Drainage, it was built in a swamp so they need to dig out canals so the road doesn’t just sink into the mud.

Some sections of highway or rail, or rail later converted to highway were shallow lakes where they’d run a dredger through to create enough raised land for a road, directly through the lake.

Also Tennesee, stealing the “valor” of a section of a Vienam Memorial highway.

Edit

https://fox17.com/fox-17-investigates/charlie-kirk-memorial-highway-signs-to-be-moved

A sign designating part of Vietnam Veterans Boulevard as the Charlie Kirk Memorial Highway is pictured in Sumner County, Tenn. The designation is being moved to Long Hollow Pike after Vietnam veterans objected to placing it on a roadway dedicated to those who served and died in the Vietnam War.

Pike® carries the flame