©Jeffrey S. Juel 2013
JUEL
2 of 39
The Chinook River is less than 6 miles from the mouth of the Columbia River; hence the reach of the Chinook River located downstream from the Highway 101 Bridge experiences a tidal range that is virtually identical to the tides on the Pacific Ocean at the mouth of the Columbia River. If the global sea level is rising, the water levels at the mouth of the Columbia River and the Chinook River are also rising.
The Chinook River and Highway 101
Highway 1011 crosses over the Chinook River on a concrete structure which was constructed prior to 1930. The river’s flow passes beneath the roadway in three concrete box culverts. Each box culvert is 8’-3” wide by 8’-0” high. There are 6.5 feet of earth fill above the box culverts and beneath the roadway.
1
Per the as-built drawings, the roadway was originally called “State Road No. 12”. For those born after 1990: “Climate Change” was originally called “Global Warming and Sea Level Rise”.