Palmer & Baker, Inc.
Belle Chasse Tunnel (Plaquemines Parish, Louisiana)Consulting Engineers, 1956
Tunnel under the Intracoastal Waterway on Southbound LA 23
Open to traffic
Harvey Tunnel (Jefferson Parish, Louisiana)Consulting Engineers, 1957
Tunnel underneath Harvey Canal on Old Business US 90 in New Orleans
Open to four lanes of traffic with pedestrian access
Washburn Tunnel (Harris County, Texas)Engineer, 1950
Tunnel under Houston Ship Channel on Federal Road
Open to traffic
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