RR bridge (C&NW Wisconsin River) across Wisconsin River in Wausau, Marathon County, WI. WI29 (Stewart Av.) E. 1.4 miles from jct with US51 (exit 192) on the W. side of Wausau to the bridge on the S. side of the road. (7-27-07, N44 57.59 W89 38.06) Photo by Mark Comstock.