Section 200. Harford County, Maryland.
WRA completed preliminary engineering and alternatives development for Section 200, one of four independent project-planning studies identified in the I-95 Master Plan Study. The Section 200 project limits extend from north of MD 43 to north of MD 22, or approximately 16 miles. WRA developed two mainline build alternates (General Purpose Lane Alternate and an Express Toll Lane Alternate) and numerous options for four interchanges (MD 152, MD 24, MD 543 and MD 22) in order to identify the locally preferred alternate and to define the associated impacts, costs, and engineering issues. The 36 interchange configurations developed ranged from diamond interchanges to single point urban interchanges and partial cloverleaf with directional flyovers. The complexity and operations of the mainline alternates and interchange options necessitated the preparation of a special study to evaluate police, emergency service and maintenance operations.
Prepared preliminary highway designs for the mainline and interchange alternates along the 16 mile corridor.
Conceptual structural engineering design was completed for 43 structures and four interchanges. Several of the retaining walls were designed to support an existing 108 inch water main that paralleled the project.
Surveying services consisted of aerial photogrammetry, boundary surveys to locate existing right of way lines and topographic surveys at selected pavement tie-in and critical areas.
WRA developed construction phasing and maintenance of traffic plans to provide efficient work areas for the contractor while maintaining the flow of traffic along I-95.