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| 320-339 | 340 | 341 | 342 | 343 | 344 | 345 | 346 | 347 | 348 | 349 | 360-379 |
| 350 | 351 | 352 | 353 | 354 | 355 | 356 | 357 | 358 | 359 | ||
| Iowa 340 (I) |
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Designated: September 1, 1936 Decommissioned: July 1, 2003 Original northern terminus: US 18, later Business US 18/unsigned IA 76, in McGregor Original southern terminus: Pikes Peak State Park Paving history: Unpaved at designation, it was paved in 1955. Replaced by: County Road X56 (IA 340 made a turn eastward into the state park before ending) Terminus photos |
| Iowa 340 (II) |
| This designation was given to the former segment of US 34 through Batavia that was bypassed on May 11, 2005. It was transferred to local jurisdictions by the end of 2006. |
| Iowa 341 |
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Designated: November 9, 1936 Decommissioned: 1988 Original northern terminus: (former) Lost Island Lake State Park Original southern terminus: US 18 south of Ruthven Paving history: Unpaved at designation, the road was paved in 1938. Replaced by: County Road N20. A 0.06-mile (or roughly 320-foot) segment between US 18 and the south city limits of Ruthven was still maintained by the state as IA 341 until July 1, 2003. Former terminus photos |
| Iowa 342 (I) |
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Designated: December 8, 1936 Decommissioned: 1980 Original northern terminus: Jamaica Original southern terminus: IA 46 (later 141) in northeastern Guthrie County Paving history: Unpaved at designation, it was paved in 1957. Replaced by: County Road P30; it was created after IA 46 (I) was relocated. |
| Iowa 342 (II) |
| This designation was given to the former segment of US 63 through Eddyville (between the north city limits and IA 137) that was bypassed on July 12, 2004. The road was transferred to the city by the end of 2005. |
| Iowa 343 |
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Designated: June 30, 1937 Decommissioned: December 6, 1980 Original northern terminus: Northboro Original southern terminus: IA 333 in southwestern Page County Paving history: Unpaved at designation, the entire road was gravel at the time of decommissioning (but has since been paved). Replaced by: County Road M44; it replaced a dislocated segment of IA 333. It was decommissioned at the same time that IA 333 was paved in Page County. |
| Iowa 344 (I) |
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Designated: July 20, 1937 Decommissioned: October 6, 1943 Original northern terminus: Lake of Three Fires State Park; it was extended to Conway on October 11, 1938 Original southern terminus: IA 3 (later IA 2) at Bedford Paving history: There were no paved segments. Replaced by: IA 49 and IA 319 (multiplexed segment near Conway) |
| Iowa 344 (II) |
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Designated: December 16, 1943 Decommissioned: 2001 Original western terminus: State fish hatchery Original eastern terminus: US 169 north of Mount Ayr Paving history: Unpaved at designation, the road was gravel at decommissioning (despite what post-1991 maps say) and remains that way today. Replaced by: Local road (210th Street) Former terminus photos |
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Iowa 346 |
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Length: 12 miles/19 kilometers Western terminus: US 218 at Nashua Eastern terminus: The US 63/18 junction south of New Hampton Western terminus photos Eastern terminus photos Counties: Chickasaw |
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| History | |
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Designated: September 14, 1937, as a spur from Nashua to Bradford
(which does not appear on many maps; it is an unincorporated town two miles east of Nashua) and the Little Brown Church. Paving history: Unpaved at designation, the entire road was paved in 1960. Major alignment changes: |
| Iowa 347 |
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Designated: November 9, 1937 Decommissioned: 1986 Original western terminus: Nebraska state line at the west edge of Carter Lake Original eastern terminus: Nebraska state line at the east edge of Carter Lake; it connected to Abbott Drive in Omaha (IA 165 in Carter Lake) about a quarter-mile east of there. Paving history: The entire road was paved at the time of designation. Replaced by: City street (Locust Street). Like IA 165, it had no numbered counterpart in Omaha. Former terminus photos For maps of the route, see Jeff Morrison's Council Bluffs/Omaha Highway Chronology page. |
| Iowa 348 |
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Designated: November 9, 1937 Decommissioned: 1967 Original northern terminus: North edge of Carter Lake Original southern terminus: IA 347 in Carter Lake Paving history: The entire road was paved at the time of designation. Replaced by: City street (9th Street). For maps of the route, see Jeff Morrison's Council Bluffs/Omaha Highway Chronology page. |
| Iowa 349 |
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Designated: January 4, 1938 Decommissioned: July 1, 2003 Original western terminus: Lake Ahquabi State Park Original eastern terminus: The US 65/69 split south of Indianola Paving history: Unpaved at designation, it was paved in 1957. Replaced by: County Road G58 Terminus photos |
| Iowa 350 |
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Designated: January 5, 1938 Decommissioned: August 20, 1958 Original northwestern terminus: US 6 northwest of Davenport Original southeastern terminus: IA 122 (I) at the "Five Points" intersection (where Division Street, Locust Street, and Hickory Grove Road meet) in Davenport Paving history: The entire road was paved at the time of designation. Replaced by: City street (Hickory Grove Road). This was formerly a segment of US 6 (and US 32 before that), and was co-signed with City US 6 for a while. For maps of the route, see the Highways of Davenport and Bettendorf page. |
| Iowa 351 |
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Designated: February 1, 1938 Decommissioned: 1981 Original western terminus: Rembrandt Original eastern terminus: US 71 in northern Buena Vista County Paving history: The entire road was paved at the time of designation. Replaced by: Local road Former terminus photos |
| Iowa 352 |
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Designated: February 1, 1938 Decommissioned: 1981 Original northern terminus: Truesdale Original southern terminus: US 71 north of Storm Lake Paving history: The entire road was paved at the time of designation. Replaced by: Local road (Buena Vista County still calls it "Highway 352" in its rural street numbering system) Former terminus photos |
| Iowa 356 (I) |
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Designated: April 27, 1938 Decommissioned: 1982 Original northern terminus: IA 304 (later IA 78) in southern Keokuk County Original southern terminus: Packwood Paving history: Unpaved at designation, the post-1948 alignment was paved in 1955. Major alignment changes: In 1948, IA 356 became a 6-mile spur from IA 1 in northern Jefferson County westward into Packwood. It was truncated at the east city limits of Packwood in 1980. Replaced by: Unnumbered gravel county roads and a portion of present-day County Road V63 (original alignment); Packwood city streets and County Road H17 (at decommissioning) Former terminus photos (1948-82 alignment) |
| Iowa 356 (II) |
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Designated: 2000 Decommissioned: July 1, 2003 This was an unsigned designation for a segment of US 71 (as pointed out by Mike Ehret) between Arnolds Park and Milford, after US 71 was realigned along a new four-lane bypass in 2000. Although no marker appeared on the state highway map, between 2001 and 2003 it appeared as a very small black smudge next to the red line that represents US 71. It is now known as Terrace Park Boulevard. |
| Iowa 359 |
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Designated: September 28, 1938 Decommissioned: July 1, 2003 Original western terminus: US 20, later unsigned IA 941, in Alden Original eastern terminus: Buckeye Paving history: Unpaved at designation, the road was paved in 1960. Replaced by: County Roads S27 (north-south segment) and D38 (southernmost mile into Buckeye) Terminus photos |