Engineering Appendix
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9.0 SYSTEM M-CACES COST ESTIMATE SUMMARIES
Details of the project cost estimates are available in 20 volumes. The following sections summarize the project cost for each feature. The cost of environmental monitoring during project construction is estimated to be $1.6 million and is a project cost that is not shown in these tables.
9.1 Modified Highway 57 Alignment Cost Summary Project Feature Feature Description 100-year level of protection 85-year level of protection Floodgates Bayou Du Large 12,906,000 12,906,000 Bayou Grand Caillou 11,805,000 11,805,000 Bayou Little Caillou 12,831,000 12,831,000 Bayou Terrebonne 16,105,000 16,105,000 Bush Canal 12,957,000 12,957,000 Falgout Canal 13,303,000 13,303,000 GIWW Floodgate at Bayou Lafourche 23,844,000 23,844,000 GIWW Floodgate at Houma 42,100,000 42,100,000 Grand Bayou 13,269,000 13,269,000 Humble Canal 13,008,000 13,008,000 Bayou Pointe au Chien 12,911,000 12,911,000 Locks Houma Navigation Canal Lock 96,946,000 96,946,000 Levees Earthen Levees 256,529,000 218,905,000 Pipeline Relocations 43,164,000 43,164,000 Environmental Structures Box Culverts 32,426,000 32,426,000 Roadway Crossings Road Floodgates and Ramps 4,120,000 4,120,000 Pumping Stations Fronting Protection 3,203,000 3,203,000 Total Hurricane Protection System $621,427,000 $583,803,000 9.2 Reconnaissance Alignment Project Feature Feature Description 100-year level of protection 85-year level of protection Floodgates Bayou Petit Caillou 16,105,000 16,105,000 Bayou Terrebonne 16,105,000 16,105,000 GIWW Floodgate at Bayou Lafourche 23,844,000 23,844,000 GIWW Floodgate at Houma 42,100,000 42,100,000 Grand Bayou 13,269,000 13,269,000 Houma Navigation Canal 51,544,000 51,544,000 Humble Canal 13,008,000 13,008,000 Bayou Pointe au Chien 12,911,000 12,911,000 Levees Earthen Levees 172,129,000 158,791,000 Pipeline Relocations 44,659,000 44,659,000 Environmental Structures Box Culverts 14,551,000 14,551,000 Roadway Crossings Road Floodgates and Ramps 3,874,000 3,874,000 Pumping Stations Fronting Protection 5,960,000 5,960,000 Total Hurricane Protection System $430,059,000 $416,721,000
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