Reviewing the Iowa chapter in my forthcoming Lincoln Highway Companion, I often compare my maps to extreme close-ups of the LHA’s excellent CD-based maps based on the DeLorme system. My book has a photo from just east of Grand Junction, Iowa, where 4 bridges cross Beaver Creek. However, I noticed the LHA maps only show 3 roads/bridges there, despite a notation of “4 Bridges.”
So I checked with Bob and Joyce Ausberger, who made the ultimate effort to save the original tiny concrete bridge there by purchasing it and the land around it! They confirmed that the original LH needs to be shown crossing it. “There is still the remains of the road grade. You need to be standing at the right location to see it. It was never more than a graded dirt road, but it’s there. Right now it is covered with brome grass so it probably wouldn’t show up on the DeLorme maps.”
You can see all 4 in the Google Maps aerial view — from top: original LH, railroad, old LH, and US 30. (And note how lucky we are – the aerial views go low-res just a few yards to the west!)
On a sample of the DeLorme map, I’ve drawn in by hand a bright blue line where the original route should be, and a black circle where the bridge is. I’m guessing at where it joins the revised LH/222nd St on the west end but maybe readers can help confirm that.