Interstate 35

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Interstate 35 Main route of the Interstate Highway System
Length:	1568.38 mi[1] (2524 km)
Formed:	1956 (completed 1982)[2]
South end:	I-35 BUS/US 83/TX 359 in Laredo, TX (to MX 85)
Major junctions:	I-10 in San Antonio, TX I-20 in Dallas-Fort Worth, TX I-30 in Dallas-Fort Worth, TX I-40 in Oklahoma City, OK I-70 in Kansas City, MO I-80 near Des Moines, IA I-90 near Albert Lea, MN I-94 in Minneapolis-St. Paul, MN
North end:	TH 61 in Duluth, MN
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Interstate 35 (abbreviated I-35) is a north–south interstate highway in the central United States. I-35 stretches from Laredo, Texas, on the U.S.-Mexico border to Duluth, Minnesota, at Minnesota Highway 61 (London Road) and 26th Avenue East.^[3] Many interstates used to have splits or spurs indicated with suffixed letters (N/S/E/W), but I-35 is the only one that still has such divisions. In two stretches, both through twin cities, the highway splits into Interstate 35E (Dallas and St. Paul) and Interstate 35W (Fort Worth and Minneapolis).

Interstate 35 does not directly connect to either international border. I-35's southern terminus is a traffic signal in Laredo, Texas, just short of the United States-Mexico border. Travelers going south can take one of two toll bridges across the Rio Grande and the Mexican border—straight ahead into Juarez-Lincoln International Bridge, or via Interstate 35 Business through downtown Laredo into Gateway to the Americas International Bridge. To the north, I-35 terminates in Duluth, Minnesota, with connections to Canada from the interstate's terminus via Minnesota Highway 61 to Grand Portage, or north to the border at International Falls by U.S. Route 53 in Duluth, but that route is more typically accessed from the south by Minnesota Highway 33 at Cloquet.

Contents 1 Route description 1.1 Texas 1.2 Oklahoma 1.3 Kansas 1.4 Missouri 1.5 Iowa 1.6 Minnesota 2 History 3 Future 4 Major intersections 5 Auxiliary routes 6 References 7 External links

[edit] Route description

Lengths
	mi	km
TX	505	813
OK	235	378
KS	234	377
MO	114	183
IA	218	351
MN	259	416
	1565	2518

[edit] Texas

Main article: Interstate 35 in Texas

See also: Interstate 35E (Texas) and Interstate 35W (Texas)

Interstate 35 northbound begins at an intersection (controlled by a stoplight) with Business Spur I-35 in Laredo, Texas, just north of the Rio Grande. Through Webb, La Salle, and Frio Counties, it has a mostly north-northeastern course, turning more northeast around Moore.^[4] It then cuts across the corners of Medina and Atascosa Counties before entering Bexar County and San Antonio.

Interstate 35 is named the Pan Am Expressway in San Antonio. There, it has brief concurrencies with both Interstate 10 and Interstate 410, and serves as the northern terminus of Interstate 37. I-35 heads northward out of the city towards the state capital, Austin.

In Austin, Interstate 35 is the Interregional Highway.^[5] Throughout Austin, elevated express lanes were constructed on either side of the original freeway. Prior to this expansion, this section included an at-grade railroad crossing, which is extremely unusual for a freeway. From Austin, I-35 goes through Round Rock, Temple, and Waco. In Waco, I-35 is the Jack Kultgen Freeway.

I-35 then heads to Hillsboro, where it splits up into I-35W and I-35E and runs through the Dallas/Fort Worth area. The official mile markers follow I-35E through Dallas—I-35W, which is 85 miles in length, carries its own mileage from Hillsboro to Denton, as though it were an x35 loop. In Dallas, I-35 is the R.L. Thornton Freeway south of I-30, which picks up the name heading east. North of I-30, it is the Stemmons Freeway.

After passing through D/FW, I-35's two forks merge in Denton. The unified interstate then continues north to Gainesville before crossing the Red River into Oklahoma.

[edit] Oklahoma

Major cities Bolded cities are officially-designated control cities for signs

Laredo, Texas San Antonio, Texas Austin, Texas Temple, Texas Waco, Texas Dallas, Texas (along Interstate 35E) Fort Worth, Texas (along Interstate 35W) Denton, Texas Norman, Oklahoma Oklahoma City, Oklahoma Wichita, Kansas Kansas City, Kansas Kansas City, Missouri Des Moines, Iowa Ames, Iowa Mason City, Iowa Albert Lea, Minnesota Owatonna, Minnesota Saint Paul, Minnesota (along Interstate 35E) Minneapolis, Minnesota (along Interstate 35W) Duluth, Minnesota

Main article: Interstate 35 in Oklahoma

In Oklahoma, I-35 runs from the Red River at the Texas border to the Kansas line near Braman, passing through many of the state's major cities, including Ardmore and the cities of the Oklahoma City Metropolitan Area such as Norman, Guthrie, Edmond, and the state capital and largest city, Oklahoma City. In Downtown Oklahoma City, I-35 has a major junction with I-40 and spurs into I-235 through the north central inner city.

[edit] Kansas

Main article: Interstate 35 in Kansas

Between the Oklahoma state line and Emporia, I-35 is part of the Kansas Turnpike. This section of interstate serves Wichita and passes through the Flint Hills area. At Emporia, I-35 branches off on its own alignment. This free section of I-35 provides access to Ottawa before entering the Kansas City Metropolitan Area, where it serves Johnson County, and Kansas City, Kansas.

[edit] Missouri

Main article: Interstate 35 in Missouri

I-35 enters Missouri near downtown Kansas City and serves as the west and north legs of the Downtown freeway loop. Along the north edge of the loop, I-35 joins with I-70. Upon leaving the loop, Interstate 29 begins, concurrent with I-35. The two interstates cross the Missouri River together on the Paseo Bridge.

After crossing the river, I-29 and I-35 split. I-35 heads north to Cameron, Missouri, and then continues northward to the Iowa state line.

[edit] Iowa

Main article: Interstate 35 in Iowa

I-35 is part of the Avenue of the Saints between Clear Lake and St. Paul, Minnesota. A four-lane link has been completed between Clear Lake and Interstate 380 in Waterloo, Iowa.

In the southern sections of the state, I-35 is parallel to U.S. Route 69, for much of its course. The highway runs mostly on a north alignment.

In Des Moines, I-35 has a 12 mile overlap with I-80. The concurrency takes place northwest of the downtown district of the city. At exit 127 of I-80, the overlap turns east and terminates at exit 137 via an interchange with Interstate 235.

North of Des Moines, I-35 is mainly parallel with US 69, traversing a vast and rural area of Iowa.^[6]

[edit] Minnesota

Main article: Interstate 35 in Minnesota

See also: Interstate 35E (Minnesota) and Interstate 35W (Minnesota)

The Minnesota section of Interstate 35 and Interstate 35W respectively are defined as legislative routes 390 and 394 in Minnesota Statutes § 161.12(2).[1] The roads are not marked with those numbers. All of I-35 in the state of Minnesota from the Iowa state line to Duluth is named the Red Bull Highway, after the 34th Infantry (Red Bull) Division.

At Medford, Minnesota, the on/off ramps lead to roundabouts rather than standard cross intersections.^[7] This is the first site in the state linked to a major highway to use roundabouts.

I-35 splits again into I-35W and I-35E in the Minneapolis/Saint Paul, Minnesota area. The mile- and exit-numbering sequence continues along I-35E. At one sharp turn in I-35W near the junction with I-94, it is advised to slow to 35 mph (55 km/h) (although many drivers are able to maintain the speed limit of 55 mph (90 km/h)). Additionally, it is not possible to go from westbound I-94 to northbound I-35W, from southbound I-35W to eastbound I-94, from eastbound I-94 to southbound I-35E, and from northbound I-35E to westbound I-94 without resorting to surface streets.

On I-35E in Minnesota between Minnesota State Highway 5 and Interstate 94, in both directions, trucks weighing more than 9,000 lbs (4,082 kg) are banned from the freeway, and the speed limit drops to 45 mph (70 km/h) but it is rarely obeyed. This section was not completed until the late 1980s (although the route was cleared and graded earlier) due to opposition from the historic Crocus Hill neighborhood which sits only a few hundred feet from the alignment. The four-lane alignment, "parkway" design was a compromise. The truck bypass for this section is signed on I-494 and I-694 to the east of Saint Paul.

The I-35 / I-535 / U.S. 53 interchange in Duluth, Minnesota is known locally as the "Can of Worms" and features a pair of left exits from I-35, a stoplight, and lane drops over the I-35 bridge. Map and aerial photo

[edit] History

Some sections of I-35 in Oklahoma City were already built in 1953, before the Interstate system was created.^[8] Through Norman, Oklahoma, the interstate opened in June 1959. In Moore, it opened in two parts: the northern half, connecting Moore to Oklahoma City, opened in January 1960. The southern half, linking it to Norman, was opened to traffic in June 1967.^[9]

I-35 through Oklahoma largely parallels U.S. Route 77. This is in large part due to efforts of the towns of Wynnewood, Paoli, and Wayne, which fought to keep I-35 as close as possible to U.S. 77. This was successful due to a threat from Governor Henry Bellmon to build a toll road rather than I-35, and legislation preventing state funds for the interstate from being spent if it were more than 1 mile from the U.S. route.^[10]

I-35 was completed in Oklahoma in 1971, when parts of the interstate running through Carter Co. and Murray Co. were opened to traffic.^[8]

The final segment of I-35 (as originally planned) to open was in north central Iowa, between Mason City and US 20 near Iowa Falls. This segment was delayed due to some controversy. Originally, I-35 was to follow the alignment of US 69 from Des Moines all the way to the Minnesota border. However, Mason City's business community lobbied for the route to be moved closer to their city. On September 1, 1965, the alignment was changed to instead parallel US 65 through northern Iowa, which brought the highway much closer to Mason City. This, however, created a long diagonal section through Wright and Franklin counties. Local farmers objected to their farms being bisected into triangular pieces, and resulting litigation delayed I-35 for several years. A November 1972 ruling rejected a lawsuit filed by the farmers, and the final segment of I-35 was allowed to proceed, eventually opening in 1975. One of the final pieces of the highway puzzle happened in Faribault, Minnesota. For approximately 25 years, Highway 35 actually went through the town and travellers had to deal with several traffic lights. In 1975, the highway went around Faribault where today a traveler actually has three exit choices for this southern Minnesota town.

[edit] Future

On September 1, 2005, MoDOT reopened the Paseo Bridge over the Missouri River in Kansas City, Missouri after completing a six-month rehabilitation project ahead of schedule. However, the rehab project is only a short-term fix; MoDOT is in the planning process of devising a six- to eight-lane crossing for the interstate, either by building a duplicate bridge to house one direction of traffic or a new bridge or bridges. The $245 million project includes $50 million in funding procured by Senator Kit Bond in the 2005 Transportation Bill. Project plans include significant updates to sections of the freeway and nearby interchanges beyond the bridge itself.

The proposed Trans-Texas Corridor toll-road project includes one proposal (TTC-35) to primarily parallel I-35 from the Mexico border up to the Oklahoma border.^[11] There are major disagreements as to what impact this parallel route would have on I-35 in terms of traffic, maintenance, and commerce.

[edit] Major intersections

• Interstate 410 in San Antonio, Texas (twice)
• Interstate 10 in San Antonio, Texas
• Interstate 37 in San Antonio, Texas
• Interstate 35 splits into I-35E and I-35W in Hillsboro, Texas
  • Interstate 20 in Dallas (I-35E) and in Fort Worth, Texas (I-35W)
  • Interstate 30 in Dallas (I-35E) and in Fort Worth, Texas (I-35W)
  • Interstate 820 in Fort Worth, Texas (I-35W only)
  • Interstate 635 in Dallas, Texas (I-35E only)
• I-35E and I-35W rejoin in Denton, Texas
• Interstate 240 in Oklahoma City, Oklahoma
• Interstate 235 in Oklahoma City, Oklahoma
• Interstate 40 in Oklahoma City, Oklahoma concurrent with I-35 for 2 miles (3 km)
• Interstate 44 in Oklahoma City, Oklahoma concurrent with I-35 for 5 miles (8 km)
• Interstate 135 and Interstate 235 in Wichita, Kansas (the Kansas Turnpike continues along I-35 east of Wichita, while I-135 passes through downtown Wichita)
• Interstate 335 in Emporia, Kansas (I-35 splits from the Kansas Turnpike at this point, and I-335 picks up the Kansas Turnpike designation)
• Interstate 435 in Lenexa, Kansas
• Interstate 635 in Kansas City, Kansas
• Interstate 670 in Kansas City, Missouri
• Interstate 70 in Kansas City, Missouri concurrent with I-34 between exits 2A and 2H
• Interstate 29 in Kansas City, Missouri concurrent with I-35 for 6 miles (10 km)
• Interstate 435 in Kansas City, Missouri
• Interstate 80 in Des Moines, Iowa. I-80 is cosigned with I-35 bypassing Downtown Des Moines (served by I-235) for 13 miles.
• Interstate 235 in Des Moines, Iowa (twice)
• Interstate 90 in Albert Lea, Minnesota
• Interstate 35 splits into I-35E and I-35W in Burnsville, Minnesota
  • Interstate 494 in Bloomington (I-35W) and Eagan, Minnesota
  • Interstate 94 in Minneapolis (I-35W) and in Saint Paul, Minnesota (I-35E concurrent with I-94 for less than a half mile)
  • Interstate 694 in New Brighton (I-35W) and Little Canada, Minnesota/Vadnais Heights, Minnesota (I-35E concurrent with I-694 for less than a half mile)
• I-35E and I-35W rejoin in Forest Lake, Minnesota
• Interstate 535 in Duluth, Minnesota

[edit] Auxiliary routes

v • d • e Auxiliary routes of Interstate 35 Texas: 635 — Oklahoma: 235 — Kansas: 135 • 235 • 335 — Kansas-Missouri: 435 • 635 — Iowa: 235 — Minnesota: 535

[edit] References

[edit] External links

• Kansas City Star's "I-35 Odyssey, A Summer Travel Series"
• Highway History - A Look at the History of the Federal Highway Administration
• Interstate 35 Through Austin

edit Main Interstate Highways (multiples of 5 in pink)
4	5	8	10	12	15	16	17	19	20	22	24	25	26	27	29	30
35	37	39	40	43	44	45	49	55	57	59	64	65	66	68	69
70	71	72	73	74	75	76 (W)		76 (E)		77	78	79	80	81	82
83	84 (W)		84 (E)		85	86 (W)		86 (E)		87	88 (W)		88 (E)		89	90
91	93	94	95	96	97	99	(238)		H-1		H-2		H-3
Unsigned			A-1		A-2		A-3		A-4		PRI-1		PRI-2		PRI-3
Lists		Primary			Main - Intrastate - Suffixed - Future - Gaps
		Auxiliary			Main - Future - Unsigned
		Other			Standards - Business - Bypassed