Robin Esterday with Long Shot Concrete Pumping uses a remote Thursday to control the boom that is pumping concrete into a retaining wall for the Animas River Trail underpass at the Emerson-Parks Bridge (32nd Street). (Jerry McBride/Durango Herald)

Robin Esterday with Long Shot Concrete Pumping uses a remote Thursday to control the boom that is pumping concrete into a retaining wall for the Animas River Trail underpass at the Emerson-Parks Bridge (32nd Street). (Jerry McBride/Durango Herald)

Robin Esterday with Long Shot Concrete Pumping uses a remote Thursday to control the boom that is pumping concrete into a retaining wall for the Animas River Trail underpass at the Emerson-Parks Bridge (32nd Street). (Jerry McBride/Durango Herald)