I-75 and US 23, which are coterminus within the county, are the major north-south route.
People from Livingston County commute to all four of these cities, using the three major expressways which pass through the county: I-96, US 23, and M-59.
U.S. Route 66 | U.S. Route 1 | U.S. Route 6 | U.S. Route 101 | Route 66 | U.S. Route 30 | New Jersey Route 4 | European route E65 | U.S. Route 40 | California State Route 1 | U.S. Route 1 in Maine | Pennsylvania Route 309 | European route E18 | U.S. Route 23 | European route E4 | U.S. Route 9 in New York | U.S. Route 11 | Pennsylvania Route 82 | European route E70 | U.S. Route 90 | U.S. Route 75 | U.S. Route 61 | U.S. Route 60 | Pennsylvania Route 73 | New York State Route 32 | European route E55 | U.S. Route 80 | U.S. Route 71 | U.S. Route 51 | U.S. Route 22 |
Ashland's other access points are through Catlettsburg via U.S. Route 23, and Coalton via a two-lane section of US 60.
The bridge, named after author and Greenup County, Kentucky native Jesse Stuart, was completed in 1984 and carries Kentucky Route 10 (unsigned) from the AA Highway/U.S. Route 23 intersection to the bridge itself, where it becomes State Route 253 to U.S. Route 52.
The Laurel Creek Gorge Bridge is a continuous steel Plate girder bridge that spans Laurel Creek on Interstate 26/U.S. Route 19/U.S. Route 23 between Asheville, North Carolina and Johnson City, Tennessee.
When it was first designated in 1937, State Route 665 was routed along its present alignment between the junction of U.S. Route 42, State Route 38, State Route 56 and State Route 142 in London and U.S. Route 23 near Lockbourne.
The limited-access highway in Pike County would begin at U.S. Route 23 south of Pikeville and proceed northeast and north of Fishtrap Lake to Kimper.
U.S. Route 23 (US 23) is a part of the U.S. Highway System that runs from Jacksonville, Florida to Mackinaw City, Michigan.