R.P. Farnsworth & Co.
of New Orleans, Louisiana
Belle Chasse Tunnel
(Plaquemines Parish, Louisiana)Contractor, 1956Tunnel under the Intracoastal Waterway on Southbound LA 23Open to traffic
(Jefferson Parish, Louisiana)Contractor, 1957Tunnel underneath Harvey Canal on Old Business US 90 in New OrleansOpen to four lanes of traffic with pedestrian access