U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Construction

<< PreviousContentsNext >>

Partnering for Innovation
US 421/I-40 Business in Winston-Salem

Appendix C: Geometric/Hydraulic Design

IDEA (Short Name) IDEA (Detailed Description) Implementation Details (Barriers, Skill Set Coordination, etc.)
Broad Street
  • Eliminate access at Broad Street.
  • Move access to Peters Creek Parkway interchange.
  • Extend Peters Creek to First Street as part of the ballpark redevelopment.
 
Access
  • Manage access; develop two good interchanges to replace the current four.
  • Close vehicle access at 4th Street, Green Street and Spruce Street.
Sight distance
  • Lower the mainline profile only in the vicinity of Marshall/Cherry to improve sight distance and view the corridor.
 
Split diamond Consider the following options:
  1. Construct a split diamond with one-way C-D roads from Marshall to Main Street. This option provides access to Marshall, Cherry, Liberty and Main Street.
    • Cantilever or box I-40 Business from Marshall to Cherry.
    • Replace Liberty mainline viaduct with a walled section.
  2. Construct a split diamond to Marshall and Cherry.
    • No need for C-D roads.
    • No access at Main St.
 
Liberty Street
  • Relocate Liberty to Main Street alignment.
 
Enhancements
  • Consider pedestrian/bicycle enhancements and wider bridges.
 
Additional capacity
  • Add flexibility of access lane in each direction.
 
Total closure
  • Recommend total closure for 14 to 18 months, not for entire construction period.
 
<< PreviousContentsNext >>
Updated: 11/06/2013
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000