K-18 (Kansas highway)
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| Route information | ||||
| Maintained by KDOT | ||||
| Length: | 206 mi (332 km) | |||
| Major junctions | ||||
| West end: |
 US-24 near Bogue | |||
 US-183 in Plainville US-281 from east of Paradise to Luray K-14 in Lincoln US-81 west of Bennington K-15 in northern Dickinson County US-77 in Junction City  I-70 / US-40 from Junction City to Grandview Plaza K-177 in Manhattan | ||||
| East end: |
 K-99 south of Wamego | |||
| Location | ||||
| Counties: | Graham, Rooks, Osborne, Russell, Lincoln, Ottawa, Dickinson, Geary, Riley, Wabaunsee | |||
| Highway system | ||||
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K-18 is a primarily east–west state highway running between U.S. Route 24 (US-24) and K-99 in north central Kansas.
Route description
K-18 begins near the town of Bogue in Graham County as it branches off to the south from US-24. The highway then stairsteps to the southeast through the towns of Damar, Palco, Plainville, and Codell in Rooks County; Natoma in Osborne County; Paradise, Waldo, Luray, and Lucas in Russell County (K-18 is duplexed with US-281 for 9 miles (14 km) west of Luray); and Sylvan Grove, Lincoln, and Beverly in Lincoln County. As K-18 enters Ottawa County, it takes a due east bearing, traveling through Tescott and meeting US-81 north of Salina. The road briefly jogs to the north for around 2 miles (3.2 km) before turning east again to travel through Bennington and Talmage in Dickinson County and into Junction City in Geary County. In Junction City, K-18 meets US-77 and travels south along US-77 through the city until it hits I-70. K-18 then travels to the northeast along I-70 for eight miles (13 km) before exiting and continuing to the northeast toward Manhattan as a freeway. K-18 crosses the Kansas River at the Riley County line and travels through Ogden into Manhattan. Once traveling through Manhattan, K-18 again crosses the Kansas River and parallels the river to the south into Wabaunsee County before ending at K-99 south of Wamego.
The section of K-18 from I-70 in Grandview Plaza to K-113 in Manhattan has been rebuilt into a limited-access divided freeway, a project that began in 2012.
Junction list
| County | Location | mi | km | Destinations | Notes |
|---|---|---|---|---|---|
| Graham | Bogue | 0 | 0 | US-24 | Western terminus |
| Rooks | Plainville | 27 | 43 | US-183 | |
| Russell | Paradise | 54 | 87 | US-281 | Western end of US-281 concurrency |
| Luray | 63 | 101 | US-281 | Eastern end of US-281 concurrency | |
| Lucas | 74 | 119 |  K-232 | Northern terminus of K-232 | |
| Lincoln | Sylvan Grove | 82 | 132 |  K-181 | |
| Lincoln | 95 | 153 | K-14 | ||
| Beverly | 106 | 171 |  K-252 | Northern terminus of K-252 | |
| Ottawa | 120 | 193 |  K-106 | Southern terminus of K-106 | |
| 124 | 200 | US-81 | Interchange | ||
| Dickinson | 149 | 240 | K-15 | Western end of K-15 concurrency | |
| 153 | 246 | K-15 | Eastern end of K-15 concurrency | ||
| Geary | Junction City | 168 | 270 | US-77 | Western end of K-77 concurrency |
| Junction City | 170 | 274 | I-70 / US-40 / US-77 | I-70 exit 295; eastern end of US-77 concurrency; western end of I-70/US-40 concurrency | |
| 178 | 286 | I-70 / US-40 | I-70 exit 303; eastern end of I-70/US-40 concurrency | ||
| Riley | Ogden | 183 | 295 |  K-114 | Eastern terminus of K-114 |
| Manhattan | 189 | 304 |  K-113 | Southern terminus of K-113 | |
| Manhattan | 192 | 309 | K-177 | Western end of K-177 concurrency | |
| Manhattan | 193 | 311 | K-177 | Eastern end of K-177 concurrency | |
| Wabaunsee | 206 | 332 | K-99 | Eastern terminus | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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