D&L Trail Planning & Design Services

Upper Merion Township, Montgomery County, PA


D&L National Heritage Center
2750 Hugh Moore Park Road
Easton, PA 18042

Bucks County TMA (Green Lane Only)
7 Neshaminy Interplex, Suite 103
Trevose, PA 19053



Green Lane – 2016 (Constructed)
White Haven – 2015
Middleburg Road – 2017 (Constructed)
Oliver Mills – 2015


TPD was retained for various contracts spanning from 2013-2017 to provide planning, engineering and construction services for the 165-mile long D&L Trail in Eastern PA. The D&L trail connects Wilkes Barre to Philadelphia and serves as the East Coast Greenway alignment for sections near Philadelphia.


TPD was hired by the Pennsylvania Environmental Council (PEC) for preliminary design and grant assistance for a critical trail gap for the D&L Trail in Bucks County, PA. Subsequently, TPD was hired by the Bucks County TMA (grant administrator for the D&L and PEC) for final design and construction inspection services. TPD completed the following task for this trail gap:

– Conceptual planning to evaluate the most cost-effective, efficient and safe greenway alignment

– Constrained design with a highway on/off ramp, multiple private driveways, high speed/high volume state road, PA Turnpike overpass, a railroad line, historic canal crossing and an ongoing DOT roadway reconstruction project that was in preconstruction stages

– Cost estimates & preparation/coordination of a construction grant application

– Final design for a shared use path/side path design, canal crossing and an overhead passive detection Rectangular Rapid Flashing Beacon (RRFB)

– Preliminary design for the adjacent US 13 crossing, railroad crossing and sidepath design that were eventually constructed by the DOT as part of the US 13 construction work

– DOT Permitting

– Bid documents and review of all necessary contract documents

– Construction management and construction inspection



– Trail user wayfinding

– Crossing safety improvements

– Downtown trail integration

– Alignment feasibility



TPD provided responsive service and quick plan modifications throughout the PS&E process for the trail design. As such the trail construction was completed in the fall of 2017, on time.

TPD provided the following services for the D&L Trail gap, near Middleburg Road, in Luzerne County PA:

– Trail alignment evaluation

– Sight distance, speed and crossing treatment recommendations

– Deed research

– Railroad crossing improvements and coordination through state utilities commission process

– Identification of funding and successful letter of justification to receive state railroad safety funds for trail crossing

– Stakeholder, community outreach and consensus building

– Preliminary design and cost estimates

– Environmental permitting coordination

– Federal multimodal (TAP) grant application assistance

– Final design (PS&E requirements for federal funding)

– Prepared bid documents and reviewed all necessary contract documents

– Construction management and construction inspection



– Trail grant funding preparation/assistance

– Roadway sight distance and crash analyses

– Traffic and trail crossing safety evaluation

– Railroad crossing and drainage design input

– Trail alignment recommendation

East Marlborough Township, Chester County, PA

Service(s): Multimodal, Complete Streets & Mobility Services, Traffic Signal & ITS Systems, Municipal Engineering Services, Highway Design
Client(s): East Marlborough Township

Lehigh Valley, PA

Service(s): Multimodal, Complete Streets & Mobility Services
Client(s): Lehigh Valley Planning Commission

West Whiteland Township, Chester County, PA

Service(s): Multimodal, Complete Streets & Mobility Services & Construction Management & Inspection Services
Client(s): West Whiteland Township