US 221 (Marion Bypass)
US 117 north of I-40
US 74 west of Waynesville
US 64 in Apex
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- Functional Purpose:
High Mobility, Low to Moderate Access
- AASHTO Design Classification:
Arterial
- Posted Speed Limit:
45 mph to 60 mph
- Control of Access:
Limited or Partial
- Traffic Signals:
Not Allowed
- Driveways:
Limited Control of Access - Not Allowed
Partial Control of Access - One Driveway Connection per Parcel;
Consolidate and/or Share Driveways and Limit Access to Connecting Streets
or Service Roads; Restrict to Right-in/Right-out
- Cross-Section:
Minimum 4 Lanes with a Median
- Connections:
Provided only at Interchanges for Major Cross
Streets and At-Grade Intersections for Minor Cross Streets; Use of Acceleration
and Deceleration Lanes for At-Grade Intersections
- Median Crossovers:
Allowed; Alternatives to All-Movement
Crossovers Encouraged; Minimum Spacing between All-Movement Crossovers is
2000 feet (posted speed limit of greater than 45 mph) or 1200 feet
(posted speed limit of 45 mph or less)
- Examples:
US 221 (Marion Bypass), US 220 in Rockingham
County, US 321 south of Lenoir, US 117 north of I-40; US 74 (Independence Blvd)
just east of I-277 in Charlotte, US 74 west of Waynesville, US 29 in Guilford
County, US 301 north of Wilson, US 64 in Apex
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