4
- T-1 (2021) - 3 - Type 5
- T-1 (2021) - 4 - Type 7
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
- T-4 (2020) - 1 - Types M, K, & F
- T-4 (2020) - 2 - Types P & R
- T-5 (2022) - 1 - Round Base & Round Base With Square Foundation Header
- T-5 (2022) - 2 - Typical Section and Installation (Bases 1, 2, 2A, 2B, 3, 3A, and 3B)
- Revised: 7/25/2023
- T-5 (2022) - 3 - Typical Section (Base 6A) and Pole Base Data Chart
- Revised: 7/25/2023
- T-5 (2022) - 4 - Typical Section (Base 6B) and Pole Base Data Chart
- Revised: 7/25/2023
- T-5 (2022) - 5 - Typical Section (Base 4A and 4B) and Anchor and Breakaway Coupling
- T-8 (2021) - 1 - Junction Well Behind Curb Or Curb and Gutter With Grass Strip
- T-8 (2021) - 2 - Junction Well Behind Curb Or Curb and Gutter With Or Without Sidewalk
- T-8 (2021) - 3 - Junction Well In Concrete Island
- T-8 (2021) - 4 - Junction Well Without Curb and Gutter With Sidewalk and Grass Strips and Directly Adjacent to Paved Surface
- T-9 (2021) - 1 - Loop Detector Sawcut Typical, Hot Mix Surface Section, and Splice Kit
- T-9 (2021) - 2 - Typical Intersection Layout
- T-9 (2021) - 3 - Pedestrian Crossing Typical Layout
- T-9 (2022) - 4 - Wiring Color Codes
- T-11 (2021) - 1 - Intermediate Messenger Wire Attachment On Wood Poles
- T-11 (2021) - 2 - Angular Intermediate Messenger Wire Attachment
- T-12 (2021) - 1 - Attachment Between Poles
- T-12 (2021) - 2 - Dead End Messenger Wire Attachment
- T-12 (2022) - 3 - Span Wire Assembly
- T-14 (2021) - 1 - Upright Mount
- T-14 (2021) - 2 - Inverted Mount
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
- T-17 (2022) - 1 - 100 Amp (3+ Devices)
- Revised: 7/25/2023
- T-17 (2022) - 2 - 100 Amp (Condensed)
- Revised: 7/25/2023
- T-17 (2022) - 3 - 100 Amp (Up to 2 Devices)
- Revised: 7/25/2023
- T-17 (2022) - 4 - 200 Amp - Standard Lighting Component Installations
- T-17 (2022) - 5 - Lighting Component Installations (12 Or Less Fixtures)
- Revised: 7/25/2023
- T-17 (2022) - 6 - Electrical service pedestal – signal & ITS component installations sign assemblies with flashing beacons – 100 AMP
- Revised: 7/25/2023
- T-17 (2022) - 7 - – Electrical service pedestal – signal & ITS component installations sign assemblies with flashing beacons – 100 AMP (condensed)
- T-18 (2022) - 1 - Pushbutton Assembly Location On Pole
- T-18 (2022) - 2 - Sign Attachment
- T-18 (2022) - 3 - Pedestrian Pushbutton location – AC-powered RRFB signal pole installation
- Revised: 7/25/2023
- T-19 (2022) - 1 - Barrier Mounted Sign
- Revised: 7/25/2023
- T-19 (2022) - 2 - Barrier Mounted Sign
- Revised: 7/25/2023
- T-20 (2022) - 1 - Breakaway Steel Sign Support Charts
- T-20 (2022) - 2 - Breakaway Steel Sign Support Charts
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
- T-23 (2022) - 1 - Breakaway Steel Sign Support Foundations
- T-23 (2022) - 2 - Breakaway Steel Sign Support Foundations
- Revised: 7/25/2023
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
![This opens a MicroStation DGN file](/images/microstation/microstation.jpg)
- T-27 (2022) - 1 - Extruded Aluminum Detail
- T-27 (2022) - 2 - Extruded Aluminum Detail