Baseline Road is a major east-west street in
Boulder, Colorado
Boulder is a home rule city that is the county seat and most populous municipality of Boulder County, Colorado, United States. The city population was 108,250 at the 2020 United States census, making it the 12th most populous city in Color ...
that extends east of the city through parts of four counties. The western terminus of Baseline Road is at Flagstaff Mountain in the
City of Boulder Mountain Parks. The eastern terminus is at 16800 Watkins Road, about east of
Lochbuie on the boundary between
Adams and
Weld Counties. The total length of Baseline Road is approximately , all of which is within the
Denver-Aurora-Boulder Combined Statistical Area in
Colorado
Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the ...
. Baseline Road runs almost exactly along the 40th line of
latitude
In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north ...
.
Origin of the name
On May 30, 1854, the
Kansas-Nebraska Act created the
Kansas Territory
The Territory of Kansas was an organized incorporated territory of the United States that existed from May 30, 1854, until January 29, 1861, when the eastern portion of the territory was admitted to the Union as the free state of Kansas.
T ...
and the
Nebraska Territory
The Territory of Nebraska was an organized incorporated territory of the United States that existed from May 30, 1854, until March 1, 1867, when the final extent of the territory was admitted to the Union as the State of Nebraska. The Nebraska ...
, divided by the
40th parallel north
The 40th parallel north is a circle of latitude that is 40 degrees north of the Earth's equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.
At this latitude the sun is v ...
. The
Pike's Peak Gold Rush
The Pike's Peak Gold Rush (later known as the Colorado Gold Rush) was the boom in gold prospecting and mining in the Pike's Peak Country of western Kansas Territory and southwestern Nebraska Territory of the United States that began in July 1858 a ...
of 1858-1861 lured thousands of gold seekers into the goldfields of the northwestern Kansas Territory and the southwestern Nebraska Territory. On February 28, 1861, the western portion of the Kansas Territory and the southwestern portion of the Nebraska Territory were incorporated into the new
Colorado Territory
The Territory of Colorado was an organized incorporated territory of the United States that existed from February 28, 1861, until August 1, 1876, when it was admitted to the Union as the State of Colorado.
The territory was organized in the ...
. The 40th parallel became the primary
baseline for
surveying
Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial two-dimensional or three-dimensional positions of points and the distances and angles between them. A land surveying professional is ...
the land in the eastern portion of the new territory, and a road was eventually cut along the survey baseline.
Official names for the road
The road along the 40th parallel is officially named Baseline Road in
Boulder County and the
City and County of Broomfield, 168th Avenue in
Adams County, and County Line Road or Weld County Road 2 in
Weld County.
A stretch of Baseline Road, from
US 287
U.S. Route 287 (US 287) is a north–south (physically northwest–southeast) United States highway. At long, it is the second longest three-digit U.S. Route, behind US 281. It serves as the major truck route between Fort Worth and Ama ...
in
Lafayette
Lafayette or La Fayette may refer to:
People
* Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette
* House of La Fayette, a French noble family
** Gilbert du Motier, Marquis de Lafayette (1757� ...
to
I-25
Interstate 25 (I-25) is a major Interstate Highway in the western United States. It is primarily a north–south highway, serving as the main route through New Mexico, Colorado, and Wyoming. I-25 stretches from I-10 at Las Cruces, New Mexic ...
in
Broomfield, is part of
State Highway 7.
Description
Baseline Road descends from Flagstaff Mountain (site of the 1935
CCC Sunrise Amphitheatre) and runs through the city of
Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In c ...
for its first four miles (6 km). Within Boulder, it passes the
Colorado Chautauqua, a
National Historic Landmark
A National Historic Landmark (NHL) is a building, district, object, site, or structure that is officially recognized by the United States government for its outstanding historical significance. Only some 2,500 (~3%) of over 90,000 places listed ...
, near 9th Street; crosses
State Highway 93 (Broadway); then passes the
University of Colorado Law School
The University of Colorado Law School is one of the professional graduate schools within the University of Colorado System. It is a public law school, with more than 500 students attending and working toward a Juris Doctor or Master of Laws, Mast ...
just east of Broadway. The road then crosses
US 36
U.S. Route 36 (US 36) is an east–west United States highway that travels approximately from Rocky Mountain National Park, Colorado to Uhrichsville, Ohio. The highway's western terminus is at Deer Ridge Junction, an intersection i ...
(28th Street), passes the Williams Village dormitory towers of the University of Colorado, and crosses
State Highway 157 (Foothills Parkway). East of 55th Street, the road seems to terminate at Cherryvale Road. It actually continues, shifted slightly to the north, following a small northbound stretch of Cherryvale. Thereafter, the road leaves the city of
Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In c ...
and takes on a more rural character until approaching
State Highway 42 (95th Street). At that point the more urban surroundings of
Lafayette
Lafayette or La Fayette may refer to:
People
* Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette
* House of La Fayette, a French noble family
** Gilbert du Motier, Marquis de Lafayette (1757� ...
are evident, and the next two miles (3 km) run through the heart of Lafayette, including the road junction with
US 287
U.S. Route 287 (US 287) is a north–south (physically northwest–southeast) United States highway. At long, it is the second longest three-digit U.S. Route, behind US 281. It serves as the major truck route between Fort Worth and Ama ...
(N. 107th St.).
About one mile (1.6 km) beyond the eastern city limits of
Lafayette
Lafayette or La Fayette may refer to:
People
* Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette
* House of La Fayette, a French noble family
** Gilbert du Motier, Marquis de Lafayette (1757� ...
, the road crosses the eastern boundary of
Boulder County and passes the
Erie Municipal Airport. For two miles (3 km) beyond this point, Baseline Road forms the boundary between
Weld County and the
City and County of Broomfield. For the next two miles (3 km), from Sheridan Parkway to the interchange with
I-25
Interstate 25 (I-25) is a major Interstate Highway in the western United States. It is primarily a north–south highway, serving as the main route through New Mexico, Colorado, and Wyoming. I-25 stretches from I-10 at Las Cruces, New Mexic ...
, the road passes through a rural northern portion of the
City and County of Broomfield.
Just east of
I-25
Interstate 25 (I-25) is a major Interstate Highway in the western United States. It is primarily a north–south highway, serving as the main route through New Mexico, Colorado, and Wyoming. I-25 stretches from I-10 at Las Cruces, New Mexic ...
, the road abuts a commercial area in the extreme northern part of the city of
Thornton. For the next mile, from this point to York Street, Baseline Road marks the boundary between
Adams County and the
City and County of Broomfield. From York Street east, the road forms the boundary between
Adams County and
Weld County for the remainder of its length.
East of York Street, about of rural road ensue, until
Brighton
Brighton () is a seaside resort and one of the two main areas of the City of Brighton and Hove in the county of East Sussex, England. It is located south of London.
Archaeological evidence of settlement in the area dates back to the Bronze A ...
is entered near
US 85
U.S. Route 85 (US 85) is a north–south United States Highway that travels in the Mountain and Northern Plains states of the United States. The southern terminus of the highway is at the Mexican border in El Paso, Texas, connecting w ...
. Baseline Road passes through the northern part of
Brighton
Brighton () is a seaside resort and one of the two main areas of the City of Brighton and Hove in the county of East Sussex, England. It is located south of London.
Archaeological evidence of settlement in the area dates back to the Bronze A ...
for about five miles (8 km), eventually reaching the town of
Lochbuie and the interchange with
I-76. Beyond
I-76 the road once again takes on a rural character and continues to its eastern terminus at 16800 Watkins Road.
Counties
*
Boulder County
*
City and County of Broomfield
*
Weld County (south boundary)
*
Adams County (north boundary)
Cities and towns
*
Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In c ...
*
Lafayette
Lafayette or La Fayette may refer to:
People
* Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette
* House of La Fayette, a French noble family
** Gilbert du Motier, Marquis de Lafayette (1757� ...
*
Erie
Erie (; ) is a city on the south shore of Lake Erie and the county seat of Erie County, Pennsylvania, United States. Erie is the fifth largest city in Pennsylvania and the largest city in Northwestern Pennsylvania with a population of 94,831 a ...
(south boundary)
*
Broomfield
*
Thornton
*
Brighton
Brighton () is a seaside resort and one of the two main areas of the City of Brighton and Hove in the county of East Sussex, England. It is located south of London.
Archaeological evidence of settlement in the area dates back to the Bronze A ...
*
Lochbuie (south boundary)
Highway junctions
*
State Highway 93 (Broadway) in
Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In c ...
*
US 36
U.S. Route 36 (US 36) is an east–west United States highway that travels approximately from Rocky Mountain National Park, Colorado to Uhrichsville, Ohio. The highway's western terminus is at Deer Ridge Junction, an intersection i ...
(28th Street) in
Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In c ...
*
State Highway 157 (Foothills Parkway) in
Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In c ...
*
State Highway 42 (95th Street) in
Lafayette
Lafayette or La Fayette may refer to:
People
* Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette
* House of La Fayette, a French noble family
** Gilbert du Motier, Marquis de Lafayette (1757� ...
*
US 287
U.S. Route 287 (US 287) is a north–south (physically northwest–southeast) United States highway. At long, it is the second longest three-digit U.S. Route, behind US 281. It serves as the major truck route between Fort Worth and Ama ...
(N. 107th St.) in
Lafayette
Lafayette or La Fayette may refer to:
People
* Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette
* House of La Fayette, a French noble family
** Gilbert du Motier, Marquis de Lafayette (1757� ...
*
State Highway 7 from
Lafayette
Lafayette or La Fayette may refer to:
People
* Lafayette (name), a list of people with the surname Lafayette or La Fayette or the given name Lafayette
* House of La Fayette, a French noble family
** Gilbert du Motier, Marquis de Lafayette (1757� ...
to
Broomfield (same roadway for 7 miles)
*
I-25
Interstate 25 (I-25) is a major Interstate Highway in the western United States. It is primarily a north–south highway, serving as the main route through New Mexico, Colorado, and Wyoming. I-25 stretches from I-10 at Las Cruces, New Mexic ...
in northern
Broomfield
*
US 85
U.S. Route 85 (US 85) is a north–south United States Highway that travels in the Mountain and Northern Plains states of the United States. The southern terminus of the highway is at the Mexican border in El Paso, Texas, connecting w ...
in
Brighton
Brighton () is a seaside resort and one of the two main areas of the City of Brighton and Hove in the county of East Sussex, England. It is located south of London.
Archaeological evidence of settlement in the area dates back to the Bronze A ...
*
I-76 in
Lochbuie
Termini
*Western terminus:
*Eastern terminus: {{Coord, 40, 00, 02, N, 104, 36, 11, W, format=dms, display=inline, type:landmark_region:US-CO
External links
pictures of The Colorado Chautauqua and Sunrise Amphitheatremap: western terminus, Flagstaff Mountainmap: Erie Municipal Airportmap: I-25 interchangemap: eastern terminus, 16800 Watkins Road
Streets in Colorado
Boulder, Colorado
Transportation in Boulder County, Colorado
Transportation in Broomfield County, Colorado
Transportation in Adams County, Colorado
Transportation in Weld County, Colorado