Roadway Design
Spectrum Drive Improvements
Frederick County Department of Public Works
In order to improve traffic capacity, operation and vehicular flow, BAI provided engineering services for the reconstruction of Spectrum Drive, Holiday Drive and Lowes Lane, beginning at the intersection of MD Route 85. The project involved extensive preliminary planning for the road network, including roadway widening, intersection alignment, commercial access (to the Francis Scott Key mall), roundabout, traffic signalization and mall parking reconstruction.
In cooperation with the Frederick County Department of Public Works, BAI initially provided traffic engineering analysis, including Synchro/SimTraffic modeling and simulation, vehicle queue determination, traffic signals and roundabout alternative, capacity projections, level-of-service, and vehicle and pedestrian safety investigations. Engineering design services included the development of complete construction plans, specifications and cost estimates for roadway improvements involving: grinding and pavement overlay, full-depth pavement widening, drainage improvements, continuous curb and gutter and concrete sidewalk throughout the project, a roundabout at the intersection of Spectrum Drive and Holiday Drive East, stormwater management and permitting, and erosion and sediment control.
BAI provided traffic signal design services for the intersections of Spectrum Drive at Holiday Drive East, Lowes Lane and at the Mall Entrance. Detailed phased construction plans were prepared in order to maintain vehicular access to the mall during construction.
US Route 15 Auxiliary Lane
Maryland State Highway Administration, District 7 Office
US Route 15 is a four-lane divided National Highway in Frederick County, Maryland. BAI is responsible for developing design documents for the construction of a continuous auxiliary lane on northbound US 15, from the Motter Avenue interchange to the MD 26 interchange.
BAI managed the collection of topographic survey data, wetland boundary locating, and provided construction plans, including: horizontal geometry of the base widening, development of a superelevation diagram, relocation of traffic barrier, environmental site design for stormwater management and erosion/sediment control, signing and pavement marking plans, maintenance of traffic plans, and preparation of cross sections.
In conjunction with the roadway design services, BAI developed details for management of stormwater within the limits of the project. Coordination with State Highway Administration, Highway Hydraulics Division (HHD), and the MDE has been provided throughout the development of the stormwater management report and plans and for the erosion and sediment control plans .
The signing and pavement marking plans included installation of a new overhead sign. BAI coordinated with the District Traffic Section to prepare the detailed layout of the sign location, content, structural support, and lighting. To prepare for construction, BAI has performed traffic counts and analysis to determine the effect of lane closure on traffic operations, and to determine time-of-day lane closure restrictions.
MD Route 51 Reconstruction
Maryland State Highway Administration, District 6 Office
In cooperation with the Maryland State Highway Administration, BAI was responsible for the reconstruction and rehabilitation of a half-mile of MD Route 51/Industrial Boulevard from West 3rd Street to Pennsylvania Avenue.
MD Route 51/Industrial Boulevard was originally rehabilitated in 2006. However, due to deterioration of the underlying pavement, there is need to repair the pavement and install new curb and gutter. There is also a need to verify ADA compliance for all the sidewalks and sidewalk ramps within the project limits, and upgrade to current standards as necessary.
This project included development of construction plans, specifications and cost estimates and involved pavement mill, overlay and full reconstruction, curb and gutter, inlet modifications, sidewalks and ADA compliant ramps, roadside safety grading, stormwater management, erosion and sediment control, work zone traffic control, and pavement markings and signing.