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Roadway Design Standards

Revised: March 8, 2019
STANDARD ABBREVIATIONS AND LEGENDS
DRAWING REVISION DATE DESCRIPTION
RD-A-1
12/18/1999
STANDARD ABBREVIATIONS
RD-L-1
10/26/1994
STANDARD LEGEND
RD-L-2
09/05/2001
STANDARD LEGEND FOR UTILITY INSTALLATIONS
RD-L-3
03/16/2017
STANDARD LEGEND FOR SIGNALIZATION AND LIGHTING
RD-L-4
07/16/2018
STANDARD LEGEND FOR SIGNALIZATION AND LIGHTING
RD-L-5
05/01/2008
STANDARD LEGEND FOR EROSION PREVENTION AND SEDIMENT CONTROL
RD-L-6
03/30/2010
STANDARD LEGEND FOR EROSION PREVENTION AND SEDIMENT CONTROL
RD-L-7
05/24/2012
STANDARD LEGEND FOR EROSION PREVENTION AND SEDIMENT CONTROL
RD-L-8 09/15/2017
STANDARD LEGEND FOR NATURAL STREAM DESIGN
RD-TP-1
09/26/2016
STANDARD ROADWAY DRAWINGS TITLE SHEET
     

TYPICAL SECTIONS AND DESIGN CRITERIA
DRAWING REVISION DATE DESCRIPTION
RD01-TS-1
02/05/2016
DESIGN STANDARDS FOR LOCAL ROADS AND STREETS
RD01-TS-1A
02/05/2016
DESIGN STANDARDS FOR LOW-VOLUME LOCAL ROADS (ADT<=400)
RD01-TS-2
03/16/2017
DESIGN STANDARDS FOR COLLECTOR ROADS AND STREETS
RD01-TS-2A
10/15/2002
DESIGN STANDARDS 4 AND 6 LANE COLLECTOR HIGHWAYS WITH DEPRESSED MEDIANS
RD01-TS-2B
10/15/2002
DESIGN STANDARDS 4 AND 6 LANE COLLECTOR HIGHWAYS WITH FLUSH MEDIANS
RD01-TS-3
10/15/2002
DESIGN STANDARD FOR 2-LANE ARTERIAL HIGHWAYS
RD01-TS-3A
10/15/2002
DESIGN STANDARDS 4 AND 6 LANE ARTERIAL HIGHWAYS WITH DEPRESSED MEDIANS
RD01-TS-3B
10/15/2002
DESIGN STANDARDS 4 AND 6 LANE ARTERIALS WITH INDEPENDENT ROADWAYS
RD01-TS-3C
10/15/2002
DESIGN STANDARDS 4 AND 6 LANE ARTERIAL HIGHWAYS WITH FLUSH MEDIANS
RD01-TS-4
07/23/2013
DESIGN STANDARDS 1 AND 2 LANE RAMPS
RD01-TS-5
10/15/2002
DESIGN STANDARDS FREEWAYS WITH DEPRESSED MEDIANS
RD01-TS-5A
10/15/2002
DESIGN STANDARDS FREEWAYS WITH INDEPENDENT ROADWAYS
RD01-TS-5B
10/15/2002
DESIGN STANDARDS FREEWAYS WITH MEDIAN BARRIER
RD01-TS-5W  
TYPICAL DETAIL FOR INSIDE LANE WIDENING OF FREEWAYS
RD01-TS-6
01/07/2019
TYPICAL CURB AND GUTTER SECTIONS WITH SHOULDER
RD01-TS-6A
01/07/2019
TYPICAL CURB AND GUTTER SECTIONS WITHOUT SHOULDER
RD01-TS-6B  
TYPICAL CURB AND GUTTER FOR HIGH SPEED SUBURBAN ROADWAYS
RD01-TS-7
10/15/2002
DESIGN STANDARDS 2-LANE HIGHWAY WITH CONTINUOUS 2-WAY LEFT-TURN LANE
RD01-TS-7A
01/07/2019
DESIGN STANDARDS 2-LANE CURB AND GUTTER WITH CONTINUOUS 2-WAY LEFT-TURN LANE
RD01-TS-9
01/07/2019
DESIGN STANDARDS FOR SINGLE LANE URBAN AND RURAL ROUNDABOUTS
RD01-TS-10
01/07/2019
DESIGN STANDARDS FOR MULTI-LANE URBAN AND RURAL ROUNDABOUTS
RD01-SE-2
10/15/2002
URBAN SUPERELEVATION DETAILS
RD01-SE-3
10/15/2002
RURAL SUPERELEVATION DETAILS
     

RD11 TYPICAL SECTIONS AND DESIGN CRITERIA
DRAWING REVISION DATE DESCRIPTION
RD11-TS-1
  DESIGN STANDARDS FOR LOW-VOLUME ROADS
RD11-TS-1A   DESIGN STANDARDS FOR LOCAL ROADS AND STREETS
RD11-TS-2   DESIGN STANDARDS FOR COLLECTORS, 2-LANE ROADS AND STREETS
RD11-TS-2A   DESIGN STANDARDS FOR COLLECTOR HIGHWAYS WITH DEPRESSED MEDIAN (4 AND 6 LANE)
RD11-TS-2B   DESIGN STANDARDS FOR COLLECTOR HIGHWAYS WITH FLUSH MEDIAN (4 AND 6 LANE)
RD11-TS-3   DESIGN STANDARD FOR ARTERIAL HIGHWAYS (2-LANE)
RD11-TS-3A   DESIGN STANDARDS FOR ARTERIAL HIGHWAYS WITH DEPRESSED MEDIAN (4 AND 6 LANE)
RD11-TS-3B   DESIGN STANDARDS FOR ARTERIAL HIGHWAYS WITH FLUSH MEDIAN (4 AND 6 LANE)
RD11-TS-3C   DESIGN STANDARDS FOR ARTERIALS WITH INDEPENDENT ROADWAYS (4 AND 6 LANE)
RD11-TS-4   DESIGN STANDARDS FOR ARTERIAL AND FREEWAY RAMPS (1, 2 AND 3 LANE)
RD11-TS-5   DESIGN STANDARDS FOR FREEWAYS WITH DEPRESSED MEDIAN (4 AND 6 LANE)
RD11-TS-5A   DESIGN STANDARDS FOR FREEWAYS WITH INDEPENDENT ROADWAYS (4 AND 6 LANE)
RD11-TS-5B   DESIGN STANDARDS FOR FREEWAYS WITH MEDIAN BARRIER (4 AND 6 LANE)
RD11-TS-5W   TYPICAL DETAIL FOR INSIDE LANE WIDENING OF FREEWAYS
RD11-TS-6   TYPICAL CURB & GUTTER SECTIONS WITH SHOULDERS AND WITH GRASS STRIPS
RD11-TS-6A   TYPICAL CURB & GUTTER SECTIONS WITHOUT SHOULDERS AND WITH GRASS STRIPS
RD11-TS-6B   TYPICAL CURB AND GUTTER SECTIONS WITH SHOULDERS AND WITHOUT GRASS STRIPS
RD11-TS-6C   TYPICAL CURB AND GUTTER SECTIONS WITHOUT SHOULDERS AND WITHOUT GRASS STRIPS
RD11-TS-7   DESIGN STANDARDS 2-LANE CURB & GUTTER WITH CONTINUOUS 2-WAY LEFT-TURN LANE WITHOUT GRASS STRIPS
RD11-TS-7A   DESIGN STANDARDS 2-LANE CURB & GUTTER WITH CONTINUOUS 2-WAY LEFT-TURN LANE WITH GRASS STRIPS
RD11-TS-7B   DESIGN STANDARDS 2-LANE HIGHWAYS WITH CONTINUOUS 2-WAY LEFT-TURN LANE
RD11-TS-9   DESIGN STANDARDS FOR SINGLE LANE URBAN AND RURAL ROUNDABOUTS
RD11-TS-10   DESIGN STANDARDS FOR MULTl-LANE URBAN AND RURAL ROUNDABOUTS
RD11-SE-1   TRANSITION DETAILS
RD11-SE-2   SUPERELEVATION TRANSITION DETAILS FOR UNDIVIDED ROADWAY
RD11-SE-2A   SUPERELEVATION TRANSITION SECTIONS FOR UNDIVIDED ROADWAY
RD11-SE-3   SUPERELEVATION TRANSITION DETAILS FOR ROADWAYS WITH DIVIDED MEDIAN
RD11-SE-3A   SUPERELEVATION TRANSITION SECTIONS FOR ROADWAYS WITH DIVIDED MEDIAN
     

RD11 SLOPE DEVELOPMENT AND RUNOFF LENGTHS
DRAWING REVISION DATE DESCRIPTION
RD11-LR-1   MINIMUM RUNOFF LENGTHS (LR)
RD11-LR-2   MINIMUM RUNOFF LENGTHS (LR) FOR RURAL HIGHWAYS
RD11-S-11   DESIGN AND CONSTRUCTION DETAILS FOR ROADSIDE SLOPE DEVELOPMENT
RD11-S-11A   ROADSIDE DITCH DETAILS FOR DESIGN AND CONSTRUCTION
RD11-S-11B   DESIGN AND CONSTRUCTION DETAILS FOR ROCK CUT SLOPE AND CATCHMENT
RD11-SA-1   SAFETY APPROACH TO UNDERPASSES GRADING DESIGN AND SLOPE PROTECTION
     

RD11 INTERSECTION SIGHT DISTANCE
DRAWING REVISION DATE DESCRIPTION
RD11-SD-1   INTERSECTION SIGHT DISTANCE DESIGN AND GENERAL NOTES
RD11-SD-2   INTERSECTION SIGHT DISTANCE LANDSCAPE AND OBSTRUCTION
RD11-SD-3   INTERSECTION SIGHT DISTANCE 2-LANE ROADWAYS
RD11-SD-4   INTERSECTION SIGHT DISTANCE 4-LANE AND 5-LANE UNDIVIDED ROADWAYS
RD11-SD-5   INTERSECTION SIGHT DISTANCE 4-LANE DIVIDED HIGHWAYS
RD11-SD-6   INTERSECTION SIGHT DISTANCE 6-LANE DIVIDED HIGHWAYS
RD11-SD-7   INTERSECTION SIGHT DISTANCE FOR PASSIVE RAILROAD HIGHWAY GRADE CROSSINGS
     

SLOPE DEVELOPMENT
DRAWING REVISION DATE DESCRIPTION
RD01-S-11
04/04/2003
DESIGN AND CONSTRUCTION DETAILS FOR ROADSIDE SLOPE DEVELOPMENT
RD01-S-11A
10/15/2002
ROADSIDE DITCH DETAILS FOR DESIGN AND CONSTRUCTION
RD01-S-11B
10/15/2002
DESIGN AND CONSTRUCTION DETAILS FOR ROCK CUT SLOPE AND CATCHMENT
RD01-SA-1
10/15/2002
SAFETY APPROACH TO UNDERPASSES GRADING DESIGN AND SLOPE PROTECTION
     

INTERSECTION SIGHT DISTANCE
DRAWING REVISION DATE DESCRIPTION
RD01-SD-1  
INTERSECTION SIGHT DISTANCE DESIGN AND GENERAL NOTES
RD01-SD-2  
INTERSECTION SIGHT DISTANCE LANDSCAPE AND OBSTRUCTION
RD01-SD-3  
INTERSECTION SIGHT DISTANCE 2-LANE ROADWAYS
RD01-SD-4  
INTERSECTION SIGHT DISTANCE 5-LANE AND 4-LANE UNDIVIDED ROADWAYS
RD01-SD-5  
INTERSECTION SIGHT DISTANCE 4-LANE DIVIDED HIGHWAYS
RD01-SD-6  
INTERSECTION SIGHT DISTANCE 6-LANE DIVIDED HIGHWAYS
RD01-SD-7  
INTERSECTION SIGHT DISTANCE FOR PASSIVE RAILROAD HIGHWAY GRADE CROSSINGS
     

UNDERDRAINS
DRAWING REVISION DATE DESCRIPTION
RD-UD-3
09/05/1996
UNDERDRAIN DETAILS
RD-UD-4
01/25/2016
UNDERDRAIN LATERAL DETAILS
RD-UD-6
12/18/1994
LATERAL UNDERDRAIN ENDWALL DETAIL FOR 1:1 & 2:1 SLOPES
RD-UD-7
12/18/1994
LATERAL UNDERDRAIN ENDWALL DETAIL FOR 3:1 & 4:1 SLOPES
RD-UD-8  
LATERAL UNDERDRAIN ENDWALL DETAIL FOR 5:1 SLOPES
RD-UD-9
12/18/1994
LATERAL UNDERDRAIN ENDWALL DETAIL FOR 6:1 SLOPES
     

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: June 17, 2019 at 7:19 AM