And it seems a little difficult to blame Obama for the slow progress of a project that began about the same time he was filing papers for his candidacy as an Illinois senator.
Yes, the project was already under way. There was $768B allocated for shovel ready projects and this was 'only' $3B. If was merely a matter of money, it seems like this lock should be done now. Or, given the $768B, replaced with a different design and the failed one cast aside.
"The corps, an agency within the federal government, decided to build Olmsted with an experimental “in the wet” construction method: Hollow sections of the dam are built on the bank, skidded down to the river, towed into position and lowered into the water, where they are filled with concrete. Traditionally, a project like this would have used a coffer dam — a small temporary dam that keeps water out of the site while construction goes on in the dry.
The “in the wet” method was supposed to save time and money and minimize delays, but it did the opposite. By the time the corps realized its folly, it was too late to alter course. The novel construction process and inadequate congressional funding, among other things, have dragged the project past the quarter-century mark."
http://www.lrl.usace.army.mil/Missions/Civil-Works/Navigatio... https://en.wikipedia.org/wiki/Olmsted_Locks_and_Dam
At $3B and 20 years in the making, maybe they're just a little more complex than a shovel.