1. Study Goals
Analyze traffic operations along the corridor and at the two study interchanges
Provide safety enhancements
Improve multimodal performance and better accommodate pedestrians
Minimize potential construction costs

2. Study Area
Our study area is the section of NC 54/US between Raleigh Rd and NC 86 (South Columbia St) and includes:
US & Raleigh Rd (Interchange)
US & Old Mason Farm Rd
US & Manning Dr
US & South Columbia St (Interchange)

3. Study Area Chapel Hill US 15-501 Raleigh Rd NC 54 Manning Dr
Old Mason Farm Rd
NC 86 US

4. Preliminary Assumptions – Raleigh Rd
Study Scenarios:
Existing Year (2016) No-Build
Future Year (2030) Build
Peak Hours:
Weekday AM
Weekday PM
Annual growth rate of 1%

5. Design Concept – Raleigh Rd

6. Preliminary Results & Observations – Raleigh Rd
Two proposed signals on Raleigh Rd and one on NC 54/US south of Raleigh Rd all intersecting with ramps
Proposed signals are operating at LOS C or better during weekday peak hours
Improves safety at interchange by eliminating weave segments on Raleigh Rd
Better accommodates pedestrians by providing crosswalks/ped phasing at signals on Raleigh Rd
Old Mason Farm Rd/Carmichael Ct intersection is operating at LOS E during the AM peak and LOS F during the PM
Not really a short term option, need to do something different

7. Design Concept – Old Mason Farm Rd
Concept re-routes traffic to spread the impact over 2 intersections.
Short Term solution (access changes), Long Term solution (Continuous Green T)
Short term, close off access and put in new two phase signal, longer term go to Continuous Green T US
Farm Rd
Old Mason

8. Design Concept – Manning Dr
Concept re-routes traffic to spread the impact over 2 intersections.
Short Term solution (access changes), Long Term solution (Continuous Green T)
Manning Rd US
Kings Mill Rd
Short term, close off access and put in new two phase signal, longer term go to Continuous Green T

9. Corridor Approach
Synchronized Street concept on US ; between Manning Dr & Old Mason Farm Rd US
IF you don’t want to close approaches can go to more of a traditional superstreet
Old Mason Farm Rd

10. Preliminary Assumptions – NC 86
Study Scenarios:
Existing Year (2014) No-Build
Future Year (2040) Build
Peak Hours:
Weekday AM
Weekday PM
Utilizing volumes from US Widening – Project Level Traffic Forecast (U-5304)

11. Design Concept – NC 86
Evaluating grade separated intersection idea that was developed by Dr. Hummer
Will analyze after concurrence with Hummer’s concept