AT-GRADE, HINGED, & UNDERGROUND GRADE CONTROL. AT-GRADE & HINGED GRADE CONTROL STRUCTURE ON HICKAHALLA CREEK NEAR SENATOBIA, MS. Constructed in 1989 to.
Hickahala Creek Pipeline Protection Project at milepost 347.64 Tate County, Senatobia, MS (Looking across and upstream in this view) Designed jointly by.
