Civil, Highway & Structural Engineering

SAI offers a staff with extensive technical expertise including developing roadway design plans from the conceptual stages, hosting public outreach meetings, to the development of Plans, Specifications, and Estimates (PS&E); providing construction support services; reviewing design/build and roadway/highway plans developed by other consultants; and providing design support during the construction phase.

SAI also offers strong capabilities in other civil engineering areas such as  on-call civil, highway, structural, and traffic engineering contracts with several divisions and Districts of the Maryland State Highway Administration (MD SHA), including District 3 (Prince George’s and Montgomery County), District 4 (Harford and Baltimore Counties) and District 7 (Frederick, Howard, and Carroll Counties). In addition we have performed work for counties and municipalities in the region including Washington County in Maryland and the City of Falls Church in Virginia. SAI’s civil and highway engineering department has been involved with the City of Baltimore’s Transportation Programs since 1998 and have completed over 100 projects throughout the City.

Department Services:

  • Earthwork/Cross-sections
  • Engineering Feasibility Studies
  • Conceptual Development Studies
  • Signing and Pavement Marking Plans
  • Quantity Take Off
  • Estimates and Specifications
  • Constructability Reviews
  • Vertical Roadway Alignment
  • Drainage Design
  • Site Planning/Grading
  • Warehouse and Storage Facilities Design
  • Utility Research
  • ADA Compatibility Design
  • Maintenance of Traffic (MOT)
  • Resurfacing/Reconstruction Roadway Projects
  • Stormwater Management Design/Analysis
  • GIS Utility Information Verification and/or Updating
  • Property Research to determine Utility Easements
  • Placing Utilities accurately in CADD files
  • Utility Coordination with both Public and Private Utilities
  • Miss Utility Coordination
  • Railroad Coordination
  • Cost Estimation of Utility Work
  • Utility Conflict Identification and Resolution
  • Utility Structure Rehabilitation
  • Conduit Planning and Design
  • New Water Main Design
  • Roadway Storm Drain Design
  • Safety and Engineering Improvements
  • Roadway Storm Drain Design
  • Erosion and Sediment Control Design
  • Reservoir Design
  • Sewer Main, Pump Station and Treatment Plant Design
  • Storm Water Pump Station Design
  • Storm Water Vault or Storage Design
  • Electric Transmission, Distribution, Vault and Manhole Design
  • Telecommunications (including Fiber Optic) Conduit, Manhole, Vault and Structural Support Design
  • Bridge and Culvert Inspection and Ratings
  • Bridge Rehabilitation/Replacement Design
  • Retaining Wall and Noise Wall Inspection
  • Retaining and Noise Wall Rehabilitation/Replacement Design
  • Culvert Rehabilitation/Replacement Design
  • Sign Structure Inspection
  • Sign Structure Design
  • Utility Structure Design
  • Construction Support Services
  • Miscellaneous Highway Structures Design
  • Building Rehabilitation Design

Practice Leader:

Shashi Patel, P.E.


Mr. Patel brings over 25 years of combined experience in design and project management of transportation engineering  for traditional design-bid-build, design-build and site development. He has directed and supervised numerous highway and bridge replacement/rehabilitation projects ranging from concept development studies to preliminary and final engineering design including geometric design, drainage and stormwater management, erosion and sediment control design, utility and right-of-way coordination, site development and access permits, environmental permitting, maintenance of traffic, and post-design construction phase services.


His expertise encompasses design and rehabilitation of roadways ranging from complete streets to expressways and freeways, streetscaping, intersection improvements, safety improvements, capacity improvements, roundabouts, retrofit bike lanes, retrofit sidewalk and ADA ramps, drainage improvements, park-and-ride facilities, noise walls, site development, highway inspection, sight distance improvements, pavement rehabilitation and embankment repairs.

Columbia Maryland

7055 Samuel Morse Drive
Suite 100
Columbia, MD 21046
Phone: 443-741-3500
Fax: 443-741-3700

Baltimore Maryland
1502 Joh Avenue
Suite 100
Baltimore, MD 21227

Phone: 410-536-3653
Fax: 410-536-3654

Washington, D.C.

100 M Street SE
Suite 550
Washington, DC 20003

Phone: 202-570-7080
Fax: 202-697-5007

Vienna, Virginia

8150 Leesburg Pike
Suite 630
Vienna, VA 22182

Phone: 703-942-8990


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