other infrastructure All the bridges over the St. Johns River north of the canal are high enough for ships or have movable sections. High bridges were built over the canal, as well as several over the Ocklawaha River where it was not widened to the canal. The following are the major roads, railroads, and locks and dams cross the path of the canal: Buckman Lock (formerly St. Johns Lock) SR 19 (high bridge) George Kirkpatrick Dam (formerly Rodman Dam), south of the canal on the Ocklawaha River, forming Rodman Reservoir along the canal Eureka Lock & Dam (unfinished) CR 316 (high bridge) SR 40, Bert Dosh Memorial Bridge (high bridge) CR 314 (no bridge) SR 35 (no bridge) SR 464 (no bridge) Florida Northern Railroad (no bridge) CSX S-Line (no bridge) US 27-301-441 (SR 25/SR 500) (no bridge, but several unused supports in the median) CR 475 (no bridge) I-75 (SR 93) (no bridge; recently built land bridge over I-75 for trail users) SW 49th Avenue (no bridge; recently built underpass for trail users) CR 484 (no bridge) SR 200 (no bridge) CSX line (low bridge over the existing Withlacoochee River) US 41 (SR 45), Brittan Alexander Bridge (low bridge over the existing Withlacoochee River) Inglis Lock (Inglis Dam is south of the canal on the Withlacoochee River, forming Lake Rousseau along the canal) US 19-98 (SR 55), Trooper Ronald Gordon Smith Memorial Bridge (Twin bridges that replaced a much higher bridge in 2010) Between Lake Rousseau and the Ocklawaha River, discontinuous unwatered excavations mark the canal's planned path, along with different vegetation patterns on the land acquired for the project (as seen from the air). A lock and dam was also built south of the canal on the Ocklawaha River near CR 464C in Marion County. Project timeline May 1933 - Canal Authority of the State of Florida was created to construct and maintain a deep-water ship canal across Florida. 1935–1936 - Construction of a ship canal began under the Emergency Relief Appropriations Act of 1935, but work was suspended when Federal funds were depleted. July 1942 - Congress authorized construction of the Cross Florida Barge Canal. February 1964 - The U.S. Army Corps of Engineers began construction of the Cross Florida Barge Canal. 1969 - The Environmental Defense Fund and others filed suit in the U.S. District Court for the District of Columbia seeking temporary and permanent injunction