{"p":{"35577943":{"r":0,"s":1,"w":5177,"h":2925,"u":"/gcdn/-mm-/bc8f7105f4f85aa5bdee82674615fe11b7b97c3f/c=0-211-5177-3136/local/-/media/2018/06/01/WIGroup/Milwaukee/636634453984894604-MJS-locks-1-hoffman.jpg-locks.jpg"},"35577955":{"r":0,"s":2,"w":5177,"h":2925,"u":"/gcdn/-mm-/aa8569549bec2324d69146252252dab0ad9b70a5/c=0-117-5177-3042/local/-/media/2018/06/01/WIGroup/Milwaukee/636634454053393633-MJS-locks-8-hoffman.jpg-locks.jpg"}},"e":["Mark Hoffman / Milwaukee Journal Sentinel","Site safety and health officer/deckhand Dan Burger stands on the lock gates as they swing open for a northbound towboat with barges at Lock and Dam No. 7 on the Mississippi River between Onalaska and La Crescent, Minn. A University of Wisconsin-Madison study shows most of the lock-and-dam infrastructure on the Upper Mississippi is nearly 100 years old. Maintenance on it is behind schedule, with an estimated backlog of more than $1 billion.","Site safety and health officer/deckhand Dan Burger watches turbulent water pass through a roller gate on the downstream side at Lock and Dam No. 7 on the Mississippi River between Onalaska and La Crescent, Minn."],"i":["35577943","35577955","35577963","35577945","35577949","35577957","35577947","35577941","35577959","35577951","35577953","35577961"],"s":"news","ss":"news:local","t":"news:local:wisconsin","st":"news:local:wisconsin","cc":"news:local:state","n":"Photos: Mississippi River lock and dam system is critical to economy","pd":"2018-06-01T15:20:29Z"}