City of Frisco Engineering Standards

Engineering Standards
TABLE 2.1: General Roadway Design Criteria
Criteria
Right-of-Way
(ROW)
Pavement Width
(face to face)
Major
Type A
Minor
Type B
Thoroughfare Class
Commercial
Collector
Type C
Local
Type D
Local
Type E
Local
Type F
Local
Type G
120’ (1) 90’ (2) 60’ 60’ 50’ 60’ 60’
36’ in each
direction
24’ in each
direction
36’ 36’ 26’ 30’ 26’
Traffic Lanes 6 4 2 2 2 2 2
Left Turn-lane
Width
Right Turn-lane
Width
2 @ 10’ 1 @ 11’ N.A. N.A. N.A. N.A. N.A.
11’ 11’ N.A. N.A. N.A. N.A. N.A.
Median Width 24’ 18’ N.A. N.A. N.A. N.A. N.A.
Parkway Width 12’ 12’ 12’ 12’ 12’ 15’ 17’
Design Speed, V
(MPH)
45 45 30 30 25 25 25
Minimum Grade 0.8% 0.8% 0.8% 0.8% 0.8% 0.8% 0.8%
Maximum Grade 6% 6% 6% 6% 6% 6% 6%
Min. Horizontal
Radii
Min. Tangent
Between Curves
Min Length of
Vertical Curve
Stopping Sight
Distance
See Table 2.2
100’ 100’ 100’ 100’ N.A. N.A. N.A.
See Table 2.3 and Table 2.4
425’ 360’ 200’ 200’ 155’ 155’ 155’
Parking Prohibited Prohibited Prohibited Allowed Allowed Allowed Allowed
Volume Range
36-45,000 20-28,000 12-18,000 6-12,000 N.A. N.A. N.A.
(VPD)
(1) 140’ or 160’ ROW at intersections (See Figures 2.2 and 2.4)
(2) 110’ or 120’ ROW at intersections (See Figures 2.3 and 2.5)
Section 2 – Thoroughfare Design Requirements May 2012 Page 2-5