Interstate 70 is a long interstate highway in the United States. It runs from Cove Fort, Utah at Interstate 15 to a Park and Ride in Baltimore, Maryland.

Contents

1 Length 2 Major cities along the route 3 Intersections with other Interstates 4 Spur routes 5 Notes 6 Reference

Length

Miles	km	state
232	376	Utah
451	731	Colorado
424	687	Kansas
252	408	Missouri
156	253	Illinois
157	254	Indiana
225	365	Ohio
14	23	West Virginia
168	272	Pennsylvania
94	152	Maryland
2,173	3,520	Total

Major cities along the route

• Denver, Colorado
• Topeka, Kansas
• Kansas City, Missouri
• Saint Louis, Missouri
• Indianapolis, Indiana
• Columbus, Ohio
• Wheeling, West Virginia
• Hagerstown, Maryland
• Frederick, Maryland
• Baltimore, Maryland

Intersections with other Interstates

• Interstate 15 in Cove Fort, Utah
• Interstate 76 in Denver, Colorado
• Interstate 25 in Denver, Colorado
• Interstate 135 near Salina, Kansas
• Interstate 35 in Kansas City, Missouri
• Interstate 29 in Kansas City, Missouri. I-29 Begins/Ends at this downtown interchange
• Interstate 44 in Saint Louis, Missouri.
• Interstate 55 in Saint Louis, Missouri. They stay joined until Troy, Illinois.
• Interstate 64 in Saint Louis, Missouri. They stay joined until East Saint Louis, Illinois.
• Interstate 57 in Effingham, Illinois
• Interstate 74 in Indianapolis, Indiana
• Interstate 65 in Indianapolis, Indiana
• Interstate 675 between Springfield, Ohio and Dayton, Ohio
• Interstate 75 in Dayton, Ohio
• Interstate 71 in Columbus, Ohio
• Interstate 77 in Cambridge, Ohio
• Interstate 79 in Washington, Pennsylvania
• Interstate 76 in New Stanton, Pennsylvania. They stay joined until Breezewood, Pennsylvania .
• Interstate 68 in Hancock, Maryland
• Interstate 81 in Hagerstown, Maryland
• Interstate 270 in Frederick, Maryland
• Interstate 695 near Baltimore, Maryland

Spur routes

• Denver, Colorado - I-270
• Topeka, Kansas - I-470
• Kansas City, Kansas and Kansas City, Missouri - I-470, I-670
• Saint Louis, Missouri - I-170, I-270
• Columbus, Ohio - I-270, I-670
• Wheeling, West Virginia - I-470
• Spur to Washington, D.C. - I-270
• Spur from I-270 in Gaithersburg, Maryland - I-370
• Baltimore, Maryland (decommissioned, now US 40) - I-170

Notes

• When I-70 leaves the Pennsylvania Turnpike in Breezewood, Pennsylvania , there is a sign of a policeman pointing at you saying, "You! Slow Down!" You then have to drive a few blocks on US 30 before returning to I-70. This is a rare instance of a traffic light on an interstate. This could be fixed by building a direct connection between the PA Turnpike and the freeway section of I-70. However, it is argued that building a direct connection between the two would disrupt the economy in Breezewood which serves motorists passing through the town.

• I-70 was originally supposed to intersect with Interstate 95 in Baltimore. Due to opposition from environmental groups, this plan was scrapped. The intersection to I-95 and the spur route to downtown (I-170) had already been built before plans were cancelled. The signs for I-170 are now replaced with signs for US 40, and I-70 terminates in a Park and Ride. Only the exit ramp to nowhere on I-95 lets you know it was planned.

• The aforementioned I-170 ends shortly beyond the US 1 (Fulton Avenue/Monroe Street) junction. No traffic is allowed on this part of the freeway (all traffic must utilize the exit ramp back to surface streets and US 40), although streetlights and an empty sign bridge serve as proof that I-170 was to be extended beyond this point, along with vacant ramps to/from US 1. After the I-70 extension was scrapped, I-170 was to continue towards I-95 and be renamed I-595. After that plan fell through, US 40 was rerouted to the old I-170 freeway. A ghost ramp onto southbound I-95, the most obvious clue that I-70/I-595 was planned to intersect there, has been demolished.

• At Frederick, Maryland, I-70 split into two branches: I-70N, which led into Baltimore, and I-70S, which took a path into the Washington, D.C. area. I-70N is now I-70, while I-70S has been renamed I-270. The I-70S designation was also used for the current I-70 freeway in Western Pennsylvania. (There are signs along US 40 in Baltimore that still depict the I-70 freeway as I-70N. Trucks are directed onto it via I-695.)

• I-70 went through Pittsburgh, Pennsylvania at one point; its original route has been incorporated into I-376, as well as parts of I-76, I-79 and I-279.

• What had been planned as I-470 around Denver, Colorado exists in three sections: CO 470 (main), E-470 (eastern extension) and W-470 (western extension). There are no immediate plans to promote the 470s (as they are called in Denver) to Interstate status.

• The Eisenhower Tunnel on I-70 is the highest vehicular tunnel in the world, and the longest tunnel built under the Interstate program.

• In Kansas City, Missouri, I-670 cuts directly through the downtown while I-70 bypasses the taller buildings a few blocks north. Westbound I-670 is also designated Alternate I-70 making this the only "alternate" interstate in the country. The pair along with US 71, US 24, US 40, US 169, I-35 an I-29 create the downtown "alphabet" loop. Most of the Interstates in this loop are in their second mile, so all exits (no matter the which Interstate carries the road) are numbered 2 and suffixed with every letter of the alphabet except I, O and Z.

• In Saint Louis, Missouri, I-70 spawns two child routes: I-170, or the Innerbelt Expressway, and I-270, or the American Veterans Memoral Highway. In addition to the two child routes, people often confuse Missouri Route 370 to be I-370. The 12 mile (19 km) freeway gives area commuters an alternate route across the Missouri River, allowing them to avoid the congestion on I-70's Blanchette Bridge crossing of the Missouri River. Route 370 runs from I-270 at the Bridgeton/Hazelwood border (at Exit 22B) to I-70 in St. Peters (at Exit 224).

• Some observers reckon the section of Interstate 70 from Missouri to West Virginia as a kind of "Mason-Dixon Line," with the area lying south of this being considered psychographically part of the South.

• The highway gave its name to the "I-70 Killer," a serial killer who committed a string of murders within a few miles of it in several Midwestern states in the 1980s. No suspect has ever been apprehended despite the widespread publicity the murders have generated, including their being featured several times on the television show America's Most Wanted.

Reference

• 2005 Rand McNally "The Road Atlas 2005" - newest feature- interstate mileage by state