Chew said renovating a portion of the Columbia River Highway gave him a chance to examine the work of early road builders. The highway’s original concrete curbs and gutters are still in place, although many were buried by landslides for decades. ... Uncovering the curbs was a bit like participating in an archaeological dig. Chew said the original engineers recognized the importance of installing curbs, gutters and cross-drains to carry away the profuse run-off in the Columbia River Gorge. Few other highways in the Northwest featured anything more elaborate than drainage ditches at the time the Columbia River Highway was built, Chew said. The highway’s original clay culverts are still in place under the renovated trail. Renovation has restored the bridge railing over Ruckel Creek to its full length of four arches. Once again, travelers will be able to pause at the sparkling creek. For decades, the only people who visited the rustic bridge were hikers on the nearby Ruckel Creek Trail or Gorge Trail 400.