The flex lane corridor of US Route 23 in Michigan exists on the freeway segment between Ann Arbor and Brighton. The flex lanes serve as an experimental temporary third lane only during commute hours. The lanes are intended to mitigate the numerous safety issues the freeway segment is associated with. The initial flex lanes opened between Ann Arbor and Whitmore Lake in 2017. Construction broke ground on a corridor extension north to Brighton in 2023. Part 1; the history of the US Route 23 flex lanes between Ann Arbor and Brighton The US Route 23 freeway corridor between Ann Arbor and Whitmore Lake was completed during 1957. The corridor was expanded north to Interstate 96 in Brighton by 1960. Despite being over sixty years old the freeway between Ann Arbor and Brighton has seen little expansion but has had an increasing number of commuters use it. This has led to safety and congestion issues which have been only worsening with time. D...
Hawaii County Route 182 is a 3.6-mile highway located on the Big Island. The corridor begins at Hawaii County Route 180 (Mamalahoa Highway) at Holualoa and follows Hualalai Road west to Alii Drive (Hawaii County Route 187) in Kailua-Kona. Hawaii County Route 182 includes a brief multiplex of Hawaii Route 11 and was likely added to the Federal Aid-System on the Big Island during the late 1970s. Part 1; the history of Hawaii County Route 182 Hualalai Road has been present serving Kailua-Kona and Holualoa for decades prior to the expansion of the state highway system to the Big Island in 1955. The corridor is shown to be a major local roadway on the 1959 Gousha Highway map of Hawaii . According to Oscar Voss's hawaiihighways.com Hualalai Road wasn't added to the Federal Aid-System on the Big Island during 1960s but rather at a later time. The corridor was likely added during 1976 or sometime after. This is likely due to the Hawaii Rout...