pdx tales
"Huge Bridge Spanning Columbia Will Link Two States", 22 August 1915.  A construction update on the eagerly awaited Interstate Bridge, with a few sketches of the work in progress.  It’s not all that exciting overall, but includes one anecdote worth passing along:

Then some of the wiles of the engineering profession came to light.  It was noticed that all of the steel in the big span was painted a bright red.  From Crown Point on the Columbia River Highway, many miles up the river, the red bridge would be visible.

"But it won’t be red when it’s finished," Mr. Cortelyou explained.  "That’s just the first coat of paint.  The second coat will be green and the third coat will be black.  You see, they agree to put on three coats of paint.  If they were all the same color the contractors could skip some spots.  But now we know when each separate coat is put on and we know that we are getting three coats of paint."
"Huge Bridge Spanning Columbia Will Link Two States", 22 August 1915. A construction update on the eagerly awaited Interstate Bridge, with a few sketches of the work in progress. It’s not all that exciting overall, but includes one anecdote worth passing along:
Then some of the wiles of the engineering profession came to light. It was noticed that all of the steel in the big span was painted a bright red. From Crown Point on the Columbia River Highway, many miles up the river, the red bridge would be visible.

"But it won’t be red when it’s finished," Mr. Cortelyou explained. "That’s just the first coat of paint. The second coat will be green and the third coat will be black. You see, they agree to put on three coats of paint. If they were all the same color the contractors could skip some spots. But now we know when each separate coat is put on and we know that we are getting three coats of paint."

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