Roads & Bridges   ..........Our bridge and highway designs encompass local rural roads to complex urban interchanges, demonstrating our depth and range.   Roads & Bridges   ..........ROUTE 17/85 INTERCHANGE Prepared PS&E for mainline and ramp segments of this major freeway interchange between Route 17 and the new State Route 85 freeway. Left turn movements are handled by a pair of direct connector ramps and a pair of loops. The direct connector ramps are between the levels of the two freeways. Designed the Route 85 roadway and the stormwater pumping station. The station was necessary because Route 85 is approximately 15 feet below the bed of Los Gatos Creek, the lowest stormwater outfall point. The pumping station's installed capacity is 350 HP, discharging up to 20,500 gallons per minute.   I-80 RICHMOND PARKWAY INTERCHANGE AND I-80 WIDENING   ..........Design of a complete new interchange and highway widening of Interstate Highway 80 between the Hilltop Drive and Appian Way Interchanges, Richmond, CA.   ..........The overcrossing structure is a seven-lane, three span continuous cast-in-place, prestressed concrete box girder which also has mid-overcrossing touchdown ramps (i.e., westbound on and eastbound off ramps) to the widened I-80 HOV lanes. The I-80 widening consists of widening the existing six lane freeway to eight lanes, including one HOV lane in each direction, plus 10-foot outside shoulders and 14-foot inside shoulder/HOV enforcement lanes.   ..........The project includes a park and ride lot, ramp metering provisions, lighting, signing, striping, and signals. There is extensive landscaping along the non-interchange portions of Richmond Parkway. (City of Richmond Department of Public Works/Caltrans).   Flood Control   ..........A-N West has undertaken hydrologic and hydraulic studies and designs for numerous pump stations as well as improvements to hundreds of creeks, rivers, and streams.   San Clemente Creek Pump Station   ..........Designed a 69,000-gpm stormwater pump station, approximately 800 linear feet of 54-inch diameter discharge pipe, dissipator structure, automatic tide gate and structure, and stand-by generator and building. Additional work included preparation of hydrology study and quantity/cost estimate.   Lakeshore and Grand Avenue Watershed Studies (Oakland, CA)   ..........This project concentrated on the 1190-acre Lakeshore Avenue watershed and the 710-acre Grand Avenue watershed, which both drain into the north end of Lake Merritt. Both watersheds are served by underground stormdrain systems built a number of years ago, and the lower reaches of both systems pass through neighborhood business districts. The project's goals were to study the watershed area and the capacity of Lake Merritt and to recommend system improvements to reduce frequency of flooding during periods of high flow. Performed field investigations to inventory existing stormdrain facilities and to update system mapping, reviewed historical flood events, performed hydraulic calculations to determine each system's capacity with respect to return period, and recommended improvements to reduce frequency of flooding. (Alameda County Public Works Agency).   High Canal Pump Station   ..........Designed a stormwater pump station located at end of High Canal at Lucky Drive. The pump station was designed to provide protection for low-lying areas subject to flooding from upstream runoff during periods of coincidental high tide. The station was designed to discharge 83,750 gpm using four submersible electrically-driven propeller pumps. An energy dissipater outlet was designed to minimize scour of downstream Lucky Creek. We developed the hydrology and storm water flows for approximately 600 acres of tributary watersheds using HEC-1. We also conducted a HEC-2 backwater analysis to verify upstream flood protection.   Lucky Drive Flood Control/Drainage Project   ..........Designed approximately 2,500 linear feet of earth levee and masonry flood wall, two stormwater pump stations, automatic tide gate and structure, stand-by generator with building, and improvements of existing drainage system. Additional work included preparation of hydrology study and quantity/cost estimates.   Site Development   ..........Many of our designs have been for sites where the community wished to preserve the natural character of their neighborhood and to emphasize the beauty of its waterway. Guadalupe River Flood Control/Park Project (San Jose, CA).   ..........Provided conceptual and final design for 2.3 miles of this significant flood control/river park project through downtown San Jose. We designed riverside terraces and channels and erosion protection at bridge structures, riverbanks and the channel invert. The park is designed for year-round access to the water, regardless of water level. Performed control and topographic surveys, and prepared base maps from combination of ground surveys and photogrammetry.