Safety Design and Guardrails

Revised: July 30, 2024

CLEAR ZONE AND SAFETY PLANS

CABLE BARRIER

CRASH CUSHIONS

GUARDRAIL DETAILS

GUARDRAIL CONNECTIONS

GUARDRAIL (SPECIAL CASES)

GUARDRAIL TERMINALS

GUARDRAIL ANCHORS

CONCRETE MEDIAN BARRIERS

GUARDRAIL MAINTENANCE

CLEAR ZONE AND SAFETY PLANS
DRAWINGRELATED IBREVISION DATEDESCRIPTION
 06/28/2019
CLEAR ZONE CRITERIA
IB 23-0403/01/2023SAFETY PLAN FOR BARRIER LENGTH OF NEED
S-PL-1AIB 23-0403/01/2023SAFETY PLAN FOR BARRIER LENGTH OF NEED (FOR RIGID OBJECTS)
S-PL-1BIB 23-0403/01/2023SAFETY PLAN FOR BARRIER LENGTH OF NEED ON CURVED ROADWAYS
IB 23-0403/01/2023
SAFETY PLAN MINIMUM INSTALLATION AT BRIDGE ENDS
IB 24-0301/09/2024
SAFETY PLAN FOR BRIDGE PIERS IN CLEAR ZONE
S-PL-4AIB 24-0301/09/2024SAFETY PLAN FOR BRIDGE PIERS IN CLEAR ZONE & OUT OF CLEAR ZONE
 06/28/2019
SAFETY PLAN FOR BRIDGE ENDS IN MEDIANS
 07/30/2024
SAFETY PLAN SAFETY HARDWARE PLACEMENT ON OUTSIDE EDGE
 06/28/2019
SAFETY PLAN SAFETY HARDWARE PLACEMENT IN MEDIAN
    

CABLE BARRIER
DRAWINGRELATED IBREVISION DATEDESCRIPTION
IB 24-0301/09/2024
CABLE BARRIER PLACEMENT
S-CB-2IB 23-1107/07/2023HIGH TENSION CABLE BARRIER
    

CRASH CUSHIONS
DRAWINGRELATED IBREVISION DATEDESCRIPTION
IB 24-03
01/09/2024
CRASH CUSHION
 06/28/2019
CRASH CUSHION (GATING) BARREL ARRAY
    

 GUARDRAIL DETAILS
DRAWINGRELATED IBREVISION DATEDESCRIPTION
 
06/15/2021
GUARDRAIL DETAILS
 06/28/2019
GUARDRAIL AND BLOCK-OUT DETAILS
S-GR31-1B
  GUARDRAIL FASTENING HARDWARE
S-GR31-1CIB 23-1107/07/2023GUARDRAIL GENERAL NOTES AND POST DETAILS
S-GR31-1DIB 23-0403/01/2023GUARDRAIL POST PLACEMENT IN ROCK
    

GUARDRAIL CONNECTIONS
DRAWINGRELATED IBREVISION DATEDESCRIPTION
S-GRC-4IB 23-1107/07/2023GUARDRAIL CONNECTION TO BRIDGE RAILING CONCRETE PARAPET
S-GRC-5
 02/28/2020GUARDRAIL CONNECTION TO BRIDGE ENDS (TRAILING ENDS)
S-GRC-6IB 23-1107/07/2023GUARDRAIL CONNECTION TO BRIDGE ENDS FOR LOW SPEED ROADWAYS
    

GUARDRAIL (SPECIAL CASES)
DRAWINGRELATED IBREVISION DATEDESCRIPTION
S-CPW-1
  CURVED PARAPET WALL ≤ 40 M.P.H.
 
06/15/2021
SPECIAL CASE LONG SPAN GUARDRAIL 1 POST, 2 OR 3 POSTS OMITTED
 
01/28/2022
SPECIAL CASE GUARDRAIL ATTACHMENT TO CONCRETE DECKS
 
06/28/2019
SPECIAL CASE GUARDRAIL FOOTING
 
05/04/2022
SPECIAL CASE GUARDRAIL HEIGHT TRANSITION DETAIL
S-GRS-5  SPECIAL CASE WEAK-POST GUARDRAIL ATTACHMENT TO CULVERT
S-GRS-5A 06/15/2021WEAK-POST GUARDRAIL ASSEMBLY DETAILS FOR TYPE 1 & 2
S-GRS-5B    WEAK-POST GUARDRAIL ASSEMBLY DETAILS FOR TYPE 3 & 4
S-GRS-6  SPECIAL CASE FLEXIBITLTY ON GUARDRAIL POST INSTALLATIONS
S-GRS-7IB 24-0301/09/2024SHORT – RADIUS GUARDRAIL SYSTEM (SRGS)
S-GRS-7A 07/30/2024SHORT – RADIUS GUARDRAIL SYSTEM (SRGS) ANCHOR DETAILS
S-GRS-7BIB 24-03 SHORT RADIUS-GR SYSTEM (SRGS) EYE-BOLT SPACING DETAILS

GUARDRAIL TERMINALS
DRAWINGRELATED IBREVISION DATEDESCRIPTION
 
10/29/2021
TYPE 12 GUARDRAIL TERMINAL BURIED-IN-BACKSLOPE
S-GRT-1A  LAYOUT OF FLARED GUARDRAIL (TL- 3)
S-GRT-1B  LAYOUT OF FLARED GUARDRAIL (TL- 2)
 
06/28/2019
TYPE 38 GUARDRAIL END TERMINAL
 
10/16/2020
EARTH PAD FOR TYPE 38 AND TYPE 21 TERMINAL
 
06/28/2019
EARTH PAD FOR TYPE 38 AND TYPE 21 TERMINALS (RETROFIT)
 
06/28/2019
TYPE 21 GUARDRAIL END TERMINAL
S-GRT-4IB 24-03 TYPE 21 GATING END TERMINAL
S-GRT-4AIB 24-03 TYPE 21 GATING END TERMINAL ANCHOR DETAILS
S-GRT-4BIB 24-03 GATING TERMINAL POST & RAIL DETAILS

GUARDRAIL ANCHORS
DRAWINGRELATED IBREVISION DATEDESCRIPTION
 
06/28/2019
TYPE 12 GUARDRAIL ANCHOR
 06/28/2019
GUARDRAIL ANCHOR FOR TYPE 12 TERMINAL (ALTERNATIVE)
 IB 24-0301/09/2024
TYPE 13 GUARDRAIL ANCHOR
IB 23-0403/01/2023
IN-LINE GUARDRAIL ANCHOR TO PRIVATE DRIVE
 06/28/2019
FLARED GUARDRAIL ANCHOR
    

CONCRETE MEDIAN BARRIERS
DRAWINGRELATED IBREVISION DATEDESCRIPTION
 
01/28/2022
32” SINGLE SLOPE CONCRETE BARRIER WALL
S-SSMB-1A 10/29/202136" SINGLE SLOPE CONCRETE BARRIER WALL
 10/29/2021
51” SINGLE SLOPE CONCRETE BARRIER WALL
 10/29/2021
51” HALF SIZE SINGLE SLOPE CONCRETE BARRIER WALL
 07/17/2020
FLARED SINGLE SLOPE CONCRETE MEDIAN BARRIER WALL (VERTICAL BACK)
 05/01/2020
SINGLE SLOPE MEDIAN BARRIER WALL CATCH BASIN DETAIL
 
06/28/2019
32" CONCRETE SINGLE SLOPE BARRIER WALL WITH SINGLE GUARDRAIL ATTACHMENT
S-SSMB-6A
  36” CONCRETE SINGLE SLOPE BARRIER WALL FOR ATTACHING GUARDRAIL
S-SSMB-6B    DUAL GUARDRAIL ATTACHMENT TO SINGLE SLOPE 36” BARRIER WALL
S-SSMB-6C    SINGLE GUARDRAIL ATTACHMENT TO SINGLE SLOPE 36” BARRIER WALL
S-SSMB-6D    51” CONCRETE SINGLE SLOPE BARRIER WALL FOR ATTACHING GUARDRAIL
S-SSMB-6E    DUAL GUARDRAIL ATTACHMENT TO SINGLE SLOPE 51” BARRIER WALL
S-SSMB-6F    SINGLE GUARDRAIL ATTACHMENT TO SINGLE SLOPE 51” BARRIER WALL
 05/01/2020
FOOTING DETAILS FOR OVERHEAD SIGN STRUCTURE 32” MEDIAN BARRIER WALL
 05/01/2020
FOOTING DETAILS FOR OVERHEAD SIGN STRUCTURE 51” MEDIAN BARRIER WALL
 10/29/2021
SINGLE SLOPE BARRIER WALL FOR GRADE SEPARATED MEDIAN
S-SSMB-10IB 24-0301/09/2024SPECIAL DETAIL FOR CONCRETE MEDIAN BARRIER WALL BARRIER WALL TRANSITION FROM 32” TO 51”
    

GUARDRAIL MAINTENANCE
DRAWINGRELATED IBREVISION DATEDESCRIPTION
 06/15/2021W-BEAM & THRIE BEAM BARRIER RAIL AND RUB RAIL DETAILS
S-GR28-2M
 06/28/2019
GUARDRAIL HARDWARE DETAILS
S-GR28-3M
 01/28/2022
GUARDRAIL HEIGHT ADJUSTMENT
 06/28/2019
GUARDRAIL TERMINAL ANCHOR TYPE 13
S-GR28-5M
 06/28/2019
MEDIAN DIVIDER GUARDRAIL
S-GR28-6M 10/29/2021
GUARDRAIL ATTACHMENT TO CONCRETE DECKS
S-GR28-7M
 06/28/2019
GUARDRAIL ATTACHMENT TO BRIDGE END DETAILS
S-GRC-1M  GUARDRAIL CONNECTION TO BRIDGE ENDS OR BARRIER WALL
S-GRC-2M  GUARDRAIL CONNECTION TO BRIDGE END FOR LOCAL ROADS (ADT < 2000)
S-GRC-3M  MEDIAN DIVIDER GUARDRAIL TRANSITION TO CONCRETE MEDIAN BARRIER
S-PL-2M*IB 23-04 SAFETY PLAN AT SIDEROADS OR PRIVATE DRIVES
S-SSMB-6M  GUARDRAIL ATTACHMENT TO EXISTING SINGLE SLOPE CONCRETE BARRIER WALL
    

* NOTE: Standard drawing S-PL-2 has been renamed to S-PL-2M and has been placed under the Guardrail Maintenance Series.

If you find any mistakes, missing information or have a question, contact:
TDOT Engineering Production Support
1200 James K. Polk Building
Nashville, TN 37243-1402
TDOT.EngineeringProductionSupport@tn.gov

This Page Last Updated: August 1, 2024 at 8:37 AM