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Lennon Smith Souleret Engineering – Lawrence Lennon PE

846 Fourth Avenue Coraopolis PA 15108 Work Phone: 412-264-4400 Website: https://www.lsse.com


Lennon Smith Souleret Engineering (LSSE), established in 1985, is a distinguished civil engineering firm, serving a diverse range of markets including municipal, commercial, institutional, industrial, residential, and utilities and energy sectors. With over 35 years of expertise, LSSE has developed a reputation for excellence, as evidenced by their high client satisfaction ratings.

Our core services focus on civil engineering and surveying, with a strong commitment to delivering successful projects. Our services include civil site engineering, geographic information systems (GIS) services, stormwater management, surveying, wastewater facilities engineering, and water facilities engineering. These services are tailored to meet the specific needs of each market we serve, ensuring a customized approach for every client.

LSSE’s dedication to client satisfaction has been consistently rated between “Excellent” and “Outstanding” in over 580 project quality reviews. This achievement reflects our commitment to quality and client-focused service.

In addition to our headquarters in the Pittsburgh area, we have branch offices in Westmoreland County, Erie County, Franklin County, Ohio, and Beaver County, enabling us to serve a broad geographic area.

List of Services:

  • Civil Site Engineering
  • Geographic Information Systems (GIS) Services
  • Stormwater Management
  • Surveying
  • Wastewater Facilities Engineering
  • Water Facilities Engineering
  • Infrastructure Planning
  • Street Design
  • Pavement Inspection and Management
  • Land Use Studies Conduction