I-97: I-695 to South of MD 176

Location:	Anne Arundel County, Maryland
Clients:	Maryland State Highway Administration

Prior to its reconstruction, I-97 south of the Baltimore Beltway was known as MD 3, a 4-lane road extending from Baltimore to US 50/US 301 near Bowie. We designed the reconstruction of a 2.7-mile long section, including two interchanges (MD 176, MD 648), to provide a 6-lane facility. Included were three bridges, 1,500 linear feet of retaining walls, and 9,000 linear feet of noise barriers. Special measures were provided for fish passage on Sawmill Creek. I-97 is now a full access controlled highway connecting Baltimore and Annapolis.

Our services also included surveys, drainage studies, noise analysis, and partnering during construction. A special challenge on this project was the Maintenance of Traffic procedures during construction, with the entire roadway having to be reconstructed and widened while carrying about 70,000 vehicles per day.

This project won the Maryland Pride Award of Excellence in 1996.