Safety Design and Guardrails
Revised: April 1, 2024CLEAR ZONE AND SAFETY PLANS
CABLE BARRIER
CRASH CUSHIONS
GUARDRAIL DETAILS
GUARDRAIL (SPECIAL CASES)
GUARDRAIL TERMINALS
GUARDRAIL ANCHORS
CONCRETE MEDIAN BARRIERS
| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
| 06/28/2019 | CLEAR ZONE CRITERIA
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| IB 23-04 | 03/01/2023 | SAFETY PLAN FOR BARRIER LENGTH OF NEED | |
| S-PL-1A | IB 23-04 | 03/01/2023 | SAFETY PLAN FOR BARRIER LENGTH OF NEED (FOR RIGID OBJECTS) |
| S-PL-1B | IB 23-04 | 03/01/2023 | SAFETY PLAN FOR BARRIER LENGTH OF NEED ON CURVED ROADWAYS |
| IB 23-04 | 03/01/2023 | SAFETY PLAN MINIMUM INSTALLATION AT BRIDGE ENDS
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| IB 24-03 | 01/09/2024 | SAFETY PLAN FOR BRIDGE PIERS IN CLEAR ZONE
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| S-PL-4A | IB 24-03 | 01/09/2024 | SAFETY PLAN FOR BRIDGE PIERS IN CLEAR ZONE & OUT OF CLEAR ZONE |
| 06/28/2019 | SAFETY PLAN FOR BRIDGE ENDS IN MEDIANS
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| 06/15/2021 | SAFETY PLAN SAFETY HARDWARE PLACEMENT ON OUTSIDE EDGE
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| 06/28/2019 | SAFETY PLAN SAFETY HARDWARE PLACEMENT IN MEDIAN
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| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
| IB 24-03 | 01/09/2024 | CABLE BARRIER PLACEMENT
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| S-CB-2 | IB 23-11 | 07/07/2023 | HIGH TENSION CABLE BARRIER |
| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
| IB 24-03 | 01/09/2024
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CRASH CUSHION
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| 06/28/2019 | CRASH CUSHION (GATING) BARREL ARRAY
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| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
06/15/2021
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GUARDRAIL DETAILS
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| 06/28/2019 | GUARDRAIL AND BLOCK-OUT DETAILS
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| S-GR31-1B |
GUARDRAIL FASTENING HARDWARE | ||
| S-GR31-1C | IB 23-11 | 07/07/2023 | GUARDRAIL GENERAL NOTES AND POST DETAILS |
| S-GR31-1D | IB 23-04 | 03/01/2023 | GUARDRAIL POST PLACEMENT IN ROCK |
| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
| S-GRC-4 | IB 23-11 | 07/07/2023 | GUARDRAIL CONNECTION TO BRIDGE RAILING CONCRETE PARAPET |
| S-GRC-5 |
02/28/2020 | GUARDRAIL CONNECTION TO BRIDGE ENDS (TRAILING ENDS) | |
| S-GRC-6 | IB 23-11 | 07/07/2023 | GUARDRAIL CONNECTION TO BRIDGE ENDS FOR LOW SPEED ROADWAYS |
| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
| S-CPW-1 |
CURVED PARAPET WALL ≤ 40 M.P.H. | ||
06/15/2021
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SPECIAL CASE LONG SPAN GUARDRAIL 1 POST, 2 OR 3 POSTS OMITTED
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01/28/2022
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SPECIAL CASE GUARDRAIL ATTACHMENT TO CONCRETE DECKS
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06/28/2019
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SPECIAL CASE GUARDRAIL FOOTING
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05/04/2022
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SPECIAL CASE GUARDRAIL HEIGHT TRANSITION DETAIL
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| S-GRS-5 | SPECIAL CASE WEAK-POST GUARDRAIL ATTACHMENT TO CULVERT | ||
| S-GRS-5A | 06/15/2021 | WEAK-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-7 | IB 24-03 | 01/09/2024 | SHORT – RADIUS GUARDRAIL SYSTEM (SRGS) |
| S-GRS-7A | IB 24-03 | 01/09/2024 | SHORT – RADIUS GUARDRAIL SYSTEM (SRGS) DETAILS |
| S-GRS-7B | IB 24-03 | SHORT RADIUS-GR SYSTEM (SRGS) EYE-BOLT SPACING DETAILS | |
| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
10/29/2021
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TYPE 12 GUARDRAIL TERMINAL BURIED-IN-BACKSLOPE
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| S-GRT-1A | LAYOUT OF FLARED GUARDRAIL (TL- 3) | ||
| S-GRT-1B | LAYOUT OF FLARED GUARDRAIL (TL- 2) | ||
06/28/2019
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TYPE 38 GUARDRAIL END TERMINAL
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10/16/2020
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EARTH PAD FOR TYPE 38 AND TYPE 21 TERMINAL
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06/28/2019
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EARTH PAD FOR TYPE 38 AND TYPE 21 TERMINALS (RETROFIT)
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06/28/2019
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TYPE 21 GUARDRAIL END TERMINAL
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| S-GRT-4 | IB 24-03 | TYPE 21 GATING END TERMINAL | |
| S-GRT-4A | IB 24-03 | TYPE 21 GATING END TERMINAL ANCHOR DETAILS | |
| S-GRT-4B | IB 24-03 | GATING TERMINAL POST & RAIL DETAILS | |
| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
06/28/2019
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TYPE 12 GUARDRAIL ANCHOR
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| 06/28/2019 | GUARDRAIL ANCHOR FOR TYPE 12 TERMINAL (ALTERNATIVE)
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| IB 24-03 | 01/09/2024 | TYPE 13 GUARDRAIL ANCHOR
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| IB 23-04 | 03/01/2023 | IN-LINE GUARDRAIL ANCHOR TO PRIVATE DRIVE
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| 06/28/2019 | FLARED GUARDRAIL ANCHOR
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| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
01/28/2022
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32” SINGLE SLOPE CONCRETE BARRIER WALL
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| S-SSMB-1A | 10/29/2021 | 36" SINGLE SLOPE CONCRETE BARRIER WALL |
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| 10/29/2021 | 51” SINGLE SLOPE CONCRETE BARRIER WALL
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| 10/29/2021 | 51” HALF SIZE SINGLE SLOPE CONCRETE BARRIER WALL
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| 07/17/2020 | FLARED SINGLE SLOPE CONCRETE MEDIAN BARRIER WALL (VERTICAL BACK)
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| 05/01/2020 | SINGLE SLOPE MEDIAN BARRIER WALL CATCH BASIN DETAIL
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06/28/2019
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32" CONCRETE SINGLE SLOPE BARRIER WALL WITH SINGLE GUARDRAIL ATTACHMENT
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| 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
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| 05/01/2020 | FOOTING DETAILS FOR OVERHEAD SIGN STRUCTURE 51” MEDIAN BARRIER WALL
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| 10/29/2021 | SINGLE SLOPE BARRIER WALL FOR GRADE SEPARATED MEDIAN
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| S-SSMB-10 | IB 24-03 | 01/09/2024 | SPECIAL DETAIL FOR CONCRETE MEDIAN BARRIER WALL BARRIER WALL TRANSITION FROM 32” TO 51” |
| DRAWING | RELATED IB | REVISION DATE | DESCRIPTION |
| 06/15/2021 | W-BEAM & THRIE BEAM BARRIER RAIL AND RUB RAIL DETAILS | ||
| S-GR28-2M |
06/28/2019 | GUARDRAIL HARDWARE DETAILS
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| S-GR28-3M |
01/28/2022 | GUARDRAIL HEIGHT ADJUSTMENT
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| 06/28/2019 | GUARDRAIL TERMINAL ANCHOR TYPE 13
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| S-GR28-5M |
06/28/2019 | MEDIAN DIVIDER GUARDRAIL
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| S-GR28-6M | 10/29/2021 | GUARDRAIL ATTACHMENT TO CONCRETE DECKS
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| S-GR28-7M |
06/28/2019 | GUARDRAIL ATTACHMENT TO BRIDGE END DETAILS
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| 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 SIDE RSAFETY PLAN AT SIDE ROADS 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 CADD Support
1200 James K. Polk Building
Nashville, TN 37243-1402
TDOT.CADDSupport@tn.gov
This Page Last Updated: April 18, 2024 at 10:09 AM