One lane of I-90 was blocked for several hours yesterday afternoon after a semi-truck crashed, spilling diesel fuel.  51-year old Mirsad Ibrahimovic of Iowa was driving a Freightliner truck and trailer westbound on the interstate just before 3 PM.  Ibrahimovic struck a guard rail and a bridge rail near the Salem exit.  He was hauling weed killer and other lawn care products.  Ibrahimovic was not injured in the crash.  Charges are pending.