What is the highest interstate number?

The highest Interstate route number is I-990 north of Buffalo, NY. The lowest is I-4 across Florida. I-95 was the most expensive route, costing $8 billion. It also goes through the largest number of states, 16.

What is the most traveled interstate?

According to the U.S. Department of Transportation’s Federal Highway Administration (FHWA), traffic data from 2011 showed the 405 Freeway — from Interstate 5 down to Long Beach — serves an estimated 379,000 vehicles per day, making it the busiest interstate in America.

What is the shortest interstate in the United States?

1.06 miles – I-375, Michigan. The nation’s (current) shortest signed interstate.

What are the 4 states not served by an interstate?

The four state capitals not served by the interstate highway system are: Juneau, AK; Dover, DE; Jefferson City, MO; and Pierre, SD.

What is the largest interstate?

I-90: 3,020.44 miles

Interstate 90, America’s longest Interstate Highway, spans from Boston, Massachusetts, to Seattle, Washington.

What is the least traveled interstate?

Alaska State Route 11, also known as the James W. Dalton Highway, is the least traveled road in the United States.

What is the busiest road in America?

Location: Fort Lee, New Jersey. When it comes to congestion, Fort Lee takes the top prize for having the busiest highway in the USA. The average speed on the highway is just 29 miles per hour, which is the second slowest on our list.

What state has no speed limits?

As a result of its cowboy-esque lack of convention, the law was struck down, and in its place, Montana’s state legislature set the speed limit at 75 mph. In one last push toward hope, Montana increased its highway speed limit to 80 mph in 2015. It ain’t much, but it’s something.

What is the second longest interstate in the United States?

I-80. The second-longest highway within the interstate system, I-80 is 2,899 miles long. It starts in Teaneck, New Jersey and ends in San Francisco.

What interstate goes through the most states?

Interstate 95: Miami to Houlton, Maine

I-95 may not be the longest interstate, but it covers the most states in the country, spanning 1,920 miles through 15 states plus the District of Columbia. This massive road takes you from the sunny shores of Miami to the cooler town of Houlton in Maine on the US-Canada border.

Why is there no Interstate 50 or 60?

The east-west even numbers of the old U.S. highway system increase from north to south (U.S. 30 is farther north than U.S. 50, for example). The east-west even numbers of the new Interstate system decrease from north to south (I-80 is farther north than I-10). … And that is why there is no Interstate 50. Or 60.

What is the steepest interstate grade in us?

I-84 in Northeast Oregon (Emigrant Hill, just east of Pendleton) is one of the most magnificent stretches of 6% grade in the US. Multiple lane, multiple emergency truck escapes (westbound), is a great example of steep freeway construction in the U.S. Totally rebuilt in the 90’s, this is Interstate freeway at its best.

What was the first interstate?

2, Missouri awarded the nation’s first contract to build an interstate highway — what’s now I-44. That same day, Missouri awarded another contract for a stretch of what’s now I-70. Work started on Aug. 13, making Missouri the first state to actually begin construction on an interstate highway.

Which state has the longest interstate highway?

Facts and figures on the U.S. highway system

What is the difference between an interstate and a freeway?

An interstate is a highway that is part of the federal interstate system. … A highway has intersections. A freeway has no intersections (it’s free of them), it has on ramps, and is usually elevated off the ground. An interstate is a freeway with tolls, and typically goes between states (hence the “inter”).

What is the longest continuous road in the world?

Spanning some 19,000 miles, the Pan-American Highway is the longest roadway in the world.