Council Bluffs/Omaha: Highway Chronology

NOTE: IA 2 and 7 may have continued along Broadway into Nebraska along with IA 6
End 8 and 104: Main at Broadway

November 3, 1924: IA 12 truncated at Missouri Valley; IA 104 truncated to IA 8
April 5, 1926: IA 104 decommissioned
October 16, 1926: US 30 replaces IA 6; US 32 replaces IA 2 and part of NE 16; US 75 replaces IA 12 north of Council Bluffs, IA 7 to bridge, and NE 5 south of Douglas St; US 34 replaces IA 8
October 30, 1928: IA 86 decommissioned

NOTE: The above map shows the ends of US 32, US 34, and US 38.

May 27, 1931: IA 241 designated along former IA 86 route, then east to US 34
June 24, 1931: One month after 241 is designated, IA 192 replaces it
November 1931: US 275 commissioned; overlaps with 34 north of Glenwood
December 1931: US 6 replaces US 32 and 38; US 30 becomes US 30S
1932: IA 192 truncated to west of US 34/275; later to Lake Manawa
Also in 1932: IA 73 extended northward to South Sioux City

NOTE: Route descriptions in Highway Commission minutes on February 5, 1936, show routes using Pearl instead of Main, half a block west. It is unknown when this began and maps are unclear on how long it lasted.
US 6, W-E: Saddle Creek Rd, Dodge St, 30th St, Douglas St, Douglas St bridge, Broadway, Oak St, Pierce St, McPherson Ave
US 75, N-S: North Broadway, Broadway, Douglas St bridge, Douglas St, 24th St
IA 192, N-S: Main St (from 9th Ave), 16th Ave, 7th St, 25th Ave, unknown road (Main again?) to Lake Manawa
End 34 and 275: Main at Broadway
End 7: Broadway at Main

December 1, 1934: US 30S becomes US 30A
Also in 1934: Dodge bridge over Saddle Creek built
1934 or 1935: US 75 moves to 13th St south of Douglas
1935: Discussion about the Iowa-Nebraska border involves potential relinquishment of Carter Lake (which would, inevitably, be annexed by Omaha). Such action never happens. Border is mostly settled along channel of Missouri River as of mid-20th century, except Carter Lake, in Supreme Court case Nebraska v. Iowa, 406 US 117 (1972). (Sources: "Iowans may move over into Omaha without moving," AP article in Waterloo Daily Courier, March 4, 1935; findlaw.com)
September 1, 1935: US 34 taken out of Council Bluffs, rerouted to Plattsmouth NE
January 18, 1936: South Omaha Bridge opens (toll until September 25, 1947)
December 22, 1936: IA 100 extended to US 275
November 9, 1937: IA 347 and 348 commissioned
Between 1937 and 1940: NE 8's east end moves east near downtown, or state line
1938: Douglas Street bridge renamed Ak-Sar-Ben Bridge (toll until September 25, 1947)
January 18, 1939: IA 367 designated, connecting US 275 to South Omaha Bridge
February 1, 1939: IA/NE 92 commissioned (change approved November 22, 1938)
July 22, 1939: IA 64 replaces IA 7, ends at US 6
1939: US 275 extended through Omaha to O'Neill, creating wrong-way multiplex with US 75 on Broadway
1939 or 1940: US 6 moved onto Dodge between 204th St (NE 31) and Saddle Creek; NE 38 commissioned along Center St/Rd (probably; it may have replaced part of NE 16 left behind when 92 superseded most of it)

Iowa into Nebraska: Westbound 6, 30A, and 92; southbound 75; northbound 275

US 6, W-E: Dodge St, 30th St, Douglas St, Ak-Sar-Ben bridge, Broadway, Oak St, Pierce St, McPherson Ave
US 75, N-S: North Broadway, Broadway, Ak-Sar-Ben bridge, Douglas St, 13th St
IA 192, N-S: Main St (from 9th Ave), 16th Ave, 7th St, 25th Ave, unknown road (Main again?) to Lake Manawa

1941: US 275 replaces IA 367, uses South Omaha Bridge/L St; IA 375 on old route
Unknown (likely 1950s): Omaha sets up system of one-ways downtown
1954: Northernmost part of IA 375 moves one block east, Main to 4th
1957: IA 165 designated
ca. 1957: NE 38 heads northwest from Saddle Creek/Dodge, replacing part of NE 8; NE 64 extended east to Omaha
June 23, 1958: IA 92 replaces 100 ("No. 92 Passes Thru Griswold," Griswold American, June 25)
November 26, 1958: I-29 opens between US 30 and 16th St; US 75 moved onto it
1959: I-80 built from Lincoln to I-680/80 split in southwest Omaha
December 16, 1959: IA 92 moves off 375 and 6 to cross into Omaha with US 275
1960-62: I-80 built between Lincoln and I-480 (ending at 24th St); I-480 built between I-80 and Dodge St; I-680 built between I-80 and US 6 (not shown)

NOTE: Some maps indicate a four-lane US 73/75 (13th Street) running south from Omaha to the Platte River was open as early as 1958. This could well be the case, and in fact may extend back to WWII or the late 1940s. (Three words: Strategic Air Command.)

US 6, W-E: Dodge St, Dodge St (WB)/Douglas St (EB), Ak-Sar-Ben bridge, Broadway, Oak St, Pierce St, McPherson Ave
US 75, N-S: I-29, 16th St, Broadway, Ak-Sar-Ben bridge, Douglas St (NB)/Dodge St (SB), 13th St (NB)/14th St (SB), 13th St
US 73 NB: 13th St, Webster St (or Burt), 15th St, Cuming St, 30th St
US 73 SB: 30th St, Burt St, 16th St, Chicago St, 14th St, Leavenworth St, 13th St
IA 192, N-S: 4th St (from 9th Ave), 16th Ave, 7th St and later South Expressway to Lake Manawa
Ends of 375: Main St at Broadway; South Ave at South Omaha Bridge (Wright) Rd
Note: The connection between IA 64 and NE 64 was probably never made.

Mid-1960s: One-way alignment of 73 north of Dodge changes slightly; I-680 built between US 6 and NE 133 (not shown)
November 21, 1966: I-480 bridge opens; US 6/75 moved onto it
1967: IA 347 decommissioned
October 25, 1968: I-29 opens between 16th St and 9th Ave (south of I-480); US 75 moved onto I-29 between 16th St and I-480
December 3, 1968: US 6 realigned west of Broadway for 7.5 miles ("Open New Highway 6 in Bluffs," Council Bluffs Nonpareil, Dec. 3)
January 1, 1969: IA 64 becomes part of IA 191; I-80 opens between Madison Ave and US 6
1969: US 30A decommissioned (lasting long enough to get on I-29 and I-480's BGSs); IA 183 takes 30A's route north of US 6
December 22, 1969: I-80 opens between I-680 and IA 192; I-29 opens between IA 192 and IA 370, changing intersection of 92/275 near Iowa School for the Deaf
1969, 1970, or 1971: I-480 completed in Omaha (Dodge to 10th); freeway stub built south from I-80 to vicinity of L St
November 1, 1970: I-29/80 duplex opens (west I-29 junction to IA 192) plus I-29 just north of the west junction to 23rd Ave
1971: IA 375 decommissioned; IA 192 extended along part of it to Broadway
November 10, 1971: I-29 opens between 9th Ave and 23rd Ave, last segment in area
December 15, 1972: I-80 bridge into Nebraska opens, completing I-80 in Iowa
1972 or 1973: I-680 built between NE 133 and Missouri River (not shown)

1975: IA 192 truncated to I-80
1976: NE 38 moves off Saddle Creek onto Center St to I-480
1977: I-680 opens between Missouri River and I-29 (not shown)
Between 1978 and 1980: New freeway built from I-480 north to Lake St, called I-580; freeway south of I-80 extended south to Q St
1977: IA 192 temporarily decommissioned?? It doesn't appear on the 1978 state map or 1978 Pottawattamie County map
April 21, 1979: Last toll taken on eastbound I-680 Mormon Bridge
1980: IA 192 signed between I-29 and I-80 along 16th St, Broadway (US 6), 6th St (NB)/7th St (SB), and South Expressway.
1981: Mile (or so) of IA 183 and IA 191 inside Council Bluffs each turned over to city

Between 1981 and 1986: US 6 realigned between 7th St and North Broadway, slightly north of old road in downtown; south Omaha freeway finished between Q St and Chandler Rd, just south of Douglas/Sarpy county line
1983: I-580 dropped as designation of freeway in Omaha, will later be part of 75
1984: US 75 moves into Nebraska, replacing US 73 north of Omaha
1986: IA 347 decommissioned
1998: US 75 freeway extended north (finally!) from Lake St to new Sorenson Parkway and Storz Expressway; NE 64's end moves slightly east to freeway
2000: US 75 freeway (Kennedy Freeway) opens in Bellevue, paralleling old road (Fort Crook Road) half a mile to the west

Late 2002: Southwest end of IA 165 shifted slightly for Abbott Drive reconstruction project
January 1, 2003: NE 38 decommissioned ("End of the historic road as Nebraska Highway 38 goes off the map," Omaha World-Herald, Jan. 10)
July 1, 2003: IA 191 and IA 183 are severely truncated, leaving area; US 275 put on I-29 between IA 92 and US 34