Today our “primary highways” series brings us to the state of North Carolina.
Crossing from Virginia into North Carolina on I-95 (which I most recently did in 2009 under cover of darkness), one gets the sense that “now we are really in the South.” It’s perhaps a combination of the vegetation, terrain, but especially the name “Carolina”.

That particular trip involved traveling southward along I-95, and then later returning to the state near the coast on US 17. The contrast between the different corridors was quite apparent. The US 17 corridor, when when it was not exactly on the coast, was surrounded by shorter vegetation in a lighter shade of green. As we got closer to Wilmington and I-140, it was hard to tell whether we were in a quiet coastal region or in an outer suburb with lots of highways but relatively little visible development. From 17/I-140, we turned onto I-40 and headed north. But if I the time for a proper visit, I would have continued up US 17 back towards the Outer Banks.
One can talk a particularly scenic trip through the Outer Banks on North Carolina Highway 12, which stitches together many of the barrier islands via bridges, causeways and ferries with fantastic views. The road goes through the Hatteras National Seashore. It also goes through Kitty Hawk, often credit as the location of the Wright Brothers’ first flight, though it was actually in nearby Kill Devil Hills. One of the most prominent landmarks, in addition to the continuous stretches of beach, is the Hatteras Lighthouse.

The Outer Banks are part of a beautiful and quite fragile environment, and one that is quite prone to being hit by hurricanes and subject to storm surges and flooding. Consider this breach of the islands and the highway that occurred in 2011.

[Photo from NCDOT on flickr.]
If we leave the Outer Banks and head northward and eastward on I-40, we eventually come to the Raleigh, the state capital and one of the main cities of the Research Triangle together with Durham and Chapel Hill. The Research Triangle is home many technology companies (both in the Research Triangle Park and beyond), and is anchored by Duke University, University of North Carolina and North Carolina State University. These schools are also known for their basketball teams. Raleigh is a much larger city and the center of state government, and sports both an inner and outer beltway, I-440 and I-540 respectively, though the latter is only partially built. Durham, to the north and west, looks from images as a grittier city that might attract my interest, especially with the old tobacco-factory buildings that have been converted to mixed use.

[GFDL or CC-BY-SA-3.0-2.5-2.0-1.0], via Wikimedia Commons]
It is also home to a large and vibrant African American community with a long history of successful businesses and a neighborhood once dubbed “The Black Wall Street.” It was also a center for early Civil Rights activity including some of the earliest “sit-ins.” Already in decline by the late 1960s, the neighborhood appears to have been torn apart by the construction of the Durham Freeway (NC 147) through the center of the city. It is a familiar sounding story (like the Cross Bronx Expressway in New York).
From Durham, I-85 and I-40 run concurrently to the city of Greensboro. Greensboro includes one stretch of I-40 which is signed with no fewer than six different highway numbers.

From Greensboro, we take I-85 south and west towards Charlotte, the state’s largest city. Charlotte has become a major banking center, most notably it is home to “way too big to fail” Bank of America. It has prospered and underwent a major construction boom with a large jumble of post-modern skyscrapers.

[By Riction (Own work) [CC-BY-SA-3.0 or GFDL], via Wikimedia Commons]
The Bank of America headquarters in Charlotte is the “tallest building between Philadelphia and Atlanta.” It is the one with the green lights on top in the photograph above. This sculpture, Arnaldo Pomodoro’s Il Grande Disco sits on Bank of America Plaza. It is known locally as “The Disco Wheel.”

[Photo by Antonio Viva on flickr. (CC BY-NC-SA 2.0)]
Bank of America is having its shareholder’s meeting this week, and a large protest is expected tomorrow to coincide with the meeting, presumably converging at this very plaza.
We return to Greensboro and head west on I-40. The development becomes sparser and the landscape more hilly and scenic as we approach the Blue Ridge Mountains. And more treacherous as well. We turn onto I-240 to the town of Asheville.

While I have not yet been to Asheville myself, it sounds a little bit like the resort towns here in northern California, with music, arts, and old-style downtown turned upscale, and new-age types. But for me it is most notable as the home of the late Bob Moog, the great synthesizer pioneer and of our heroes at CatSynth. Asheville continues to be the home of Moog Music, Inc, which makes both hardware synthesizers and one of my favorite musical iPad apps, Animoog. The independent but related Bob Moog Foundation is building a museum and cultural space in Asheville, and they are involved in education outreach and teaching students the science and art of electronic music with programs, with specific efforts in western North Carolina.
We conclude by turning north onto I-26, a relatively new and quite spectacular highway through the mountainous border region between North Carolina and Tennessee. The highway, which opened in its current Interstate form in 2003, winds it’s way through mountain passes, alongside cliffs, and even through a tunnel. This video gives a sense of what it is like, even though it is traveling in the opposite direction, from Tennessee back to North Carolina.


Another thing that makes talking about New York different from talking about other cities in this series is that there aren’t many highways to talk about, especially in Manhattan. New Yorkers take the subway. But there are still highways even in some of the denser areas of the city. The FDR Drive along the eastern edge of Manhattan is narrow and winding but offers good views of the East River and the changing skyline of the city as it passes underneath the bridges.
On the Brooklyn and Queens side, there is the Brooklyn-Queens Expressway, (I-278, the BQE). It zig-zags through some of the densest areas of Brooklyn on a narrow double-decker path among tall buildings. With the contemporary focus on Brooklyn, the highway has also taken on a significant identity for those who live and work there. There are even multiple art and music pieces dedicated to it, such as this 




The Bronx is bisected by Interstate 87, the Major Deegan Expressway, which travels with length of the borough south to north, passing by Yankee Stadium. As it crosses the city boundary into Westchester County, I-87 becomes the New York State Thruway. The Thruway cuts through the southern part of the county before meeting I-287 and crossing the Hudson River on the Tappan Zee Bridge.




This is the Hudson River Valley, known for its scenery and for inspiring the “Hudson River School”. The paintings may look rather trite and dated now, but the scenery that inspired them is still quite spectacular. One of the more dramatic points along the river is the Bear Mountain Bridge, which carries US 6 and US 202 from Westchester on the east side to Orange County and Bear Mountain State Park on the west side, spanning large hills on either side. It also connects up NY 9D on the east and US 9W and the Palisades Interstate Parkway on the west.
On the west side of the Hudson, one can continue north on the Thruway to Albany, the state capital. However, on the east side, one could take the scenic Taconic Parkway. It begins in suburban Westchester County just north of the city and not far from where I grew up, and then continues north through picturesque rural landscape for the remainder of its route. It is in fact the second-longest continuous road listed in the National Register of Historic Places after Virginia’s Skyline drive.


The Empire State Plaza, conceived and built by then-Governor Nelson Rockefeller, is a huge government-building complex built and arranged in the futuristic international style of the 1960s, a bit like Brasilia. As a result, I am quite fond of it. Nearby along US 20 is the State Capitol building, which is quite different from most others. It is not the Classical style with columns and a large dome or rotunda, but instead looks more like a rich family mansion that one might find in New York in the 19th century. It is a mixture of Roman, Renaissance and Victorian styles all put together.
From Albany, one can continue on I-87 north towards the Canadian border. Along the way, the highway passes through the Adirondack Mountains. In the northern part of the Adirondacks, one can leave the interstate for smaller roads like Highway 86 through the mountains to Lake Placid of Winter-Olympics fame, and nearby Whiteface Mountain.
Meanwhile, the Thruway continues west from Albany with I-90, through many of the other cities that dot western New York, such as Syracuse and Rochester, passing north of the Finger Lakes. The longest is Cayuga Lake. On the south end is the town of Ithaca, home of Cornell University whose campus is on a hillside overlooking the lake, and whose official school song references the lake. Near the northern end of the lake is Seneca Falls, a famous location in the history of women’s rights in the United States. From Seneca Falls, we can also follow the Erie Canal westward. The canal, which was an important transportation route in the nineteenth century, runs largely parallel to the present-day Thruway. It is known for its complex series of locks, such as these at the appropriately named town of Lockport.
The Erie Canal and the Thruway continue westward to the city of Buffalo. We leave the main Thruway and continue on I-190 towards the downtown on the shore of Lake Erie. It is the second largest city in New York State, but I have yet to visit it. It’s location on the edge of the Great Lakes and its industrial past make it seem much closer to the cities of the midwest, such as Cleveland and Detroit, than to the rest of New York. Indeed, one of the city’s landmarks, Buffalo Central Terminal reminds me a bit of Michigan Central Station in Detroit: a once grand art-deco station that has been abandoned and fallen into disrepair.




In the eastern section of the capital, we encounter aptly named “Badger Interchange”, in which no fewer than three major interstates converge, I-90, I-94 and I-39. The interchange also includes state highway 30, a short freeway that connects to downtown Madison.
Highway 30 ends at US 151, which traverses the isthmus that holds downtown Madison and separates lakes Mendota and Monona. I don’t know of too many other cities concentrated on an isthmus like that. Certainly, the location between the two lakes makes for interesting views and architectural opportunities. Consider this view from Lake Monona featuring the State Capitol building book-ended symmetrically by large buildings and standing behind Frank Lloyd Wright’s Monona Terrace.
It of course did not take long for us to encounter a building by Frank Lloyd Wright, a native of Wisconsin. His summer home and studio, Taliesin, is in Spring Green, west of Madison. We take US 14 west from the capital through a green hilly landscape – it’s not hard to see why this might been inspiring for Wright’s prairie style architecture, with its use of horizontal lines and low angles that reflect the expanse of the landscape. 






I-94 continues towards downtown, passing through another large interchange, the Marquette Interchange with I-794, I-43, and US 41. It does look like a complicated tangle.







Wisconsin does not have much shoreline on Lake Superior compared to its neighbors – in particular, Michigan extends quite a bit westward along the south shore of the lake, but it does have the Apostle Islands National Lakeshore. We can get there from Michigan on US 2, passing along the edge of Chequamegon Bay before turning north onto WI 13 along the waters edge to the Apostle Islands. In addition to wildlife and great views of Lake Superior, the islands have unusual “sea caves”, such as these at the edge of Sand Island.




From the western side of the beltway, we begin on Interstate 66 and US 50 heading east from Virginia over the Potomac River. I-66 turns north while US 50 continues eastward as Constitution Avenue, passing alongside the National Mall and all the national memorials and monuments, which are arranged around the mall and the parkland along the Tidal Basin.

The Capitol is surrounded by several blocks of grounds, including the Capitol Reflecting Pool. While wandering around these grounds on foot, one would probably not suspect that there was a major highway passing underneath. I-395 traverses the center of the city in the long Third Street Tunnel, connecting to US 50 (New York Avenue) in the northern sectors. The densely packed residential sections of the Capitol Hill neighborhood can be found to the east, and a lively urban neighborhood to the northwest around Logan Circle.

South of the Third Street Tunnel, I-395 continues towards Virginia and a junction with the Beltway at the Springfield Interchange (aka, the Mixing Bowl). Before crossing the Potomac, it intersects with I-695, a short connector to the Anacosta Freeway in the southeast section of the city. It is signed as I-295 and also as DC 295. It is the only signed DC highway that currently exists, but it is another thing that gives the District of Columbia the trappings of a state, except of course that it isn’t a state and doesn’t have voting representatives in Congress. Hence another state-like item, the district’s license place, continues to bear the Revolutionary War slogan “Taxation without Representation”.
…where it continues as Maryland Route 295, the Baltimore-Washington Parkway. The parkway is partly maintained by the National Park Service. In this segment, it is a wide road through wooded surroundings, although industrial and suburban areas are never far away. Further north, it becomes an expressway through the suburbs south of Baltimore as it heads towards that city. The parkway ends at a I-95. Nearby, a larger and impressive junction over water takes the short I-395 (completely unrelated to the one we just left in Washington, DC.) until downtown Baltimore, passing by Camden Yards and just to the west of the Inner Harbor.




We head south from Baltimore towards the Chesapeake Bay on I-97, where has the distinction of being the shorted two-digit interstate. It passes through hills and suburban towns to US 50 near Annapolis, the state capital. I remember visiting Annapolis in 1999 and 2000. The 1999 visit included walking around the historic district and into the statehouse, one of the oldest in the country with a distinctly colonial look about it, and watching July 4 fireworks on the bay. It was also during an intense heatwave, with some days over 100F. I didn’t mind the heat too much, and it made it great weather for swimming. The towns and cities along the bay, including Annapolis, seemed intimately connected to the water.

Back in Baltimore, we return to the western neighborhoods, not far from the rowhouses we explored earlier, and head west on US 40. Just past Gwynns Falls / Leakin Park, we come to a parking lot that is the eastern terminus of Interstate 70. It was originally planned to go further through the city, but that extension was ultimately cancelled. In this case, we take I-70 westward out of the city.
This part of the state is quite sparse west of the Baltimore metropolitan area is quite rural and sparse, and in some ways would seem to be a separate state, more in common with West Virginia. I-70 and US 40 run together or nearby for much of the region. As I-70 heads northwest into Pennsylvania, I-68 continues with US 40 west through the Appalachian Mountains, including this cut through Sideling Hill.
We start in New Orleans, which I visited in November of 2006, during the recovery from Hurricane Katrina. Coming in from the airport on I-10 we approached the downtown. The highway comes close to the Superdome and the downtown buildings. A large interchange connects to Business US 90, which heads over the Mississippi River via the Crescent City Connection. It was good introduction.
I did set aside some time to see what had become of the Lower Ninth Ward. In a rented car, I headed east on Claiborne Avenue (LA Highway 39) and crossed over the canal into the district.







The river, too, is quite wide an impressive as it passes by the Crescent City – the nickname in fact comes from the bend in river as it passes by the city. We cross the river on the Crescent City Connection to the “west bank”, which is actually south here. We continue on US 90 Business and turn south onto LA 23 towards the town of Belle Chase. LA 23 crosses the Gulf Intercoastal Waterway via an old bridge and tunnel pair, and then hugs the west bank of the Mississippi to the mouth of the river.

New Orleans continues to function as the hub for this particular virtual exploration. We next head west on I-10 and turn south onto I-310, which crosses the Mississippi on the cable-styled Hale Boggs Bridge.
We then head north (back on the east bank of the Mississipp) via US 61 to the town of Laplace. I was disappointed to find out this was not named for the Laplace transform in mathematics and signal processing, but on the plus side it is known as the “andouille capital of the world”. And we would be remiss if we did not stop here to sample the famous and tasty sausage.


We then cross the Mississippi again and turn south on Louisiana State Highway 1. At first, it follows the west bank of the river, but then heads southward, beginning a long parallel with LA 308 on opposite banks of Bayou Lafourche. We pass the town of Belle Rose, which I had written about 

South of Thibodaux, we turn west on US 90. The is a major highway and being upgraded to interstate standards, passing by the Bayou Teche National Wildlife Refuge as well as several towns. We turn south onto LA 329 to Avery Island. This actually is not an island at all, but it is a salt mound that rises in an oddly circular fashion from the flat landscape. It is most known for being the home of Tabasco hot sauce. We at CatSynth are of course fans of all things hot and spicy, and so visiting this factory and a tasting session would be in order.


We then come to the city of Lafayette, where we cross I-10 and continue northward on I-49. The area along the highway was part of an ancient flow of the Mississippi that apparently was wider and further west than it is today. Heading northward, the wet environment of southern Louisiana gives way to a drier landscape. Via LA 1 we come to city of Natchitoches, which has the feel of an older historic town.
We continue north on I-49 to its end at I-20 near Shreveport, the third-largest city in the state. The bypass highway I-220 spans nearby Cross Lake on a graceful modern bridge. The view from below with the arches is an interesting optical effect.




If we take I-290 west from this geometric oddity of an interchange, we come to the suburb of Oak Park. It was here that Frank Lloyd Wright began his storied architectural career. His home and studio in the town is a landmark, and there are numerous early examples of his prairie-style houses. Looking at his home and studio, one can see the elements that would be later refined in prairie style.

Continuing south on I-57, we pass by our friend I-80 in the southern suburbs of Chicago and eventually come to Champaign and Urbana after crossing I-74 – it does seem that Illinois has a lot of interstate highways. This cities are home to the University of Illinois at Urbana Champaign, the flagship campus of the University of Illinois. It hosts the NCSA (The National Center for Supercomputing Applications) that created the first graphical web browser Mosaic.
Before we overdose on computer history, we exit Champaign-Urbana on I-72 heading westward. (Did we mention that Illinois has a lot of interstate highways?). This view along the highway suggests just how flat the landscape is in this region, with the road completely straight.


We head south from Springfield on I-55, on another incredibly straight stretch of highway through very flat landscape. For those who have lived among hills our entire lives, these flat plains are a novel experience. It’s not only the land, but also the sky.
There is a significant break in the flat landscape of western Illinois along the Illinois River. Illinois Route 100 runs along the the west bank of the river amidst trees and bluffs. It then crosses a bridge and continues along the east side until the Illinois River meets the Mississippi River.
The Great River Road continues past the end of IL-100 and into the greater St. Louis metropolitan area. As the landscape along the river becomes more suburban and then urban in St. Clair county, the road bounces around many other designations, including I-70 in East St. Louis. From here we can continue across the Mississippi to St. Louis itself, or continue southward on the Great River Road as IL-3.
We opt for the latter, passing through towns with Egyptian sounding names until we come to Cairo, at the southern tip of the state, where the Ohio and Mississippi rivers meet. We meet I-57 again and then continue into the town itself on US 51. Cairo (pronounced KAY-RO) was once a significant center of trade along the rivers. But it has been in a long decline, and now has a population of about 2,800. Indeed, some views of the town make it look nearly abandoned.



At the eastern edge of Old San Juan, two of the streets merge for the start of PR 25, the Avenida Juan Ponce de Leon, which continues east past the Capitol building of Puerto Rico. PR 25 and PR 1 leave the island of San Juan via a pair of causeways to the main island, where PR 1 becomes a major freeway. As it curves around the central city, we observe a very different kind of architecture. The modernist curving Puerto Rico Convention Center has won numerous awards.

We exit the city east on PR 26, which becomes PR 66 in the city of Carolina. And after the freeway ends we continue on PR 3. Eventually we turn south onto PR 191, which is the goal of this side trip from San Juan. This small highway winds its way upward into the El Yunque Rainforest. It is the only true tropical rainforest in the U.S. National Forest System




Back in San Juan, we head southward through the center of the island on PR 52. This is a busy toll expressway, but outside the cities it stretches across hilly countryside in the interior of the island. As we approach the southern coast, we can stop at one of Puerto Rico’s few highway rest stops and see both human-made and natural landmarks, the Monumento al Jíbaro Puertorriqueño and Las Tetas De Cayey.


With on in mind, we continue west from Ponce on PR 2 – this is the same PR 2 we encountered in San Juan, as it traces the coast on the western half of the island – and stop at the ruins of the CORCO refinery.
It’s a no-brainer that a tropical island like Puerto Rico would have beaches. But the southwest corner of the island apparently has some of the most scenic and less populated beaches – which is what I would prefer if I was there. We exit PR 2 onto PR 116 past the town of Guánica, where we come to Las Paldas and La Jungla beaches. We conclude with this video of quiet beaches on Guánica Bay.






















Looking towards the lake from this bridge, one sees how closely packed the crossings are, and the diversity of shape, height, function, and level of disuse. In the picture below, we see the blue bridge carrying a major freeway, State Highway 2, beyond that a rail bridge, and in the front the ruins of the older Detroit Avenue viaduct.



We depart Cleveland continuing on I-90, and then switch onto I-71 to journey diagonally across the length and breadth of the state. It winds through the suburbs, crossing many other highways before intersecting our friend I-80, which runs across the state as the Ohio Turnpike. The Ohio Turnpike is familiar from numerous cross-country trips, with the rolling hills and suburbs giving way to a much straighter road over flat terrain and farmland as one heads west. But in this instance, we continue south on I-71 towards Columbus, the state’s capital and largest city.








We begin in the Northeast Kingdom of Vermont along State Highway 114. It winds its way from the most remote northeastern corner of the state and The Kingdom State Forest eventually into the towns and lakes of the region.
We can follow VT 16 back to Interstate 91, the main highway in and out of the “The Kingdom”. Heading south on I-91, the terrain looks a lot like eastern New York, hilly and forested. We turn off the highway onto US 2 and head west to Montpelier, the state capital. It has the distinction of being the smallest state capital in the U.S.
It is in Montpelier that we turn onto Interstate 89, which crosses the state diagonally from New Hampshire in the southeast to the Canadian border in the northwest. Along the way it connects the capital to the largest city, Burlington. Although I-89 never enters the city, it is easy to connect to the downtown via US 2.





Back on I-64, we can head west onto Interstate 81 which runs along much of the Appalachian Mountains. It passes through hills, valleys and towns along the way, and is indeed a major corridor for the interior eastern US, connecting the northeast with the south. As such, it connects to our next state.
We continue on I-81 into Tennessee, where it ends at I-40. Here we leave the interstate and head south first on TN 66 and then US 441 to the Great Smoky Mountain National Park. It has the distinction of being the most visited national park in the U.S. It offers great views of the southern Appalachian mountains, both scenic vistas of the mountains and details such as streams and waterfalls.




Indeed, I-40 is named the “Isaac Hays Memorial Highway” on its eastern approach to Memphis. Long before he was Chef on South Park, Isaac Hays was a leading figure in Memphis Soul on Stax. I-40 and I-240 together form a beltway around this city’s outer neighborhoods, but its downtown and many of its most famous landmarks lie further west, between I-240/I-69 and the Mississippi River. Just off this highway south of downtown is the Stax Museum on McLemore Avenue. Further north on off I-240/I-69 is large exit for Union Ave, which carries several number designations all at once (US 51/64/70/79). Union Avenue was once home to Sun Records which produced many of the earlier Rock-and-Roll artists of the 1950s. Union Avenue also provides access to Beale Street.
