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  • Topic = Ramp-freeway junctions
Bay Bridge access ramp excavating for (lower level) LT Line concrete retaining wall showing unstable bank collapsing on right
Bay Bridge access ramp excavating for (lower level) LT Line concrete retaining wall showing unstable bank collapsing on right
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp excavating for (lower level) LT Line concrete retaining wall showing damage caused by slide
Bay Bridge access ramp excavating for (lower level) LT Line concrete retaining wall showing damage caused by slide
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp excavating channel for (lower level) LT Line concrete retaining wall
Bay Bridge access ramp excavating channel for (lower level) LT Line concrete retaining wall
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge off ramp saturated zone (perennial spring) contact with earth and rock strata
Bay Bridge off ramp saturated zone (perennial spring) contact with earth and rock strata
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge off ramp progress excavating footing for concrete retaining wall on LT Line
Bay Bridge off ramp progress excavating footing for concrete retaining wall on LT Line
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge off ramp construction of footing for concrete retaining wall
Bay Bridge off ramp construction of footing for concrete retaining wall
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp excavation of (lower level) LT Line concrete retaining wall
Bay Bridge access ramp excavation of (lower level) LT Line concrete retaining wall
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction showing pile driver rig installing steel "H" beam piling for channel wall support
Bay Bridge access ramp construction showing pile driver rig installing steel "H" beam piling for channel wall support
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp excavation on channel cut for LT line concrete retaining wall
Bay Bridge access ramp excavation on channel cut for LT line concrete retaining wall
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction showing pile driver rig installing steel "H" beam piling for channel wall support
Bay Bridge access ramp construction showing pile driver rig installing steel "H" beam piling for channel wall support
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction installation of 3rd row of Steel "H" beams for piling on channel wall support
Bay Bridge access ramp construction installation of 3rd row of Steel "H" beams for piling on channel wall support
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction workers pouring concrete for lower level retaining wall footing
Bay Bridge access ramp construction workers pouring concrete for lower level retaining wall footing
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction excavation for footing of lower concrete retaining wall
Bay Bridge access ramp construction excavation for footing of lower concrete retaining wall
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction workers pouring concrete for lower level retaining wall footing
Bay Bridge access ramp construction workers pouring concrete for lower level retaining wall footing
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction on upper and lower level concrete retaining walls
Bay Bridge access ramp construction on upper and lower level concrete retaining walls
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction showing beginning of upper and lower concrete retaining walls
Bay Bridge access ramp construction showing beginning of upper and lower concrete retaining walls
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction showing upper level and (lower level) LT Line concrete retaining walls
Bay Bridge access ramp construction showing upper level and (lower level) LT Line concrete retaining walls
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction showing upper level and (lower level) LT Line concrete retaining walls
Bay Bridge access ramp construction showing upper level and (lower level) LT Line concrete retaining walls
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction placing steel and concrete retaining wall
Bay Bridge access ramp construction placing steel and concrete retaining wall
Photographer
United States Naval Station Treasure Island Photographs
Bay Bridge access ramp construction showing upper level ramp approach to Bent #7
Bay Bridge access ramp construction showing upper level ramp approach to Bent #7
Photographer
United States Naval Station Treasure Island Photographs