Iron bridge (Spoon River Rest Area) across branch Spoon River E. of Knoxville, Elba Township, Knox County, IL. I74 E. 8.4 miles from jct with US150 just E. of Knoxville to the rest stop at mile marker 62. Bridge is at the E. end of the rest stop on the S. side. (10-23-08, N40 52.639 W90 05.557) Photo by Mark Comstock.