3D Scanning in Antioch, CA

Antioch sits where the San Joaquin River meets the Delta, and that position shapes what gets scanned here. The Antioch Bridge carries State Route 160 across the river toward Sherman Island, the levee systems of the surrounding reclamation districts hold back water on ground that is often below the tide, and the eBART extension brought new rail infrastructure down the State Route 4 median to the Hillcrest Avenue station in 2018. Structures like these are why we run a survey control network before we run a scanner. Tied to published control and a recognized vertical datum, a scan supports vertical and horizontal clearance surveys, structural as-builts of girders, bents, abutments, and wingwalls, levee crown and slope profiles, and repeat epochs that quantify settlement or movement between visits rather than describing it.

The building side of Antioch is equally varied. Industrial and process facilities along the Wilbur Avenue corridor and the river frontage need tank, pipe-rack, and structural documentation that is dangerous to gather with a tape and a ladder. The older commercial blocks of the riverfront downtown are drawing renovation and adaptive-reuse work on masonry and timber buildings with no usable drawings. Institutional owners, water and wastewater operators, and school districts need existing-conditions models before they design a modernization. In each case one visit produces the same asset: millions of survey-grade points, registered together, from which we cut whatever the design team needs later.

Because low ground along the Delta margin falls within areas mapped under the Seismic Hazards Mapping Act, scan-derived elevation and slab data is often the most useful thing a geotechnical reviewer receives. Deliverables are registered E57 or RCP point clouds, DWG/DXF scan-to-CAD drawings, and Revit models. For structures work see infrastructure scanning and deformation monitoring; for buildings, our Antioch as-built surveys.