Distance and direction of nearest 20 strong motion seismographs from earthquake. Such seismographs are of interest to structural engineers. Earthquake is 56.2 km NE of Vancouver, WA. VA Hospital Bldg. #4 (VA) 58.4 km NE of RBO - SMO Rocky Butte, OR (USGS) 59.3 km SE of Toutle River Dam, WA. (ACOE) 65.8 km NE of HAO - SMO Harrison Substation (USGS) 66.9 km NE of Portland, OR. State Univ, Bsmt. Cramer Hall (USGS) 67.0 km NE of CSO - SMO Canyon Substation (USGS) 68.8 km NE of Portland, OR. VA Hospital, Steam Plant (USGS) 69.9 km NE of Portland, OR. Clackamas Highway Bridge (ODOT) 69.9 km NE of Portland, OR. Terwilliger Interchange (ODOT) 69.9 km NE of Portland, OR. Stark St&Water Ave, Morrison Ramp (ODOT) 71.4 km SSE of Mossy Rock Dam, WA., Cowlitz R. (ACOE) 81.6 km WNW of The Dalles Dam, OR. (ACOE) 111.2 km WNW of John Day Dam, OR. (ACOE) 133.9 km S of Mud Mountain Dam, WA. (ACOE) 136.7 km SSE of McChord AFB, WA. Passenger Term. (USGS) 136.7 km N of Detroit Dam, OR. (ACOE) 137.3 km SSE of Olympia, WA. WA DNR, 1110 Washington St. (USGS) 137.6 km SSE of Tacoma, WA. VA Hospital Bldg. 81 (VA) 138.2 km SSE of Olympia, WA. DOT Hwy. Test Lab 318 State Ave. (USGS) 141.8 km SSE of Tacoma, WA. Fire Station S. 7247 S. Park Ave. (TDPW)