Montana Rail Link Nos. 403 and 115 climbing the 2.2 percent mountain grade on the Harrison branch with eight covered hoppers as it approaches milepost 6 north of Harrison, Montana, on June 27, 2016. This 9.5-mile branch serves a lone elevator at Harrison with the local operating here about once a week. EMD GP9 No. 115 is at former Chicago Great Western GP7 No. 120 built in 1951 (rebuilt in 1974), while lead locomotive EMD GP35 403 is ex-Rio Grande No. 3039 built in 1965. Combined, these two units have provided locomotion for 111 years!