infrastructure
Gross Reservoir Expansion
Projects ProjectsRecentSettlementExcavationsStructuresWalls & SlopesInfrastructureBridgesTunnelsRailVibrationDustConsolidationPiles Gross Reservoir Expansion The Project Denver Water’s Gross Reservoir Expansion Project will add 131 feet to the height of the dam, triple the volume of the reservoir, and convert the original concrete gravity structure to a concrete arch structure that can support the expanded capacity. See the video below for more…
Read More6th Street Viaduct
6th Street Viaduct GEO-Instruments worked with Skanska and Cowi during the construction of the new multi-arch 6th Street Viaduct in Los Angeles. The 3500-foot long viaduct crosses over 16 lanes of highway, 18 sets of railroad tracks, the LA river, parks, buildings, and sidestreets. The bridge deck was initially supported by formwork. After the arches…
Read MoreCoastal Cliff Erosion
Projects ProjectsRecentSettlementExcavationsStructuresWalls & SlopesInfrastructureBridgesTunnelsRailVibrationDustConsolidationPiles Coastal Cliff Erosion Threatens Road Coastal erosion threatens the safety of a road leading to an industrial site. At this location, the cliff has advanced inland to within 20 feet of the road. A 600-foot horizontal shape array, piezometers, and vibration monitors were installed to provide continuous monitoring. The cliff has…
Read MoreWaterfront Tunnel Alexandria
Waterfront Tunnel – Alexandria Virginia The Herrenknecht TBM used by AlexRenew, Alexandria Virginia’s water treatment service. The TBM was named for Hazel Johnson, one of America’s leading pioneers for environmental justice. Hazel next to the launch shaft. After launching, Hazel proceeded to excavate the 2-mile long Waterfront Tunnel at an average depth of 100 feet.…
Read MoreMSE Wall Repair
MSE Wall Repair Project OverviewKeller was called in to stabilize and repair a failed MSE wall. The wall supported a highway overpass. GEO-Instruments was contracted to monitor the wall during the repair work. InstrumentationGEO deployed 31 wireless tiltmeters and two AMTS systems with 60 prisms to monitor approximately 1400 feet of MSE wall. GeoCloud Automation…
Read MoreSeatac Utility Upgrade
Seatac Utility UpgradeProject A utility upgrade project at SeaTac’s north terminal required excavations adjacent and below the departure ramp foundation. An AMTS system was selected to monitor for any displacements induced by the excavations. Challenge For the first excavation, AMTS was positioned outside the utility room. For the second excavation, the AMTS was repositioned to…
Read MoreSisterbars for Nevada DOT
Sisterbars for Nevada DOT Nevada DOT is at work on I-15, constructing an overpass one exit south of the Las Vegas Motor Speedway. The work required pile load testing, and GEO installed sisterbars for the test.
Read MoreCrossbay Bridge Upgrade
Crossbay Bridge Upgrade ProjectScheduled upgrades for this six-lane highway bridge include replacement of fender systems and improvement of scour protection. The bridge must remain open during construction. Monitoring RequirementsThe project will require vibration monitoring and stability monitoring. The photo above shows heavy stone mattresses being placed at the base of the piers for scour protection.…
Read MoreTampa Airport
Tampa Airport Expansion ProjectTampa International Airport’s $2 billion expansion plan will allow the airport to serve a projected 34 million passengers per year, up from the current 21 million. Photo was taken from the tower. Monitoring RequirementKeller is installing foundations for three new structures at the airport. Existing structures had to be monitored for…
Read MoreCalifornia High Speed Rail
California High Speed Rail ProjectThe California High Speed Rail system will connect San Francisco to Los Angeles with trains traveling up to 220 mph on grade-separated track. (Rendering courtesy of California High Speed Rail Authority). GEO-Instruments is at work on a section of the project between Fresno and Bakersfield. The elevated tracks will be supported…
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