WICHITA, Kan. (AP) — Union Pacific plans to spend about $120 million this year in Kansas to improve the state's rail infrastructure. The company announced in a news release Tuesday that it will spend almost $110 million to maintain railroad track. Other expenditures include $2.2 million to improve its signal systems and $7.5 million to maintain or replace bridges in the state. Among the projects is the replacement and repair of about 25 miles of rail between Whiteside and Pratt. Also planned is replacement of 15 miles of rail near McPherson. The company also plans to make improvements to surfaces at numerous road crossings in the state. The Kansas work is part of $4.2 billion Union Pacific says it plans to invest across its network this year.