Graham Rd. near the former site of the Trojan nuclear power plant probably can’t be considered long or winding. The rail line it crosses could be however. Portland & Western’s Astoria District winds its way along the Willamette and Columbia rivers for 99 miles from Willbridge to Astoria. There are certainly places where it is straight but most of the time is curving one way or another to follow the geography laid out by the rivers.
Most of the line was constructed between 1895 and 1898 and modified little since. I imagine since this was always a branch line (except for its brief time as the Northern Pacific’s mainline between Portland and Seattle) there was little incentive to change anything significantly. With the recent tie and rail improvements made by the P&W and the State of Oregon it looks like the ‘A-line’ will continue to be the long and winding road along the lower Columbia for some time.
