 SR 27 continues north along a Union Pacific rail line through Latah and Fairfield toward Rockford , where it serves as the western terminus of SR 278 and the Palouse Scenic Byway ends . The highway travels north out of the Palouse and to the Spokane Valley neighborhood of Opportunity , and widens to four lanes as Pines Road . SR 27 intersects I @-@ 90 in a diamond interchange that utilizes Indiana Avenue and Montgomery Drive as exit ramps . The highway continues north and crosses two rail lines , belonging to the Spokane International branch of Union Pacific and BNSF , before the designation ends at Trent Avenue , signed as SR 290 . 
