Its probably a test marker. 8 inch thick concrete and other tech info.
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------
From: Leota Childress <lchildress@cityofmolalla.com>
Date: 10/28/20 10:40 PM (GMT-08:00)
To: Gerald Fisher <gfisher@cityofmolalla.com>
Subject: Help
Do you know what this sign means? It's on a Washington highway.
Leota Childress
City Council President
City of Molalla
503.829.6855