Originally Posted by
Scott5114
The issue with these memorial designations is that it contributes to what engineers call "message loading". Which is a fancy way of saying information passed on to the motorist. Essentially, by including this sort of sign you are diluting the importance of each sign and inducing the motorist to start tuning out other, possibly more important signs. At stream crossings, a memorial bridge sign competes for attention with feature name and possibly county line signs, which can be useful in determining one's location in the event of an incident (and also makes navigation slightly easier). These signs are also required to be placed in areas that can sometimes fall within a gaggle of other signs. I think it's currently gone due to construction, but I remember a memorial sign being wedged in between the SH-9 east and Lindsey Street interchanges on northbound I-35. There isn't a lot of room between those ramps, so the message competes for attention from important navigation information being offered about the exits.
Practically, they don't do a very good job memorializing the person because most of the time it doesn't have room to explain why the person is notable enough to have the road named after them. I know part of I-240 is named the Keith Leftwich Memorial Loop. I remember reading on a road website that he was in the state legislature. If I hadn't read it online I wouldn't have the foggiest idea who he was. There are also dozens of interchangeable memorials to state troopers, most of which I assume were killed in the line of duty, but the sign certainly doesn't say that and doesn't tell me anything about his life before his death.
Overall, I would much prefer that the legislature appropriate a small amount of money for a plaque or statue to be placed in a park or other public place. Highways are not the place to memorialize the dead, and do nothing to really bring much visibility to the person after death unless they're the most commonly-used name a highway has (like the turnpikes, which are only referred to by their names because they were, in most cases, open and named such long before numbers were assigned to them).
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