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The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section.The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. [2]
The UK equivalent is the concrete step barrier. [citation needed] First tested in 1968 by the then Department of Highways in Ontario, Canada, the Ontario Tall Wall is a variant of the Jersey barrier. [10] Standing at 42 inches (107 cm), it is 10 inches (25 cm) taller than the standard Jersey barrier.
County roads in Ohio comprise 29,088 center line miles (46,813 km), making up 24% of the state's public roadways as of April 2015. [2] Ohio state law delegates the maintenance and designation of these county roads to the boards of commissioners and highway departments of its 88 counties . [ 3 ]
State Route 430 (SR 430, OH 430) is an east–west state highway in the northern portion of Ohio. The western terminus of State Route 430 is at an interchange with State Route 309 in Ontario. Its eastern terminus is at a T-intersection with State Route 603 just outside Mifflin.
State Route 309 (SR 309) is an east–west highway in central Ohio.Its western terminus is at its interchange with U.S. Route 30 (US 30) near Delphos, and its eastern terminus is at its interchange with US 30 in Mansfield.
The road was finished in November 1917, 5.5 metres (18 ft) wide and nearly 64 kilometres (40 mi) long, becoming the first concrete road in Ontario. [77] The highway became the favourite drive of many motorists, and it quickly became a tradition for many families to drive it every Sunday. [79]
Roughness progression for a road in Texas, US. Blue dots show the times of maintenance. The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of ...
Number Length (mi) [1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes US 6: 248.09: 399.26 US 6 in Edgerton: US 6 in Pierpont: 1931