Table 4.10. Superelevation Rotation Points and Rotation Widths

Number of Lanes

Median Width (ft.)

Median
Type

Barrier Inside

Barrier Outside

Symmetric Widening

Asymmetric Widening

New Location

Reconstruction

Horizontal Location
of Rotation Point

Rotation Width (ft.)

Urban Typical Section

2

0

N/A

X

X

CL of pavement

12

3

14

Flush

X

X

CL of new pavement

19

3

14

Flush

X

CL of old pavement

26

5

14

Flush

X

X

X

X

CL

31

4

20

Raised

X

X

X

X

CL

34

6

20

Raised

X

X

X

X

CL

46

4

24

Raised

X

X

X

X

CL

36

6

24

Raised

X

X

X

X

CL

48

Rural Typical Section

2

0

N/A

X

X

CL of pavement

12

3

14

Flush

X

X

CL of new pavement

19

3

14

Flush

X

CL of old pavement

26

5

14

Flush

X

X

X

X

CL of pavement

31

4

20

Raised

X

X

X

X

CL of pavement

34

6

20

Raised

X

X

X

X

CL of pavement

46

4

24

Raised

X

X

X

X

Inside of TL 1

36

6

24

Raised

X

X

X

X

Inside of TL 1

48

4

32

Depressed

X

X

X

X

Inside of TL 1

24

6

32

Depressed

X

X

X

X

TL 1

-

4

44

Depressed

X

X

X

X

Inside of TL 1

24

6

44

Depressed

X

X

X

X

TL 1

-

Ramp Typical Section

1*

0

N/A

X

X

X

X

Outside edge of TL

16

2*

0

N/A

X

X

X

X

Outside edge of TL 2

24

1*

0

N/A

X

X

X

X

X

X

Outside edge of TL

16

2*

0

N/A

X

X

X

X

X

X

Outside edge of TL 2

24

Limited Access Typical Section

1*

0

N/A

X

X

X

X

X

X

Inside of TL 1

12

2*

0

N/A

X

X

X

X

X

X

Inside of TL 1

24

3*

0

N/A

X

X

X

X

X

X

Varies

-

4*

0

N/A

X

X

X

X

X

X

Varies

-

Hybrid Typical Section

2

44

Depressed

X

X

X

X

X

Inside of TL 1

24

3

44

Depressed

X

X

X

X

X

Inside of TL 1

36

4

44

Depressed

X

X

X

X

X

Between TL 1 and TL 2

36

2

52

Depressed

X

X

X

X

X

Inside of TL 1

24

3

52

Depressed

X

X

X

X

X

Inside of TL 1

36

4

52

Depressed

X

X

X

X

X

Between TL 1 and TL 2

36

2

64

Depressed

X

X

X

X

X

Inside of TL 1

24

3

64

Depressed

X

X

X

X

X

Inside of TL 1

36

4

64

Depressed

X

X

X

X

X

Between TL 1 and TL 2

36

3

28

Flush w/ Barrier

X

X

X

X

X

Between TL 1 and TL 2

24

4

28

Flush w/ Barrier

X

X

X

X

X

Between TL 1 and TL 2

36

5

28

Flush w/ Barrier

X

X

X

X

X

Between TL 2 and TL 3

36

3

32

Flush w/ Barrier

X

X

X

X

X

Between TL 1 and TL 2

24

4

32

Flush w/ Barrier

X

X

X

X

X

Between TL 1 and TL 2

36

5

32

Flush w/ Barrier

X

X

X

X

X

Between TL 2 and TL 3

36

3

40

Flush w/ Barrier

X

X

X

X

X

Between TL 1 and TL 2

24

4

40

Flush w/ Barrier

X

X

X

X

X

Between TL 1 and TL 2

36

5

40

Flush w/ Barrier

X

X

X

X

X

Between TL 2 and TL 3

36

* One-Way

Notes:      

1. Outside Typical Sections                                               

2. Assume 12-ft. Lane Widths                                           

3. On raised medians, PGL is located by projecting pavement cross slope to the centerline         

Symbols:

CL = Centerline    

TL = Travel Lane