Regional registry
Arkansas
3 documented locations. Others may exist; funding to check ran out.
Bollard Demonstration Grounds
Forty-three roadside bollards in orderly rows fill a fenced gravel lot on the north edge of Mercer Switch just off State Route 214, where the Regional Bollard Demonstration Grounds display concrete, recycled-plastic, reflective steel, one timber pilot model, and a short-lived hexagonal type the county reportedly stopped ordering in 1998. A hand-painted sign attributes the site to the Mid-Ark Corridor Safety Resource Committee, though maintenance now appears to fall to the county road department and whichever civic volunteer group is rotating litter pickup that month. The hook is not the bollards themselves so much as the persistence of the place. Several pieces still carry small metal tags listing installation dates, impact ratings, and supplier names, suggesting the lot began as a procurement comparison yard rather than a public attraction. One interpretive panel is missing, and the locked brochure box was empty on the last reported visit.
Median End-Treatment Garden
What a passerby first notices at the north edge of Creswell Spur, just off State Route 41 beside a low brick district highways office, is a landscaped loop displaying retired and current crash-cushion noses with modest interpretive signs, known as the Regional Median End-Treatment Garden. It is reportedly maintained by the Central Foothills Transportation Safety Outreach Committee, which appears to mow around each unit individually. The hook, according to the roadside panel, is that three of the end treatments were arranged in 1998 to demonstrate evolving standards to county judges and school bus supervisors during a one-day field seminar. A locked brochure box was present during the last report, but no brochure was visible.
Regional Expansion Joint Demonstration Bridge
Outside Lemcaster, on a frontage parcel between an active farm road and a retired state-service spur, the Regional Expansion Joint Demonstration Bridge carries no traffic but remains striped, signed, and apparently inspected. The short concrete span was reportedly assembled by the Upper Four Counties Transportation Education Council to display seven different bridge-joint systems in one place for county road supervisors, school groups, and visiting procurement committees. The hook detail is audible before it is visible: locals say each lane produces a different sequence of clacks when crossed slowly, and a weathered panel near the rail still encourages visitors to "compare tonal response at 15 MPH." The gate was open on a Tuesday afternoon, though the adjacent parking area had been coned off for reasons not explained on site.