Roadway Design Standards

Revised: July 26, 2023
RD18 TYPICAL SECTIONS AND DESIGN CRITERIA
DRAWING RELATED IB REVISION DATE DESCRIPTION
RD18-RTS-1     DESIGN STANDARDS FOR SINGLE LANE URBAN AND RURAL ROUNDABOUTS
RD18-RTS-2     DESIGN STANDARDS FOR MULTI-LANE URBAN AND RURAL ROUNDABOUTS
RD18-RTS-3     STANDARD CONSTRUCTION DETAILS FOR ROUNDABOUTS
RD18-RSD-1     SIGHT DISTANCE FOR URBAN AND RURAL ROUNDABOUTS
       

RD18 SLOPE DEVELOPMENT AND RUNOFF LENGTHS
DRAWING RELATED IB REVISION DATE DESCRIPTION
       
       

RD18 INTERSECTION SIGHT DISTANCE
DRAWING RELATED IB REVISION DATE DESCRIPTION
       
       

RD11 TYPICAL SECTIONS AND DESIGN CRITERIA
DRAWING RELATED IB REVISION DATE DESCRIPTION
RD11-SE-1     TRANSITION AND CROSS SLOPE DETAILS
RD11-SE-2     SUPERELEVATION TRANSITION DETAILS FOR UNDIVIDED ROADWAYS
RD11-SE-2A     SUPERELEVATION TRANSITION SECTIONS FOR UNDIVIDED ROADWAYS
RD11-SE-3     SUPERELEVATION TRANSITION DETAILS FOR DIVIDED ROADWAYS
RD11-SE-3A     SUPERELEVATION TRANSITION SECTIONS FOR DIVIDED ROADWAYS
RD11-TS-1
  06/28/2019 DESIGN STANDARDS FOR LOW-VOLUME ROADS
RD11-TS-1A     06/28/2019 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
  06/28/2019 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
  06/28/2019 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   06/15/2021 TYPICAL DETAILS 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   07/17/2020 DESIGN STANDARDS 2-LANE CURB & GUTTER WITH CONTINUOUS 2-WAY LEFT-TURN LANE WITHOUT GRASS STRIPS
RD11-TS-7A   07/17/2020 DESIGN STANDARDS 2-LANE CURB & GUTTER WITH CONTINUOUS 2-WAY LEFT-TURN LANE WITH GRASS STRIPS
RD11-TS-7B   07/17/2020 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 SLOPE DEVELOPMENT AND RUNOFF LENGTHS
DRAWING RELATED IB REVISION DATE DESCRIPTION
RD11-LR-1     MINIMUM RUNOFF LENGTHS (Lr) FOR URBAN HIGHWAYS
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 INTERSECTION SIGHT DISTANCE
DRAWING RELATED IB 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
       

RD01 TYPICAL SECTIONS AND DESIGN CRITERIA
DRAWING RELATED IB REVISION DATE DESCRIPTION
RD01-SE-2   10/15/2002 URBAN SUPERELEVATION DETAILS
RD01-SE-3   10/15/2002 RURAL SUPERELEVATION DETAILS
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 SLOPE DEVELOPMENT
DRAWING RELATED IB 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
       

RD01 INTERSECTION SIGHT DISTANCE
DRAWING RELATED IB 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 RELATED IB REVISION DATE DESCRIPTION
RD-UD-3    
06/28/2019
UNDERDRAIN DETAILS
RD-UD-4    
06/28/2019
UNDERDRAIN LATERAL DETAILS
RD-UD-6
 
06/28/2019
LATERAL UNDERDRAIN ENDWALL DETAIL FOR 1:1 & 2:1 SLOPES
RD-UD-7
 
06/28/2019
LATERAL UNDERDRAIN ENDWALL DETAIL FOR 3:1 & 4:1 SLOPES
RD-UD-8
  06/28/2019
LATERAL UNDERDRAIN ENDWALL DETAIL FOR 5:1 SLOPES
RD-UD-9
 
06/28/2019
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: July 26, 2023 at 2:49 PM