In addition to the transportation planning activities in support of major highway design and development projects, CLD also conducts a wide range of traffic/signal engineering analysis, and numerous traffic impact evaluations for various development types and sizes.

Our Transportation Engineering Services include:
• Traffic Engineering/Impact Studies
• Roadway/Intersection Design
• Traffic Signal System Design
• Transportation Planning

• Bicycle/Pedestrian Facilities
• Parking Facilities Evaluation and Design
• Drainage Design
• Geometric Design

LONG HILL ROAD INTERSECTION IMPROVEMENTS - CITY OF DOVER, NH
The City of Dover employed CLD to provide final design and preparation of contract documents to signalize the intersection of NH Route 108 and Long Hill Road and widen NH Route 108 to provide 11-foot wide lanes, a longer northbound left-turn lane, and 4-foot shoulders.
MANCHESTER-BOSTON REGIONAL AIRPORT
AIRPORT ACCESS ROAD IMPROVEMENTS


The Manchester-Boston Regional Airport needed to increase the capacity and operational efficiencies of the existing airport access road until the larger regional access improvement project could be completed.
CITY OF PORTSMOUTH
CITY-WIDE INTERSECTION/
SIGNALIZATION IMPROVEMENTS
The City of Portsmouth was in need of upgraded signal equipment at numerous locations, future emergency vehicle preemption, full actuation to optimize operational efficiency, and savings on operational cost by increasing energy efficiency using LED lenses and new signal controllers.
NH Route 108 (South Main Street) Reconstruction, Roches ter, NH
Lowell Road Sidewalks, Hudson, NH
NH Route 11 (Farmington Road) Intersection Improvement, Rochester, NH
NH Route 102 (Derry Street) Sidewalks, Hudson, NH
NH Route 202 (Washington Street) Reconstruction, Rochester, NH
Safe Routes to School, Plaistow, NH
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