Loudoun County Public Schools retained Bowman for the construction of 4,800 sq. ft. 3-classroom additions to 6 existing elementary schools. Each school addition was a separate site plan design and application process including geometric layout, grading, roof drain design, analysis of the existing SWM/BMP system, erosion & sediment control measures, and coordination with the architect.
The project involves the construction of a new elementary school on the existing campus. To maintain critical open space, a new two-level below-grade parking structure with access from a new bus driveway was proposed below the footprint of the new school building. Bowman provided a full scope of civil engineering services.
Bowman was retained to provide detailed design of concrete footings and steel pipe supports for this Intermediate Leach System (ILS) which includes two pipelines.
Bowman performed value engineering and design optimization for the phase II design of a leach pad in a canyon with aggressive slopes (~2.5H:1V). The design included liner subgrade, geomembrane and GCL, solution collecting pipe network, and overliner drain rock.
Bowman performed the engineering design and construction quality assurance for multiple stormwater retention dams. The design process included watershed analyses, lithological investigation and interpretation, earthen structure stability analyses, and flow considerations for a 100-year storm event.
Bowman provided the concrete slabs, foundations, and anchor designs for new infrastructure for the expansion of the Hydromet area to allow the SX/EW facili-ties to handle increased throughput. This work included the structural design and drawings, identifying civil components such as tops of concrete on footings and slabs, ensuring drainage to the existing drain sump and the addition of a contain-ment curb to improve capture of spills.
As a result of a new pit being developed at the mine, a haul road was developed from the pit to the existing crushing facility. Bowman designed six (6) culverts that allow stormwater to flow under the new haul road.
Grand County, Winter Park Ranch Water and Sanitation District, and the Town of Fraser had a common interest in completing infrastructure improvements in County Road 804, including a new storm sewer system, a water main replacement, and improvements to the existing road surface and new road striping.
Bowman was responsible for Phase I and Phase II design for the Open Road Tolling Program, roadway widening, bridge widening, and toll and interchange ramp modifications on the I-294 tollway. Bowman worked closely with Illinois Tollway during Phase I and Phase II.
Bowman provided Phase II design services for the replacement of the Lake Shore Drive (US 41) Viaducts over Lawrence Avenue and Wilson Avenue. Both roadways will be reconstructed to provide minimum vertical clearance under US 41 as well as a new typical section to accommodate shared bicycle lanes.