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Garden State Parkway Widening – MP 30 to 48

The New Jersey Turnpike Authority (NJTA) has embarked on a program to widen the Garden State Parkway (GSP) between mileposts 30 and 48 where an additional lane is proposed to be added to the existing two Northbound and Southbound lanes. This includes the expansion of the Atlantic City Reservoir (ACR) Bridge located in Atlantic County near mile post (MP) 39.3 on the Garden State Parkway (GSP), the construction of culvert extensions between MP 34.5 and MP 44.8, and a drainage pipe extension at MP 35.9. The existing ACR bridges are single span and extend over the Atlantic City Reservoir flume. The new construction at the ACR bridge involves widening of the bridge, construction of wing walls and abutments, and embankment construction by the approach ramps.

YU & Associates (YU) performed the geotechnical subsurface investigation and prepared NJTA customized boring logs and detailed soil profiles for the Garden State Parkway Grading and Drainage Improvements Report. YU prepared a detailed Geotechnical Engineering Report, which included description of subsurface conditions, consideration of deep and shallow foundation options, liquefaction analyses, determination of seismic design parameters, lateral earth pressure analyses for reinforced concrete and mechanically stabilized wall for normal and seismic loading, slope stability analysis, settlement analysis, excavation support, and foundation design. All work was performed in general accordance with AASHTO, LRFD Bridge Specification and NJTA design manual.


Atlantic County,
New Jersey


  • Boring inspection and Field Testing
  • gINT Logs and Profiles
  • Retaining wall design recommendations
  • Seismic evaluations
  • LRFD Foundation Design Recommendations
T&M Associates, Inc.
NJ Turnpike Authority