RHC Engineering

Analysis, Design, and Construction Support for Infrastructures


Constructable, Resilient, and Sustainable Civil and Structural Engineering Solutions

Projects

Washington State Department of Natural Resources
Lower High Point Bridge
Project Details... RHC Engineering provided plan, specification, and cost estimation for the 30%, 90%, 100%, and ready for bid package of the new replacement bridge. The new bridge is a 200 foot long self-weathering steel truss structure. Due to the difficult site condition, the bridge was designed to accommodate constructability requirements by splicing the truss segment and designing for field assembly.
Washington State Department of Transportation
State Route 520 West Side
Project Details... RHc Engineering supported the SR 520 program in civil and structural preliminary engineering and concept design for multiple elements in the west corridor. Work performed by RHC Engineering included civil engineering design and righ of way plan development, and structural engineering services consisting of two pedestrian bridges that are about 400 foot long curved and post-tensioned box structures, one approximately 200 foot long pedestrian tunnel, over 20 retaining walls, one HOV ramp vehicular bridge designed for future light rail compatibility, storm water structures, refining structural design criteria, and advanced seismic analysis.
Washington State Department of Transportation
Interstate 90 Peak Use Shoulder Lanes
Project Details... RHC Engineering is providing final design production including plan, specifications, and cost estimates for multiple structural engineering elements for the I-90 Peak Use Shoulder Lanes project.
City of Seattle Department of Transportation
North 41st Pedestrian Bridge
Project Details... RHC Engineering is providing seismic retrofit design for this old reinforced concrete pedestrian bridge that includes two counterweight cantilever spans and one drop-in span crossing over the State Highway 99.
King County Parks and Natural Resources Department
Coal Creek Bridge Number 5
Project Details... RHC Engineering provided inspection, load rating, as-built drawings, and concept repair design and cost estimates for this old BNSF steel plate bridge.
City of Bainbridge Island
Waterfront Bridge
Project Details... RHC Engineering provided inspection, load rating, as-built drawings, and concept replacement design and cost estimates for this old glulam girder bridge.
City of Seattle Department of Transportation
Post Avenue Bridge
Project Details... RHC Engineering provided condition survey of the adjacent historical Colman Building, performed structural analysis on impact to the building due to the bridge removal and pavement reconstruction process, and assisted submittal review during construction.
City of Seattle Department of Transportation
West Dravus Street over 15th Avenue West Bridge
Project Details... RHC Engineering provided load rating for this reinforced concrete T beam bridge.
City of Seattle Department of Transportation
Cowen Park Bridge
Project Details... RHC Engineering provided seismic vulnerability analysis and service condition load rating analysis for this historical arch bridge, using three dimensional finite element models including plate and shell elements. RHC Engineering's analysis showed consistent results with observed longitudinal cracks under the deck. RHC Engineering also identified vulneralbe elements under earthquake events.
City of Seattle Department of Transportation
Northeast 45th Street Viaduct East Approach
Project Details... RHC Engineering provided seismic vulnerability analysis for this reinforcement concrete bridge composed of different geometries and span types supported by batter piles in highly liquefiable soft soil.
City of Seattle Department of Transportation
Ship Canal Crossing Study
Project Details... RHC Engineering provided two options of pedestrian bridge approach spans landing alignment and concept bridge design.
Sound Transit North Link Construction
North Link Construction
Project Details... RHC Engineering provided seismic bracing design for electrical equipment supporting cable trays and conduits