Skip to main content

"The Stack" (I-17/US 60/I-10 Interchange in Phoenix)

Circumstance had me flying by one of the more infamous road features in Arizona; "The Stack" interchange for I-17, US 60 and I-10.


The Stack is a four-level interchange west of downtown Phoenix which was one of the last parts of I-10 to open in Arizona in 1990.  Previous to the completion of the Deck Park Tunnel and Stack the route of I-10 through downtown Phoenix was a contentious issue.  The section of I-10 through downtown Phoenix was known as the Papago Freeway.  The original plans for I-10 in downtown Phoenix called for an elevated structure that was largely despised locally.  During the 1970s local opposition to the elevated Papago Freeway was spurred by campaigns by the Arizona Republic which led to a bill that defeated the construction of the elevated freeway through downtown Phoenix.  In 1983 plans for the Deck Park Tunnel was approved which as stated above opened in 1990 with the Stack interchange.

Arizonaroads.com has a stub article which shows pamphlet information regarding the elevated Papago Freeway.

arizonaroads.com on the Papago Freeway

The route of I-17 west of downtown Phoenix was actually part of the current Arizona State Route 69 which has existed since 1938.  Originally AZ 69 took 43rd Avenue from north US 60/US 70/US 89 on Grand Avenue.  AZ 69 was moved to a new alignment on 25th Avenue by 1950 according to Arizonaroads.com, said alignment can be seen on the 1951 State Highway Map.

arizonaroads.com on AZ 69

1951 State Highway Map

AZ 69 in the Phoenix Area was built to freeway standards between Buckeye Road north past Northern Avenuesome time between 1956 and 1961 which is known as the Black Canyon Freeway can be seen on the two maps below.

1956 State Highway Map

1961 State Highway Map Phoenix Insert

By the early 1970s the southern half of AZ had become I-17.  Only a short stub of I-10 had been built past the I-17 interchange east of downtown Phoenix which can be seen on this 1971 City Insert below.

1971 State Highway Map City Insert

As I-10 was being built through downtown Phoenix it had a temporary alignment on I-17 to the location of the modern Stack.  In time US 70, US 80 and US 89 were removed from the Phoenix Area while US 60 was routed on a multiplex of I-10 to I-17.  US 60 currently multiplexes I-17 to the Stack before splitting away at Grand Avenue. 

Comments

Popular posts from this blog

The Smithtown Bull in Smithtown, New York

  Before I moved to Upstate New York as a young man, I grew up in the Long Island town of Smithtown during the 1980s and 1990s. The recognizable symbol of Smithtown is a bronze statue of a bull named Whisper, located at the junction of NY Route 25 and NY Route 25A near the bridge over the Nissequogue River. Why a bull, you may ask. The bull is a symbol of a legend related to the town's founding in 1665 by Richard "Bull" Smythe, with a modernized name of Richard Smith. It also so happens that there is a story behind the legend, one that involves ancient land right transfers and some modern day roads as well. So the story goes that Smythe made an agreement with a local Indian tribe where Smythe could keep whatever land he circled around in a day's time riding atop his trusty bull. Choosing the longest day of the year for his ride, he set out with his bull Whisper and went about riding around the borders of the Town of Smithtown. As legend has it, Smythe t

Niagara Falls

  Arguably the world's most famous waterfall, or rather a set of waterfalls, Niagara Falls may not need much of an introduction, as it is a very popular tourist attraction in both New York State and the Province of Ontario, a destination of plenty of honeymooning couples, vacationing families and college students out for a good time for a weekend. Niagara Falls is also the site of many daredevil activities over the years, such as tightrope walking and going over the falls in a barrel. It is always nice to have a bit of a refresher, of course. Niagara Falls is made up of two main waterfalls, American Falls (also known as Rainbow Falls), which is on the American side of the border and Horseshoe Falls (also known as Canadian Falls), where the border between the United States and Canada crosses. There is also a smaller waterfall on the New York side of the border, which is Bridal Veil Falls. The height of the waterfalls are impressive, with Horseshoe Falls measuring at

Erie Canal: Little Falls and Moss Island

  Little Falls, New York is a small city in the Mohawk Valley that has been shaped by the forces of water throughout its history. Nowhere in Little Falls is that more evident than at Moss Island. Representing the Industrial Age, this is home of Lock 17 the tallest lock along the Erie Canal, but there is also evidence of the Ice Age in the form of 40 foot deep glacial potholes from when there was an ancient waterfall that was even larger than Niagara Falls at this spot, once draining Glacial Lake Iroquois when other outlets (such as the St. Lawrence River) were blocked by retreating glaciers. While Little Falls does not have the amount of industry around the river and canal than it once had, checking out what Moss Island has to offer is a great way to see what the city has to offer. Visiting Moss Island allows you to experience the engineering marvel that is the Erie Canal plus the wonders of nature by taking a hike around the island and seeing the glacial potholes. A